Quick Answer
Cross-referencing international casting material grades requires matching both chemical composition limits and mechanical/microstructural acceptance rules across ASTM (US), EN/DIN & Werkstoff Nr. (Europe), JIS (Japan), and GB/T (China). While ASTM A216 WCB maps to EN 1.0619 (GP240GH) / JIS SCPH2, ASTM A351 CF8M maps to EN 1.4408 / JIS SCS14A, and DIN GG25 (EN-GJL-250) maps to ASTM A48 Class 35 / GB HT250, they are functional equivalