{"id":1326,"date":"2026-07-14T12:04:27","date_gmt":"2026-07-14T12:04:27","guid":{"rendered":"https:\/\/kurtfoundry.com\/?page_id=1326"},"modified":"2026-07-17T05:54:23","modified_gmt":"2026-07-17T05:54:23","slug":"grey-iron-castings","status":"publish","type":"page","link":"https:\/\/kurtfoundry.com\/fr\/capabilities\/grey-iron-castings\/","title":{"rendered":"Pi\u00e8ces moul\u00e9es en fonte grise"},"content":{"rendered":"\n<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n    <meta charset=\"UTF-8\">\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no\">\n    <script type=\"application\/ld+json\">\n    {\n      \"@context\": \"https:\/\/schema.org\",\n      \"@type\": \"Product\",\n      \"name\": \"Grey Iron Castings\",\n      \"description\": \"Custom grey iron sand castings manufactured to ASTM A48, DIN EN 1561, and ISO 185 standards. Fully CNC machined and CMM-inspected, shipped worldwide on DDP or FOB terms.\",\n      \"brand\": {\n        \"@type\": \"Brand\",\n        \"name\": \"Kurt Foundry\"\n      },\n      \"manufacturer\": {\n        \"@type\": \"Organization\",\n        \"name\": \"Kurt Foundry\"\n      },\n      \"offers\": {\n        \"@type\": \"AggregateOffer\",\n        \"priceCurrency\": \"USD\",\n        \"lowPrice\": \"1\",\n        \"highPrice\": \"10\",\n        \"offerCount\": \"2\",\n        \"priceValidUntil\": \"2027-12-31\",\n        \"availability\": \"https:\/\/schema.org\/InStock\",\n        \"url\": \"https:\/\/kurtfoundry.com\/capabilities\/custom-gray-iron-castings\/\"\n      },\n      \"aggregateRating\": {\n        \"@type\": \"AggregateRating\",\n        \"ratingValue\": \"5.0\",\n        \"reviewCount\": \"4\",\n        \"bestRating\": \"5\",\n        \"worstRating\": \"1\"\n      },\n      \"review\": [\n        { \"@type\": \"Review\", \"reviewRating\": {\"@type\":\"Rating\",\"ratingValue\":\"5\"}, \"author\": {\"@type\":\"Person\",\"name\":\"Buyer, Chicago, USA\"}, \"reviewBody\": \"Precise dimensions and excellent grey iron casting quality!\" },\n        { \"@type\": \"Review\", \"reviewRating\": {\"@type\":\"Rating\",\"ratingValue\":\"5\"}, \"author\": {\"@type\":\"Person\",\"name\":\"Buyer, Osaka, Japan\"}, \"reviewBody\": \"Perfect surface finish and extremely fast shipping. Highly recommended!\" },\n        { \"@type\": \"Review\", \"reviewRating\": {\"@type\":\"Rating\",\"ratingValue\":\"5\"}, \"author\": {\"@type\":\"Person\",\"name\":\"Buyer, Toronto, Canada\"}, \"reviewBody\": \"Outstanding vibration damping properties. Highly recommend Kurt Foundry.\" },\n        { \"@type\": \"Review\", \"reviewRating\": {\"@type\":\"Rating\",\"ratingValue\":\"5\"}, \"author\": {\"@type\":\"Person\",\"name\":\"Buyer, Milan, Italy\"}, \"reviewBody\": \"The grey iron casting structure is dense and entirely flawless.\" }\n      ]\n    }\n    <\/script>\n    <script type=\"application\/ld+json\">\n    {\n      \"@context\": \"https:\/\/schema.org\",\n      \"@type\": \"FAQPage\",\n      \"mainEntity\": [\n        {\n          \"@type\": \"Question\",\n          \"name\": \"Where is your foundry located?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"Our foundry is based in Weifang City, Shandong Province, China \u2014 one of the country's established centers for iron and steel casting. Casting, machining, and inspection all happen at this single site. We ship worldwide on DDP or FOB terms directly from our foundry, with export packing rated for ocean freight.\"\n          }\n        },\n        {\n          \"@type\": \"Question\",\n          \"name\": \"Is Grey Iron the same as Gray Iron?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"Yes \u2014 no metallurgical difference. \\\"Grey iron\\\" is the spelling used in ISO 185, EN 1561, and most markets outside North America. \\\"Gray iron\\\" is the ASTM and SAE spelling used in the United States and Canada. Kurt Foundry casts to both naming systems. Send us either an EN-GJL grade or an ASTM class and we will match the equivalent specification.\"\n          }\n        },\n        {\n          \"@type\": \"Question\",\n          \"name\": \"When should I specify Grey Iron instead of Ductile Iron?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"Grey iron is the better choice when vibration damping, thermal conductivity, and cost per kilogram are the primary concerns \u2014 machine bases, counterweights, motor housings, and pump casings are common examples. Ductile iron is the correct choice when the part must withstand impact loading or bending stress, or when elongation at break is a design requirement.\"\n          }\n        },\n        {\n          \"@type\": \"Question\",\n          \"name\": \"Why does Grey Iron machine so well?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"The graphite flakes embedded in the iron matrix act as a natural chip breaker and cutting lubricant during CNC operations. The result is faster cutting speeds, lower tool wear, and cleaner surface finishes compared to carbon steel or ductile iron.\"\n          }\n        },\n        {\n          \"@type\": \"Question\",\n          \"name\": \"What is the maximum casting weight you can produce?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"Our heavy resin sand casting lines handle single grey iron components from 50 lbs up to 5,000 lbs (approximately 2.5 metric tons) per piece. For parts outside that range, contact us directly for design modifications or split-casting approaches.\"\n          }\n        },\n        {\n          \"@type\": \"Question\",\n          \"name\": \"Can Grey Iron be welded?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"Welding grey iron is technically possible but carries significant risk of cracking during the heating and cooling cycle due to the material's high carbon content and low ductility. We recommend redesigning assemblies so components are bolted together or cast as a single piece where possible.\"\n          }\n        },\n        {\n          \"@type\": \"Question\",\n          \"name\": \"Do you supply fully machined, ready-to-assemble parts?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"Yes. Kurt Foundry provides fully integrated production \u2014 casting, CNC machining, and inspection under one roof. Parts are delivered ready for assembly, quoted as a single turnkey price.\"\n          }\n        }\n      ]\n    }\n    <\/script>\n    <style>\n        @import url('https:\/\/fonts.googleapis.com\/css2?family=Playfair+Display:wght@400;500;600;700&family=Open+Sans:wght@300;400;600&display=swap');\n        .kf-grey-iron {\n            --primary-dark: #0a0e0d; \n            --primary: #2b3a36; \n            --primary-light: #445851;\n            --accent: #d4af37; \n            --bg-light: #f9f8f4;\n            --bg-white: #ffffff;\n            --bg-grey: #f0efe9;\n            --text-main: #333333;\n            --text-muted: #666666;\n            --text-light: #e0e0e0;\n            --border: #e2dfd5;\n            --transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);\n        }\n        .kf-grey-iron, .kf-grey-iron * { margin: 0; padding: 0; box-sizing: border-box; }\n        .kf-grey-iron { scroll-behavior: smooth; }\n        .kf-grey-iron { font-family: 'Open Sans', sans-serif; background-color: var(--bg-light); 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line-height: 1; display: block; }\n        .kf-grey-iron .logo-sub { font-size: 0.85rem; text-transform: capitalize; letter-spacing: 1px; color: var(--text-muted); margin-top: 4px; display: block; font-family: 'Open Sans', sans-serif; }\n        \n        .kf-grey-iron .hamburger { display: none; cursor: pointer; flex-direction: column; gap: 5px; z-index: 10000; }\n        .kf-grey-iron .hamburger span { width: 25px; height: 3px; background-color: var(--primary-dark); transition: all 0.3s; border-radius: 2px;}\n        \n        .kf-grey-iron nav ul { display: flex; gap: 2rem; list-style: none; align-items: center; margin: 0; padding: 0; }\n        .kf-grey-iron nav a, .kf-grey-iron .nav-dropdown-trigger { font-family: 'Playfair Display', serif; font-size: 1.15rem; text-transform: capitalize; letter-spacing: 0.5px; font-weight: 500; color: var(--primary-dark); position: relative; padding-bottom: 5px; cursor: pointer; display: inline-block; }\n        .kf-grey-iron nav > ul > li > a::after, .kf-grey-iron .nav-dropdown-trigger::after { content: ''; position: absolute; left: 0; bottom: 0; width: 0; height: 2px; background: var(--primary); transition: var(--transition); }\n        .kf-grey-iron nav > ul > li > a:hover::after, .kf-grey-iron .dropdown:hover .nav-dropdown-trigger::after { width: 100%; }\n        \n        .kf-grey-iron .dropdown { position: relative; }\n        .kf-grey-iron .dropdown-menu { display: block; position: absolute; top: 100%; left: -15px; background: var(--bg-white); box-shadow: 0 15px 35px rgba(0,0,0,0.08); min-width: 280px; border-top: 3px solid var(--primary); opacity: 0; visibility: hidden; transform: translateY(15px); transition: all 0.3s cubic-bezier(0.25, 1, 0.5, 1); padding: 1rem 0; z-index: 1000; border-radius: 0 0 4px 4px; }\n        .kf-grey-iron .dropdown:hover .dropdown-menu { opacity: 1; visibility: visible; transform: translateY(0); }\n        .kf-grey-iron .dropdown-menu li { display: block; margin: 0; width: 100%; }\n        .kf-grey-iron .dropdown-menu a { display: block; padding: 0.7rem 1.5rem; font-size: 1.05rem; font-weight: 500; border-bottom: none; color: var(--text-main); transition: var(--transition); width: 100%; white-space: nowrap; }\n        .kf-grey-iron .dropdown-menu a::after { display: none; } \n        .kf-grey-iron .dropdown-menu a:hover { background: var(--bg-grey); color: var(--primary-dark); padding-left: 2rem; }\n        .kf-grey-iron .nav-cta { padding: 0.6rem 1.2rem; background: var(--primary); color: var(--bg-white) !important; border-radius: 2px; font-family: 'Open Sans', sans-serif !important; font-size: 0.9rem !important; text-transform: uppercase !important; letter-spacing: 1px !important;}\n        .kf-grey-iron .nav-cta:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 5px 15px rgba(0,0,0,0.1); }\n        .kf-grey-iron .nav-cta::after { display: none !important; }\n        .kf-grey-iron section { padding: 7rem 5%; width: 100%; overflow: hidden; }\n        .kf-grey-iron .container { max-width: 1400px; margin: 0 auto; width: 100%; }\n        .kf-grey-iron .section-header { text-align: center; margin-bottom: 4rem; width: 100%; }\n        .kf-grey-iron .section-header h2 { font-size: 2.8rem; margin-bottom: 1rem; line-height: 1.2; }\n        .kf-grey-iron .section-header p { font-size: 1.05rem; color: var(--text-muted); max-width: 800px; margin: 0 auto; }\n        .kf-grey-iron .subtitle { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 3px; color: var(--primary-light); font-weight: 600; display: block; margin-bottom: 0.8rem; }\n        .kf-grey-iron .inner-hero { position: relative; min-height: 60vh; display: flex; align-items: center; justify-content: center; text-align: center; padding-top: 8rem; background-color: var(--primary-dark); overflow: hidden; }\n        \n        .kf-grey-iron .inner-hero-bg { position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover; z-index: 1; opacity: 0.7; filter: brightness(0.7); }\n        \n        .kf-grey-iron .inner-hero-content { position: relative; z-index: 3; max-width: 900px; opacity: 0; transform: translateY(30px); animation: fadeInHero 1s ease-out 0.2s forwards; padding: 0 1rem; }\n        @keyframes fadeInHero { to { opacity: 1; transform: translateY(0); } }\n        .kf-grey-iron .inner-hero h1 { color: var(--bg-white); font-size: 4rem; line-height: 1.1; margin-bottom: 1.2rem; }\n        .kf-grey-iron .inner-hero p { font-size: 1.15rem; font-weight: 300; color: var(--text-light); margin-bottom: 2rem; }\n        .kf-grey-iron .text-content-section { background: var(--bg-white); }\n        .kf-grey-iron .text-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }\n        .kf-grey-iron .text-grid p { margin-bottom: 1.2rem; font-size: 1.05rem; color: var(--text-muted); }\n        .kf-grey-iron .short-para { margin-bottom: 1rem; font-size: 1.05rem; color: var(--text-muted); line-height: 1.75; }\n        .kf-grey-iron .short-para:last-of-type { margin-bottom: 0; }\n        \n        .kf-grey-iron .video-wrapper { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; border-radius: 2px; box-shadow: 0 15px 35px rgba(0,0,0,0.08); background: #222; }\n        .kf-grey-iron .video-wrapper iframe, .kf-grey-iron .video-wrapper img { position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover; }\n        .kf-grey-iron .grades-section { background: var(--bg-grey); }\n        .kf-grey-iron .table-responsive { width: 100%; overflow-x: auto; margin-top: 2rem; background: var(--bg-white); border: 1px solid var(--border); box-shadow: 0 10px 30px rgba(0,0,0,0.03); }\n        .kf-grey-iron table { width: 100%; border-collapse: collapse; text-align: left; }\n        .kf-grey-iron th, .kf-grey-iron td { padding: 1.2rem 1.5rem; border-bottom: 1px solid var(--border); }\n        .kf-grey-iron th { background-color: var(--primary-dark); color: var(--bg-white); font-weight: 600; font-family: 'Playfair Display', serif; font-size: 1.1rem; letter-spacing: 0.5px; }\n        .kf-grey-iron tr:last-child td { border-bottom: none; }\n        .kf-grey-iron tr:hover td { background-color: var(--bg-light); }\n        .kf-grey-iron .grade-name { font-weight: 600; color: var(--primary); }\n        .kf-grey-iron .standards-note { margin-top: 2rem; padding: 1.5rem 1.8rem; background: var(--bg-white); border-left: 3px solid var(--primary); font-size: 0.98rem; color: var(--text-muted); }\n        .kf-grey-iron .standards-note strong { color: var(--primary-dark); }\n        .kf-grey-iron .process { background: linear-gradient(135deg, #182220 0%, #2b3a36 100%); color: var(--bg-white); }\n        .kf-grey-iron .process h2, .kf-grey-iron .process .subtitle { color: var(--bg-white); }\n        .kf-grey-iron .process .subtitle { color: var(--accent); }\n        .kf-grey-iron .media-placeholder {\n            display: flex; flex-direction: column; align-items: center; justify-content: center;\n            text-align: center; padding: 1.2rem;\n        }\n        .kf-grey-iron .ph-icon { font-size: 1.8rem; margin-bottom: 0.5rem; opacity: 0.6; }\n        .kf-grey-iron .ph-label { font-size: 0.8rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }\n        .kf-grey-iron .process-timeline { position: relative; margin-top: 4rem; }\n        .kf-grey-iron .timeline-track { display: flex; flex-direction: column; max-width: 980px; margin: 0 auto; position: relative; }\n        .kf-grey-iron .timeline-track::before {\n            content: ''; position: absolute; top: 30px; bottom: 30px; left: 27px; width: 2px; z-index: 1;\n            background: linear-gradient(180deg, rgba(212,175,55,0.15), rgba(212,175,55,0.55) 8%, rgba(212,175,55,0.55) 92%, rgba(212,175,55,0.15));\n        }\n        .kf-grey-iron .timeline-step {\n            position: relative; z-index: 2; display: flex; align-items: flex-start; gap: 1.8rem;\n            padding: 1.8rem 1.6rem 1.8rem 0; border-radius: 8px;\n            transition: background-color 0.5s ease;\n        }\n        .kf-grey-iron .timeline-step.passed, .kf-grey-iron .timeline-step.active { background-color: rgba(212,175,55,0.07); }\n        .kf-grey-iron .timeline-dot {\n            width: 54px; height: 54px; border-radius: 50%; flex-shrink: 0;\n            background: #1b2621; border: 3px solid rgba(212,175,55,0.55); color: rgba(212,175,55,0.7);\n            display: flex; align-items: center; justify-content: center;\n            font-family: 'Playfair Display', serif; font-weight: 700; font-size: 1.3rem;\n            transition: all 0.5s ease;\n        }\n        .kf-grey-iron .timeline-step.passed .timeline-dot, .kf-grey-iron .timeline-step.active .timeline-dot {\n            background: var(--accent); border-color: var(--accent); color: var(--primary-dark);\n        }\n        .kf-grey-iron .timeline-step.active .timeline-dot {\n            transform: scale(1.1); box-shadow: 0 0 0 8px rgba(212,175,55,0.15);\n        }\n        .kf-grey-iron .timeline-content { flex: 1; display: flex; gap: 1.5rem; align-items: center; flex-wrap: wrap; min-width: 0; }\n        .kf-grey-iron .timeline-media {\n            width: 400px; flex-shrink: 0; aspect-ratio: 3 \/ 2; border-radius: 8px; overflow: hidden;\n            opacity: 0.5; filter: grayscale(0.4); transition: all 0.5s ease;\n        }\n        .kf-grey-iron .timeline-step.passed .timeline-media, .kf-grey-iron .timeline-step.active .timeline-media { opacity: 1; filter: grayscale(0); }\n        .kf-grey-iron .timeline-step.active .timeline-media { transform: scale(1.02); }\n        .kf-grey-iron .timeline-media .media-placeholder {\n            width: 100%; height: 100%; border: none; border-radius: 8px;\n            background: repeating-linear-gradient(135deg, #24322c 0px, #24322c 10px, #1c2822 10px, #1c2822 20px);\n            color: rgba(255,255,255,0.55);\n        }\n        .kf-grey-iron .timeline-media .ph-icon { font-size: 2rem; margin-bottom: 0.5rem; opacity: 0.7; }\n        .kf-grey-iron .timeline-media .ph-label { font-size: 0.72rem; color: var(--accent); font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; padding: 0 0.5rem; text-align: center; }\n        .kf-grey-iron .timeline-media .ph-spec { font-size: 0.62rem; color: rgba(255,255,255,0.35); margin-top: 0.3rem; }\n        .kf-grey-iron .timeline-text { flex: 1; min-width: 200px; }\n        .kf-grey-iron .timeline-step h3 {\n            color: var(--bg-white); font-size: 1.12rem; margin-bottom: 0.5rem;\n            font-family: 'Open Sans', sans-serif; font-weight: 600; opacity: 0.55; transition: opacity 0.5s ease, color 0.5s ease;\n        }\n        .kf-grey-iron .timeline-step.passed h3, .kf-grey-iron .timeline-step.active h3 { opacity: 1; color: var(--accent); }\n        .kf-grey-iron .timeline-step p { color: var(--text-light); font-size: 0.9rem; line-height: 1.6; opacity: 0.45; transition: opacity 0.5s ease; }\n        .kf-grey-iron .timeline-step.passed p, .kf-grey-iron .timeline-step.active p { opacity: 0.95; }\n        .kf-grey-iron .cta-strip { background: var(--primary-dark); padding: 3.5rem 5%; text-align: center; }\n        .kf-grey-iron .cta-strip h3 { color: var(--bg-white); font-size: 1.6rem; margin-bottom: 0.8rem; }\n        .kf-grey-iron .cta-strip p { color: var(--text-light); margin-bottom: 1.6rem; font-size: 0.98rem; }\n        .kf-grey-iron .cta-strip .btn { border-color: var(--accent); color: var(--accent); }\n        .kf-grey-iron .cta-strip .btn:hover { background: var(--accent); color: var(--primary-dark); }\n        .kf-grey-iron \/* ---- PRICING ---- *\/\n        .pricing-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem; margin-top: 2.5rem; }\n        .kf-grey-iron .price-card { background: var(--bg-white); border: 1px solid var(--border); padding: 2.2rem; }\n        .kf-grey-iron .price-card h3 { font-size: 1.2rem; margin-bottom: 0.5rem; }\n        .kf-grey-iron .price-tag { font-family: 'Playfair Display', serif; font-size: 1.9rem; color: var(--primary); margin-bottom: 0.8rem; }\n        .kf-grey-iron .price-card p { color: var(--text-muted); font-size: 0.95rem; }\n        .kf-grey-iron \/* ---- TESTIMONIALS ---- *\/\n        .testimonial-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.6rem; margin-top: 2.5rem; align-items: start; }\n        .kf-grey-iron .testimonial-card { background: var(--bg-white); border: 1px solid var(--border); padding: 1.9rem; border-radius: 4px; transition: var(--transition); }\n        .kf-grey-iron .testimonial-card:hover { box-shadow: 0 15px 35px rgba(0,0,0,0.06); transform: translateY(-3px); }\n        .kf-grey-iron .testimonial-card .stars { color: var(--accent); margin-bottom: 0.9rem; font-size: 0.95rem; letter-spacing: 2px; }\n        .kf-grey-iron .testimonial-card p.quote { font-size: 0.95rem; color: var(--text-main); line-height: 1.65; margin-bottom: 1.1rem; }\n        .kf-grey-iron .testimonial-location { font-size: 0.8rem; font-weight: 700; color: var(--primary); text-transform: uppercase; letter-spacing: 0.6px; }\n        .kf-grey-iron \/* ---- TRUST BAR ---- *\/\n        .trust-bar { background: var(--bg-white); border-bottom: 1px solid var(--border); padding: 1.8rem 5%; }\n        .kf-grey-iron .trust-bar-inner { display: flex; align-items: center; justify-content: center; gap: 2.8rem; flex-wrap: wrap; }\n        .kf-grey-iron .trust-bar-brand {\n            font-family: 'Playfair Display', serif; font-weight: 700; color: var(--primary); font-size: 1.15rem;\n            letter-spacing: 0.3px; padding-right: 2.2rem; border-right: 1px solid var(--border); white-space: nowrap;\n        }\n        .kf-grey-iron .trust-items { display: flex; gap: 2.6rem; flex-wrap: wrap; justify-content: center; }\n        .kf-grey-iron .trust-item { text-align: center; }\n        .kf-grey-iron .trust-item strong { display: block; font-family: 'Playfair Display', serif; color: var(--primary-dark); font-size: 1.1rem; }\n        .kf-grey-iron .trust-item span { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }\n        .kf-grey-iron \/* ---- QUOTE MODAL ---- *\/\n        .quote-modal-overlay {\n            display: none; position: fixed; inset: 0; background: rgba(10,14,13,0.75);\n            z-index: 99999; align-items: center; justify-content: center; padding: 2rem 1rem;\n            backdrop-filter: blur(3px);\n        }\n        .kf-grey-iron .quote-modal-overlay.active { display: flex; }\n        .kf-grey-iron .quote-modal {\n            background: var(--bg-white); width: 100%; max-width: 640px; max-height: 90vh;\n            overflow-y: auto; border-radius: 4px; position: relative;\n            box-shadow: 0 30px 80px rgba(0,0,0,0.5);\n            opacity: 0; transform: translateY(20px) scale(0.98);\n            transition: all 0.3s cubic-bezier(0.25, 1, 0.5, 1);\n        }\n        .kf-grey-iron .quote-modal-overlay.active .quote-modal { opacity: 1; transform: translateY(0) scale(1); }\n        .kf-grey-iron .quote-modal-header {\n            padding: 1.8rem 2.2rem 1rem; border-bottom: 1px solid var(--border);\n            display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem;\n        }\n        .kf-grey-iron .quote-modal-header h3 { font-size: 1.5rem; margin-bottom: 0.4rem; }\n        .kf-grey-iron .quote-modal-header p { color: var(--text-muted); font-size: 0.9rem; }\n        .kf-grey-iron .quote-modal-close {\n            background: var(--bg-gray); border: none; width: 34px; height: 34px; border-radius: 50%;\n            font-size: 1.2rem; line-height: 1; cursor: pointer; color: var(--text-muted); flex-shrink: 0;\n            display: flex; align-items: center; justify-content: center; transition: var(--transition);\n        }\n        .kf-grey-iron .quote-modal-close:hover { background: var(--primary); color: var(--bg-white); }\n        .kf-grey-iron .quote-modal-body { padding: 1.6rem 2.2rem 2.2rem; }\n        .kf-grey-iron \/* ---- WPFORMS STYLING (scoped to quote modal) ---- *\/\n        .quote-modal-body .wpforms-container { font-family: 'Open Sans', sans-serif; }\n        .kf-grey-iron .quote-modal-body .wpforms-field { padding: 0 0 1.4rem !important; }\n        .kf-grey-iron .quote-modal-body .wpforms-field-label {\n            font-family: 'Open Sans', sans-serif; font-weight: 600; font-size: 0.92rem;\n            color: var(--primary-dark) !important; margin-bottom: 0.5rem !important; display: block;\n        }\n        .kf-grey-iron .quote-modal-body .wpforms-required-label { color: var(--accent) !important; }\n        .kf-grey-iron .quote-modal-body .wpforms-field input[type=\"text\"], .kf-grey-iron .quote-modal-body .wpforms-field input[type=\"email\"], .kf-grey-iron .quote-modal-body .wpforms-field input[type=\"tel\"], .kf-grey-iron .quote-modal-body .wpforms-field input[type=\"number\"], .kf-grey-iron .quote-modal-body .wpforms-field textarea, .kf-grey-iron .quote-modal-body .wpforms-field select {\n            width: 100% !important; border: 1px solid var(--border) !important; border-radius: 4px !important;\n            padding: 0.85rem 1rem !important; font-size: 0.95rem !important; font-family: 'Open Sans', sans-serif !important;\n            color: var(--text-main) !important; background: var(--bg-light) !important; transition: var(--transition);\n            box-shadow: none !important;\n        }\n        .kf-grey-iron .quote-modal-body .wpforms-field input:focus, .kf-grey-iron .quote-modal-body .wpforms-field textarea:focus, .kf-grey-iron .quote-modal-body .wpforms-field select:focus {\n            outline: none !important; border-color: var(--primary) !important; background: var(--bg-white) !important;\n            box-shadow: 0 0 0 3px rgba(43,58,54,0.1) !important;\n        }\n        .kf-grey-iron .quote-modal-body .wpforms-field textarea { min-height: 130px; resize: vertical; }\n        .kf-grey-iron .quote-modal-body .wpforms-submit-container { margin-top: 0.5rem; }\n        .kf-grey-iron .quote-modal-body button[type=\"submit\"], .kf-grey-iron .quote-modal-body .wpforms-submit {\n            background: var(--primary) !important; color: var(--bg-white) !important; border: none !important;\n            padding: 0.9rem 2.4rem !important; font-size: 0.85rem !important; text-transform: uppercase !important;\n            letter-spacing: 1.5px !important; font-weight: 600 !important; border-radius: 2px !important;\n            cursor: pointer; transition: var(--transition);\n        }\n        .kf-grey-iron .quote-modal-body button[type=\"submit\"]:hover, .kf-grey-iron .quote-modal-body .wpforms-submit:hover { background: var(--primary-dark) !important; }\n        .kf-grey-iron .quote-modal-body .wpforms-error-container, .kf-grey-iron .quote-modal-body label.wpforms-error { color: #b3462c !important; font-size: 0.85rem !important; margin-top: 0.3rem !important; }\n        body.kf-modal-open { overflow: hidden; }\n        .kf-grey-iron .case-studies { background: var(--bg-white); }\n        .kf-grey-iron .case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2.5rem; }\n        .kf-grey-iron .case-card { background: var(--bg-white); border: 1px solid var(--border); transition: var(--transition); border-radius: 2px; overflow: hidden; }\n        .kf-grey-iron .case-card:hover { transform: translateY(-8px); box-shadow: 0 15px 35px rgba(0,0,0,0.08); }\n        .kf-grey-iron .case-img { width: 100%; height: 280px; background: #e5e4de; overflow: hidden; }\n        .kf-grey-iron .case-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }\n        .kf-grey-iron .case-card:hover .case-img img { transform: scale(1.05); }\n        .kf-grey-iron .case-info { padding: 2rem; }\n        .kf-grey-iron .case-info h3 { font-size: 1.4rem; margin-bottom: 0.8rem; }\n        .kf-grey-iron .case-info p { color: var(--text-muted); font-size: 0.95rem; line-height: 1.6; }\n        .kf-grey-iron .split-section { display: flex; flex-wrap: wrap; background: var(--bg-white); border-top: 1px solid var(--border); }\n        .kf-grey-iron .split-content { flex: 1; min-width: 300px; padding: 6rem 5%; display: flex; flex-direction: column; justify-content: center; }\n        .kf-grey-iron .split-image-container { flex: 1; min-width: 300px; background-color: #2a2a2a; overflow: hidden; position: relative; }\n        .kf-grey-iron .split-image-container img { width: 100%; height: 100%; object-fit: cover; position: absolute; top: 0; left: 0; }\n        .kf-grey-iron .check-list { list-style: none; margin-top: 1.5rem; }\n        .kf-grey-iron .check-list li { position: relative; padding-left: 1.8rem; margin-bottom: 0.8rem; font-weight: 600; color: var(--text-main); }\n        .kf-grey-iron .check-list li::before { content: '\u2713'; position: absolute; left: 0; color: var(--primary); font-weight: bold; }\n        .kf-grey-iron .split-content .short-para { margin-bottom: 0.9rem; }\n        .kf-grey-iron .faq { background-color: var(--bg-light); }\n        .kf-grey-iron .faq-container { max-width: 900px; margin: 0 auto; }\n        .kf-grey-iron .faq-item { border-bottom: 1px solid var(--border); }\n        .kf-grey-iron .faq-question { padding: 1.5rem 0; font-size: 1.15rem; font-weight: 600; cursor: pointer; display: flex; justify-content: space-between; align-items: center; color: var(--primary-dark); transition: var(--transition); }\n        .kf-grey-iron .faq-question:hover { color: var(--primary); }\n        .kf-grey-iron .faq-icon { font-size: 1.5rem; transition: transform 0.3s ease; color: var(--primary-light); }\n        .kf-grey-iron .faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; color: var(--text-muted); }\n        .kf-grey-iron .faq-answer p { padding-bottom: 1rem; font-size: 0.95rem; line-height: 1.7; }\n        .kf-grey-iron .faq-answer p + p { padding-top: 0; }\n        .kf-grey-iron .faq-item.active .faq-answer { max-height: 600px; }\n        .kf-grey-iron .faq-item.active .faq-icon { transform: rotate(45deg); }\n        .kf-grey-iron .cta-final { background: linear-gradient(135deg, #0a0e0d 0%, #2b3a36 100%); color: var(--bg-white); text-align: center; padding: 6rem 5%; }\n        .kf-grey-iron .cta-final h2 { color: var(--bg-white); font-size: 3rem; margin-bottom: 1.5rem; }\n        .kf-grey-iron .cta-final p { font-size: 1.1rem; color: var(--text-light); max-width: 600px; margin: 0 auto 2.5rem; }\n        .kf-grey-iron footer { background-color: var(--primary-dark); color: var(--text-light); padding: 5rem 5% 2rem; }\n        .kf-grey-iron .footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 3rem; max-width: 1400px; margin: 0 auto; padding-bottom: 3rem; border-bottom: 1px solid rgba(255,255,255,0.1); }\n        .kf-grey-iron footer h4 { color: #ffffff !important; font-size: 1.4rem; margin-bottom: 1.5rem; text-transform: uppercase; letter-spacing: 1px; }\n        .kf-grey-iron footer p, .kf-grey-iron footer ul li { font-size: 1.05rem; line-height: 1.7; }\n        .kf-grey-iron footer ul { list-style: none; }\n        .kf-grey-iron footer ul li { margin-bottom: 1rem; }\n        .kf-grey-iron footer a { color: #cccccc; transition: color 0.3s ease; }\n        .kf-grey-iron footer a:hover { color: var(--accent); }\n        .kf-grey-iron .footer-bottom { text-align: center; padding-top: 2rem; font-size: 0.95rem; color: #888888; }\n        .kf-grey-iron .footer-bottom-links { display: flex; justify-content: center; gap: 1.5rem; margin-top: 1rem; }\n        .kf-grey-iron .footer-bottom-links a { font-size: 0.85rem; color: #888888; text-decoration: underline; }\n        @media (max-width: 1024px) {\n            .kf-grey-iron .case-grid { grid-template-columns: repeat(2, 1fr); }\n            .kf-grey-iron .text-grid { grid-template-columns: 1fr; gap: 2rem; }\n            .kf-grey-iron .testimonial-grid { grid-template-columns: repeat(2, 1fr); }\n        }\n        @media (max-width: 768px) {\n            .kf-grey-iron section { padding: 4rem 5%; }\n            .kf-grey-iron .inner-hero { padding-top: 6rem; min-height: 50vh; }\n            .kf-grey-iron .inner-hero h1 { font-size: 2.8rem; }\n            .kf-grey-iron .section-header h2 { font-size: 2.2rem; }\n            .kf-grey-iron .testimonial-grid { grid-template-columns: 1fr; }\n            .kf-grey-iron .case-grid { grid-template-columns: 1fr; }\n            .kf-grey-iron .pricing-grid { grid-template-columns: 1fr; }\n            .kf-grey-iron .trust-bar-inner { flex-direction: column; gap: 1.2rem; text-align: center; }\n            .kf-grey-iron .trust-bar-brand { border-right: none; padding-right: 0; }\n            .kf-grey-iron .trust-items { gap: 1.6rem; }\n            .kf-grey-iron .timeline-step { padding: 1.4rem 0.5rem 1.4rem 0; gap: 1.1rem; }\n            .kf-grey-iron .timeline-dot { width: 42px; height: 42px; font-size: 1.05rem; }\n            .kf-grey-iron .timeline-track::before { left: 21px; }\n            .kf-grey-iron .timeline-content { flex-direction: column; align-items: flex-start; gap: 0.9rem; }\n            .kf-grey-iron .timeline-media { width: 100%; max-width: 320px; }\n            .kf-grey-iron .split-section { flex-direction: column !important; }\n            .kf-grey-iron .split-image-container { min-height: 350px; padding: 0; }\n            .kf-grey-iron .split-image-container img { position: static; height: 350px; }\n            .kf-grey-iron header { padding: 1rem 5%; flex-wrap: wrap; }\n            .kf-grey-iron .hamburger { display: flex; } \n            .kf-grey-iron nav { position: absolute; top: 100%; left: 0; width: 100%; background: rgba(255,255,255,0.98); box-shadow: 0 10px 15px rgba(0,0,0,0.1); clip-path: polygon(0 0, 100% 0, 100% 0, 0 0); transition: clip-path 0.4s ease-in-out; max-height: calc(100vh - 70px); overflow-y: auto; }\n            .kf-grey-iron nav.nav-active { clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%); }\n            .kf-grey-iron nav ul { flex-direction: column; padding: 2rem; gap: 1.5rem; align-items: flex-start; width: 100%; }\n            .kf-grey-iron nav ul li { width: 100%; }\n            .kf-grey-iron nav a, .kf-grey-iron .nav-dropdown-trigger { font-size: 1.3rem; width: 100%; display: block; }\n            .kf-grey-iron .dropdown { width: 100%; }\n            .kf-grey-iron .dropdown-menu { position: static; box-shadow: none; border-top: none; padding: 0; max-height: 0; overflow: hidden; visibility: hidden; opacity: 0; background: transparent; transition: max-height 0.4s ease, opacity 0.4s ease; transform: none; border-radius: 0; }\n            .kf-grey-iron .dropdown.active .dropdown-menu { max-height: 300px; opacity: 1; visibility: visible; padding: 0.5rem 0 0.5rem 1rem; }\n            .kf-grey-iron .dropdown-menu a { padding: 0.6rem 0; font-size: 1.1rem; border: none; white-space: normal; }\n            .kf-grey-iron .dropdown-menu a:hover { padding-left: 0.5rem; background: transparent; }\n            .kf-grey-iron .nav-cta { width: auto; display: inline-block; margin-top: 1rem;}\n        }\n    <\/style>\n<\/head>\n<body>\n<div class=\"kf-grey-iron\">\n    <!-- HERO -->\n    <section class=\"inner-hero\">\n        <img decoding=\"async\" src=\"https:\/\/kurtfoundry.com\/wp-content\/uploads\/2026\/07\/kurt-foundry-Grey-Iron-Casting-melt-iron.webp\" alt=\"Grey Iron Sand Casting Foundry\" class=\"inner-hero-bg\" title=\"\">\n        <div class=\"inner-hero-content\">\n            <span class=\"subtitle\" style=\"color: var(--accent);\">Kurt Foundry \u2014 Industrial Sand Casting Worldwide<\/span>\n            <h1>Grey Iron Castings<\/h1>\n            <p>High compressive strength. Natural vibration damping. Cost-effective at scale. As a specialized grey iron foundry, Kurt Foundry supplies custom, fully machined castings to industrial buyers across North America, Europe, and Southeast Asia.<\/p>\n            <a href=\"#\" class=\"btn btn-outline js-quote-btn\" style=\"color: var(--accent); border-color: var(--accent); margin-top: 1rem;\">Request a Free Quote<\/a>\n        <\/div>\n    <\/section>\n    <!-- TRUST BAR -->\n    <section class=\"trust-bar\">\n        <div class=\"trust-bar-inner\">\n            <span class=\"trust-bar-brand\">Kurt Foundry<\/span>\n            <div class=\"trust-items\">\n                <div class=\"trust-item\"><strong>ISO 9001:2015<\/strong><span>Certified Quality System<\/span><\/div>\n                <div class=\"trust-item\"><strong>50\u20135,000 lbs<\/strong><span>Casting Capacity per Piece<\/span><\/div>\n                <div class=\"trust-item\"><strong>DDP \/ FOB<\/strong><span>Shipped Worldwide<\/span><\/div>\n                <div class=\"trust-item\"><strong>100% In-House<\/strong><span>Casting to CNC to Inspection<\/span><\/div>\n            <\/div>\n        <\/div>\n    <\/section>\n    <!-- PROCESS -->\n    <section class=\"process\">\n        <div class=\"container\">\n            <div class=\"section-header reveal-up\">\n                <span class=\"subtitle\">The Kurt Foundry Process<\/span>\n                <h2>Our Grey Iron Sand Casting Process<\/h2>\n                <p style=\"color: #aaa;\">Consistent quality starts with precise metallurgical control and proven mold engineering for large industrial components.<\/p>\n            <\/div>\n            <div class=\"process-timeline reveal-up delay-1\">\n                <div class=\"timeline-track\">\n                    <div class=\"timeline-step\">\n                        <div class=\"timeline-dot\">1<\/div>\n                        <div class=\"timeline-content\">\n                            <div class=\"timeline-media\">\n                                <img decoding=\"async\" src=\"https:\/\/kurtfoundry.com\/wp-content\/uploads\/2026\/07\/custom-flywheel-machine-drawing.jpeg\" alt=\"CAD Review\" style=\"width: 100%; height: 100%; object-fit: cover;\" title=\"\">\n                            <\/div>\n                            <div class=\"timeline-text\">\n                                <h3>CAD &#038; Pattern Making<\/h3>\n                                <p>We review your CAD files for castability and build the tooling and pattern, designing gating and risering systems to produce dense, defect-free iron on every pour.<\/p>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n                    <div class=\"timeline-step\">\n                        <div class=\"timeline-dot\">2<\/div>\n                        <div class=\"timeline-content\">\n                            <div class=\"timeline-media\">\n                                <iframe src=\"https:\/\/www.youtube.com\/embed\/-ba8WZZm_D8\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen style=\"width: 100%; height: 100%;\"><\/iframe>\n                            <\/div>\n                            <div class=\"timeline-text\">\n                                <h3>Sand Mold Making<\/h3>\n                                <p>Using high-grade resin sand, we produce rigid molds that hold tight dimensional tolerances and a consistent surface finish across the run.<\/p>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n                    <div class=\"timeline-step\">\n                        <div class=\"timeline-dot\">3<\/div>\n                        <div class=\"timeline-content\">\n                            <div class=\"timeline-media\">\n                                <img decoding=\"async\" src=\"https:\/\/kurtfoundry.com\/wp-content\/uploads\/2026\/07\/grey-Iron-Melting.webp\" alt=\"Furnace Melting\" style=\"width: 100%; height: 100%; object-fit: cover;\" title=\"\">\n                            <\/div>\n                            <div class=\"timeline-text\">\n                                <h3>Iron Melting<\/h3>\n                                <p>Scrap steel and pig iron are melted in medium-frequency induction furnaces under tightly controlled temperature and charge composition.<\/p>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n                    <div class=\"timeline-step\">\n                        <div class=\"timeline-dot\">4<\/div>\n                        <div class=\"timeline-content\">\n                            <div class=\"timeline-media\">\n                                <img decoding=\"async\" src=\"https:\/\/kurtfoundry.com\/wp-content\/uploads\/2026\/07\/Carbon-Equivalent-Testing-for-gery-iron.webp\" alt=\"Carbon Equivalent Testing\" style=\"width: 100%; height: 100%; object-fit: cover;\" title=\"\">\n                            <\/div>\n                            <div class=\"timeline-text\">\n                                <h3>Carbon Equivalent Testing<\/h3>\n                                <p>Molten iron is sampled and tested by spectrometer before pouring to confirm Carbon Equivalent (CE) falls within the target range for the specified grade.<\/p>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n                    <div class=\"timeline-step\">\n                        <div class=\"timeline-dot\">5<\/div>\n                        <div class=\"timeline-content\">\n                            <div class=\"timeline-media\">\n                                <img decoding=\"async\" src=\"https:\/\/kurtfoundry.com\/wp-content\/uploads\/2026\/07\/gery-iron-parts-are-cooling.webp\" alt=\"Molds Cooling\" style=\"width: 100%; height: 100%; object-fit: cover;\" title=\"\">\n                            <\/div>\n                            <div class=\"timeline-text\">\n                                <h3>Cooling<\/h3>\n                                <p>Castings cool under controlled conditions inside the mold before shakeout, allowing the microstructure to fully solidify without internal stress.<\/p>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n                    <div class=\"timeline-step\">\n                        <div class=\"timeline-dot\">6<\/div>\n                        <div class=\"timeline-content\">\n                            <div class=\"timeline-media\">\n                                <iframe src=\"https:\/\/www.youtube.com\/embed\/2DDbn97Bjbc\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen style=\"width: 100%; height: 100%;\"><\/iframe>\n                            <\/div>\n                            <div class=\"timeline-text\">\n                                <h3>CNC Machining<\/h3>\n                                <p>Castings are shot-blasted and fully CNC machined in-house \u2014 drilling, milling, boring, and turning to final print dimensions.<\/p>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n                    <div class=\"timeline-step\">\n                        <div class=\"timeline-dot\">7<\/div>\n                        <div class=\"timeline-content\">\n                            <div class=\"timeline-media\">\n                                <iframe src=\"https:\/\/www.youtube.com\/embed\/dDerZkh6MwI\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen style=\"width: 100%; height: 100%;\"><\/iframe>\n                            <\/div>\n                            <div class=\"timeline-text\">\n                                <h3>Sampling Inspection<\/h3>\n                                <p>Batch samples undergo spectrometric analysis and mechanical testing to confirm every part meets the target ASTM or DIN grade specification.<\/p>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n                    <div class=\"timeline-step\">\n                        <div class=\"timeline-dot\">8<\/div>\n                        <div class=\"timeline-content\">\n                            <div class=\"timeline-media\">\n                                <img decoding=\"async\" src=\"https:\/\/kurtfoundry.com\/wp-content\/uploads\/2026\/07\/iron-parts-packaging.webp\" alt=\"Packing &#038; Shipping\" style=\"width: 100%; height: 100%; object-fit: cover;\" title=\"\">\n                            <\/div>\n                            <div class=\"timeline-text\">\n                                <h3>Packing &#038; Shipping<\/h3>\n                                <p>Parts are cleaned, rust-proofed, and export-packed to withstand ocean freight, then shipped worldwide via DDP or FOB logistics.<\/p>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n                <\/div>\n            <\/div>\n        <\/div>\n    <\/section>\n    <!-- CTA STRIP -->\n    <section class=\"cta-strip\">\n        <h3>Have a Drawing Ready? Talk to Kurt Foundry.<\/h3>\n        <p>Send your 2D or 3D file \u2014 a foundry engineer will confirm castability and return a firm quote for our grey iron casting service within 48 hours.<\/p>\n        <a href=\"#\" class=\"btn btn-outline js-quote-btn\">Submit Your Inquiry<\/a>\n    <\/section>\n    <!-- WHY GREY IRON -->\n    <section class=\"text-content-section\">\n        <div class=\"container text-grid\">\n            <div class=\"reveal-up\">\n                <span class=\"subtitle\">The Kurt Foundry Advantage<\/span>\n                <h2>Grey Iron: The Lowest-Cost Casting Material for the Job<\/h2>\n                <p class=\"short-para\">Grey iron is the cheapest ferrous casting material available \u2014 low melt cost, no expensive alloying, and fast machining keep per-part price down. It&#8217;s the default choice for buyers who need a custom grey iron casting service without paying for the tensile strength of steel or ductile iron.<\/p>\n                <p class=\"short-para\">Our foundry casts personalized grey iron parts from 50 lbs to 5,000 lbs, fully CNC machined and CMM-inspected in-house, and ships on DDP or FOB terms with full material certifications.<\/p>\n                <div style=\"display:flex; gap:1rem; flex-wrap:wrap; margin-top: 1.5rem;\">\n                    <a href=\"#standards\" class=\"btn btn-dark\">View Material Grades<\/a>\n                    <a href=\"#\" class=\"btn btn-outline js-quote-btn\">Request a Quote<\/a>\n                <\/div>\n            <\/div>\n            <div class=\"reveal-up delay-1\">\n                <div class=\"video-wrapper\">\n                    <iframe src=\"https:\/\/www.youtube.com\/embed\/AOixpw6pKm4\" title=\"Grey Iron Castings - Manufacturing\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe>\n                <\/div>\n            <\/div>\n        <\/div>\n    <\/section>\n    <!-- GRADES TABLE -->\n    <section id=\"standards\" class=\"grades-section\">\n        <div class=\"container\">\n            <div class=\"section-header reveal-up\">\n                <span class=\"subtitle\">Kurt Foundry Metallurgy Lab<\/span>\n                <h2>Common Grey Iron Casting Grades<\/h2>\n                <p>Our metallurgy team controls carbon and silicon equivalents to produce the correct flake structure for each bespoke grade, whether the specification is written to ASTM\/SAE (gray iron) or ISO\/EN (grey iron).<\/p>\n            <\/div>\n            \n            <div class=\"table-responsive reveal-up delay-1\">\n                <table>\n                    <thead>\n                        <tr>\n                            <th>Standard \/ Grade<\/th>\n                            <th>Min. Tensile Strength (MPa)<\/th>\n                            <th>Typical Hardness (HB)<\/th>\n                            <th>Common Applications<\/th>\n                        <\/tr>\n                    <\/thead>\n                    <tbody>\n                        <tr>\n                            <td class=\"grade-name\">ASTM A48 Class 20 \/ 25<\/td>\n                            <td>\u2265 150<\/td>\n                            <td>140 &#8211; 190<\/td>\n                            <td>Counterweights, non-pressure housings, hand wheels, light-duty covers.<\/td>\n                        <\/tr>\n                        <tr>\n                            <td class=\"grade-name\">ASTM A48 Class 30<\/td>\n                            <td>\u2265 207<\/td>\n                            <td>170 &#8211; 220<\/td>\n                            <td>Flywheels, pump casings, gearboxes, machinery bases.<\/td>\n                        <\/tr>\n                        <tr>\n                            <td class=\"grade-name\">ASTM A48 Class 35<\/td>\n                            <td>\u2265 241<\/td>\n                            <td>190 &#8211; 240<\/td>\n                            <td>Heavy machine tool beds, hydraulic cylinders, brake rotors.<\/td>\n                        <\/tr>\n                        <tr>\n                            <td class=\"grade-name\">ASTM A48 Class 40<\/td>\n                            <td>\u2265 276<\/td>\n                            <td>200 &#8211; 260<\/td>\n                            <td>High-stress diesel engine blocks, heavy-duty flywheels.<\/td>\n                        <\/tr>\n                        <tr>\n                            <td class=\"grade-name\">DIN EN 1561 EN-GJL-250<\/td>\n                            <td>\u2265 250<\/td>\n                            <td>180 &#8211; 230<\/td>\n                            <td>European equivalent for general engineering and machine parts, specified as grey iron under EN 1561.<\/td>\n                        <\/tr>\n                    <\/tbody>\n                <\/table>\n            <\/div>\n            <div class=\"standards-note reveal-up delay-2\">\n                <strong>European Standards for Grey Iron Castings (DIN EN 1561):<\/strong> Buyers sourcing to EN or ISO drawings can specify EN-GJL grades directly \u2014 Kurt Foundry matches carbon equivalent and inoculation practice to meet EN 1561 tensile and hardness requirements without deviation from ASTM-grade production control.\n            <\/div>\n            <div style=\"text-align:center; margin-top: 2rem;\">\n                <a href=\"#\" class=\"btn btn-dark js-quote-btn\">Request Grade-Specific Quote<\/a>\n            <\/div>\n        <\/div>\n    <\/section>\n    <!-- PRICING -->\n    <section class=\"text-content-section\" style=\"background: var(--bg-white);\">\n        <div class=\"container\">\n            <div class=\"section-header reveal-up\">\n                <span class=\"subtitle\">Indicative Pricing<\/span>\n                <h2>What Does a Grey Iron Casting Cost?<\/h2>\n                <p>Grey iron is the most affordable ferrous casting material we offer, typically running $1\u2013$10 per kg depending on grade, finishing, and order volume. Use the ranges below as a starting point \u2014 your exact quote will depend on the drawing.<\/p>\n            <\/div>\n            <div class=\"pricing-grid reveal-up delay-1\">\n                <div class=\"price-card\">\n                    <h3>As-Cast \/ Minimal Finishing<\/h3>\n                    <div class=\"price-tag\">$1 \u2013 $4 \/ kg<\/div>\n                    <p>Shot-blasted and dimensionally inspected, delivered as a raw or lightly finished casting for your own downstream machining.<\/p>\n                <\/div>\n                <div class=\"price-card\">\n                    <h3>Fully CNC Machined<\/h3>\n                    <div class=\"price-tag\">$5 \u2013 $10 \/ kg<\/div>\n                    <p>Complete CNC machining, drilling, and tapping \u2014 ready for immediate assembly on arrival.<\/p>\n                <\/div>\n            <\/div>\n            <p style=\"text-align:center; color:var(--text-muted); margin-top:1.5rem; font-size:0.92rem;\">Larger order volumes reduce the per-kg price. The final quote depends on part geometry, tolerance requirements, and machining scope.<\/p>\n            <div style=\"text-align:center; margin-top: 1.8rem;\">\n                <a href=\"#\" class=\"btn btn-dark js-quote-btn\">Request a Free Quote<\/a>\n            <\/div>\n        <\/div>\n    <\/section>\n    <!-- APPLICATIONS -->\n    <section class=\"case-studies\">\n        <div class=\"container\">\n            <div class=\"section-header reveal-up\">\n                <span class=\"subtitle\">What Kurt Foundry Delivers<\/span>\n                <h2>What We Cast in Grey Iron<\/h2>\n                <p>Grey iron is the standard material choice where mass, damping, and machinability matter more than tensile strength. Below are the made-to-order components our foundry produces most frequently as part of our grey iron casting service.<\/p>\n            <\/div>\n            <div class=\"case-grid\">\n                <div class=\"case-card reveal-up\">\n                    <div class=\"case-img\">\n                        <img decoding=\"async\" src=\"https:\/\/kurtfoundry.com\/wp-content\/uploads\/2026\/03\/A-black-cast-iron-block-labeled-with-the-letter-h-used-as-a-counterweight-in-various-applications.webp\" alt=\"Heavy Cast Iron Counterweights\" title=\"\">\n                    <\/div>\n                    <div class=\"case-info\">\n                        <h3>Heavy Counterweights<\/h3>\n                        <p>Grey iron&#8217;s high density and low cost per kilogram make it the standard choice for elevator, crane, tractor, and construction equipment counterweights. We cast single, personalized pieces up to 5,000 lbs.<\/p>\n                    <\/div>\n                <\/div>\n                <div class=\"case-card reveal-up delay-1\">\n                    <div class=\"case-img\">\n                        <a href=\"https:\/\/kurtfoundry.com\/product\/custom-flywheels\/\">\n                            <img decoding=\"async\" src=\"https:\/\/kurtfoundry.com\/wp-content\/uploads\/2026\/06\/Gray-Iron-Flywheels.webp\" alt=\"Custom Grey Iron Industrial Flywheels\" title=\"\">\n                        <\/a>\n                    <\/div>\n                    <div class=\"case-info\">\n                        <h3>Industrial Flywheels<\/h3>\n                        <p>Cast to your bespoke dimensional drawings with tight bore and face tolerances. Grey iron&#8217;s vibration damping properties make it well-suited for flywheels in heavy-duty power transmission and press applications.<\/p>\n                        <a href=\"https:\/\/kurtfoundry.com\/product\/custom-flywheels\/\" class=\"btn btn-outline\" style=\"margin-top: 1rem; padding: 0.6rem 1.5rem; font-size: 0.8rem;\">View Details<\/a>\n                    <\/div>\n                <\/div>\n                <div class=\"case-card reveal-up delay-2\">\n                    <div class=\"case-img\">\n                        <img decoding=\"async\" src=\"https:\/\/kurtfoundry.com\/wp-content\/uploads\/2026\/03\/custom-handwheel.webp\" alt=\"Custom Cast Iron Handwheels\" title=\"\">\n                    <\/div>\n                    <div class=\"case-info\">\n                        <h3>Custom Hand Wheels<\/h3>\n                        <p>Cast iron hand wheels offer structural rigidity and a solid grip for valve actuation and heavy machinery adjustment. We cast standard and fully custom, made-to-order profiles to your drawings.<\/p>\n                    <\/div>\n                <\/div>\n            <\/div>\n        <\/div>\n    <\/section>\n    <!-- CTA STRIP -->\n    <section class=\"cta-strip\">\n        <h3>See Your Part Cast by Kurt Foundry<\/h3>\n        <p>Not sure which grade fits your application? Send your drawing and duty cycle \u2014 we&#8217;ll recommend the right spec.<\/p>\n        <a href=\"#\" class=\"btn btn-outline js-quote-btn\">Submit Your Inquiry<\/a>\n    <\/section>\n    <!-- TESTIMONIALS -->\n    <section style=\"background: var(--bg-white);\">\n        <div class=\"container\">\n            <div class=\"section-header reveal-up\">\n                <span class=\"subtitle\">Trusted by Buyers Worldwide<\/span>\n                <h2>What Our Clients Say<\/h2>\n                <p>Grey iron castings shipped from Kurt Foundry to buyers across six continents.<\/p>\n            <\/div>\n            <div class=\"testimonial-grid reveal-up delay-1\">\n                <div class=\"testimonial-card\">\n                    <div class=\"stars\">\u2605\u2605\u2605\u2605\u2605<\/div>\n                    <p class=\"quote\">Precise dimensions and excellent grey iron casting quality!<\/p>\n                    <div class=\"testimonial-location\">Chicago, USA<\/div>\n                <\/div>\n                <div class=\"testimonial-card\">\n                    <div class=\"stars\">\u2605\u2605\u2605\u2605\u2605<\/div>\n                    <p class=\"quote\">Perfect surface finish and extremely fast shipping. Highly recommended!<\/p>\n                    <div class=\"testimonial-location\">Osaka, Japan<\/div>\n                <\/div>\n                <div class=\"testimonial-card\">\n                    <div class=\"stars\">\u2605\u2605\u2605\u2605\u2605<\/div>\n                    <p class=\"quote\">Outstanding vibration damping properties. Highly recommend Kurt Foundry.<\/p>\n                    <div class=\"testimonial-location\">Toronto, Canada<\/div>\n                <\/div>\n                <div class=\"testimonial-card\">\n                    <div class=\"stars\">\u2605\u2605\u2605\u2605\u2605<\/div>\n                    <p class=\"quote\">The grey iron casting structure is dense and entirely flawless.<\/p>\n                    <div class=\"testimonial-location\">Milan, Italy<\/div>\n                <\/div>\n            <\/div>\n        <\/div>\n    <\/section>\n    <!-- WHY US -->\n    <section class=\"split-section\">\n        <div class=\"split-image-container reveal-up\">\n            <img decoding=\"async\" src=\"https:\/\/kurtfoundry.com\/wp-content\/uploads\/2026\/07\/foreign-clients-visited-kurt-foundry.webp\" alt=\"Foreign clients visited Kurt Foundry\" title=\"\">\n        <\/div>\n        <div class=\"split-content reveal-up delay-1\">\n            <span class=\"subtitle\">Why Kurt Foundry<\/span>\n            <h2>One Supplier. Casting to Finished Part.<\/h2>\n            <p class=\"short-para\">Kurt Foundry runs dedicated heavy casting lines for custom grey iron castings at our Shandong-based foundry. From pattern making through CNC machining and final inspection, all production steps are handled in-house.<\/p>\n            <p class=\"short-para\">Buyers receive material test reports, spectrometry data, and CMM dimensional reports with each shipment. No third-party lab delays.<\/p>\n            <p class=\"short-para\">We ship on DDP or FOB terms to buyers in North America, Europe, Southeast Asia, and the Middle East. Lead time and freight options are confirmed at the quotation stage.<\/p>\n            <ul class=\"check-list\" style=\"margin-top: 1.5rem;\">\n                <li>Heavy Section Capacity: 50 lbs \u2013 5,000 lbs per Piece<\/li>\n                <li>In-House 5-Axis CNC Machining &#038; CMM Inspection<\/li>\n                <li>Pre-Pour Spectrometry &#038; Carbon Equivalent Verification<\/li>\n                <li>DDP \/ FOB Shipping to North America, Europe &#038; Beyond<\/li>\n                <li>Material Certs &#038; Inspection Reports with Every Order<\/li>\n            <\/ul>\n            <a href=\"#\" class=\"btn btn-dark js-quote-btn\" style=\"margin-top: 1.8rem;\">Request a Free Quote<\/a>\n        <\/div>\n    <\/section>\n    <!-- FAQ -->\n    <section id=\"faq\" class=\"faq\">\n        <div class=\"container faq-container\">\n            <div class=\"section-header reveal-up\">\n                <span class=\"subtitle\">Kurt Foundry Knowledge Base<\/span>\n                <h2>Grey Iron Casting FAQs<\/h2>\n            <\/div>\n            <div class=\"faq-list reveal-up delay-1\">\n                <div class=\"faq-item\">\n                    <div class=\"faq-question\">Where is your foundry located? <span class=\"faq-icon\">+<\/span><\/div>\n                    <div class=\"faq-answer\">\n                        <p>Our foundry is based in Weifang City, Shandong Province, China \u2014 one of the country&#8217;s established centers for iron and steel casting. Casting, machining, and inspection all happen at this single site.<\/p>\n                        <p>We ship worldwide on DDP or FOB terms directly from our foundry, with export packing rated for ocean freight.<\/p>\n                    <\/div>\n                <\/div>\n                <div class=\"faq-item\">\n                    <div class=\"faq-question\">Is Grey Iron the same as Gray Iron? <span class=\"faq-icon\">+<\/span><\/div>\n                    <div class=\"faq-answer\">\n                        <p>Yes \u2014 no metallurgical difference. &#8220;Grey iron&#8221; is the spelling used in ISO 185, EN 1561, and most markets outside North America. &#8220;Gray iron&#8221; is the ASTM and SAE spelling used in the United States and Canada.<\/p>\n                        <p>Kurt Foundry casts to both naming systems. Send us either an EN-GJL grade or an ASTM class and we will match the equivalent specification.<\/p>\n                    <\/div>\n                <\/div>\n                <div class=\"faq-item\">\n                    <div class=\"faq-question\">When should I specify Grey Iron instead of Ductile Iron? <span class=\"faq-icon\">+<\/span><\/div>\n                    <div class=\"faq-answer\">\n                        <p>Grey iron is the better choice when vibration damping, thermal conductivity, and cost per kilogram are the primary concerns \u2014 machine bases, counterweights, motor housings, and pump casings are common examples.<\/p>\n                        <p>Ductile iron is the correct choice when the part must withstand impact loading or bending stress, or when elongation at break is a design requirement. If you are uncertain which material fits your application, send us the drawing and we will advise.<\/p>\n                    <\/div>\n                <\/div>\n                <div class=\"faq-item\">\n                    <div class=\"faq-question\">Why does Grey Iron machine so well? <span class=\"faq-icon\">+<\/span><\/div>\n                    <div class=\"faq-answer\">\n                        <p>The graphite flakes embedded in the iron matrix act as a natural chip breaker and cutting lubricant during CNC operations.<\/p>\n                        <p>The result is faster cutting speeds, lower tool wear, and cleaner surface finishes compared to carbon steel or ductile iron \u2014 which reduces machining cost and cycle time on complex components.<\/p>\n                    <\/div>\n                <\/div>\n                <div class=\"faq-item\">\n                    <div class=\"faq-question\">What is the maximum casting weight you can produce? <span class=\"faq-icon\">+<\/span><\/div>\n                    <div class=\"faq-answer\">\n                        <p>Our heavy resin sand casting lines handle single grey iron components from 50 lbs up to 5,000 lbs (approximately 2.5 metric tons) per piece.<\/p>\n                        <p>For parts outside that range, contact us directly. We can advise on design modifications or split-casting approaches where applicable.<\/p>\n                    <\/div>\n                <\/div>\n                <div class=\"faq-item\">\n                    <div class=\"faq-question\">Can Grey Iron be welded? <span class=\"faq-icon\">+<\/span><\/div>\n                    <div class=\"faq-answer\">\n                        <p>Welding grey iron is technically possible but carries significant risk of cracking during the heating and cooling cycle due to the material&#8217;s high carbon content and low ductility.<\/p>\n                        <p>Where possible, we recommend redesigning assemblies so components are bolted together or cast as a single piece. Our DFM review will flag any weld-dependent designs before tooling is cut.<\/p>\n                    <\/div>\n                <\/div>\n                <div class=\"faq-item\">\n                    <div class=\"faq-question\">Do you supply fully machined, ready-to-assemble parts? <span class=\"faq-icon\">+<\/span><\/div>\n                    <div class=\"faq-answer\">\n                        <p>Yes. Kurt Foundry provides fully integrated production \u2014 casting, CNC machining, and inspection under one roof.<\/p>\n                        <p>Parts are delivered ready for assembly. Buyers specify the machining scope in the RFQ, and we quote casting and machining together as a single turnkey price.<\/p>\n                    <\/div>\n                <\/div>\n            <\/div>\n        <\/div>\n    <\/section>\n    <!-- FINAL CTA -->\n    <section class=\"cta-final\">\n        <div class=\"container reveal-scale\">\n            <h2>Ready to Quote Your Grey Iron Project with Kurt Foundry?<\/h2>\n            <p>Submit 2D drawings or 3D CAD files. A foundry engineer will review castability, confirm the appropriate ASTM or EN grade, and return a detailed quote \u2014 including machining scope and DDP\/FOB pricing \u2014 within 48 hours.<\/p>\n            <a href=\"#\" class=\"btn btn-white js-quote-btn\">Send Your RFQ Now<\/a>\n        <\/div>\n    <\/section>\n    <script>\n        document.addEventListener(\"DOMContentLoaded\", function() {\n            const revealElements = document.querySelectorAll(\".reveal-up, .reveal-scale\");\n            const revealObserver = new IntersectionObserver((entries, observer) => {\n                entries.forEach(entry => {\n                    if (entry.isIntersecting) {\n                        entry.target.classList.add(\"active\");\n                    }\n                });\n            }, { root: null, threshold: 0.1, rootMargin: \"0px 0px -20px 0px\" });\n            revealElements.forEach(el => revealObserver.observe(el));\n            const faqItems = 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e.preventDefault();\n                overlay.classList.add('active');\n                document.body.classList.add('kf-modal-open');\n            }\n            function closeModal() {\n                overlay.classList.remove('active');\n                document.body.classList.remove('kf-modal-open');\n            }\n            triggers.forEach(btn => btn.addEventListener('click', openModal));\n            closeBtn.addEventListener('click', closeModal);\n            overlay.addEventListener('click', function(e) {\n                if (e.target === overlay) closeModal();\n            });\n            document.addEventListener('keydown', function(e) {\n                if (e.key === 'Escape' && overlay.classList.contains('active')) closeModal();\n            });\n        });\n    <\/script>\n    <!-- QUOTE MODAL -->\n    <div class=\"quote-modal-overlay\" id=\"quoteModalOverlay\">\n        <div class=\"quote-modal\" role=\"dialog\" aria-modal=\"true\" aria-labelledby=\"quoteModalTitle\">\n            <div class=\"quote-modal-header\">\n                <div>\n                    <h3 id=\"quoteModalTitle\">Request a Free Quote<\/h3>\n                    <p>Send your drawing and spec \u2014 a foundry engineer replies within 48 hours.<\/p>\n                <\/div>\n                <button type=\"button\" class=\"quote-modal-close\" id=\"quoteModalClose\" aria-label=\"Close\">&times;<\/button>\n            <\/div>\n            <div class=\"quote-modal-body\">\n                <style id=\"wpforms-css-vars-1346\">\n\t\t\t\t#wpforms-1346 {\n\t\t\t\t--wpforms-container-padding: 0px;\n--wpforms-container-border-width: 1px;\n--wpforms-container-border-radius: 3px;\n--wpforms-background-color: rgba(0, 0, 0, 0);\n--wpforms-field-size-input-height: 43px;\n--wpforms-field-size-input-spacing: 15px;\n--wpforms-field-size-font-size: 16px;\n--wpforms-field-size-line-height: 19px;\n--wpforms-field-size-padding-h: 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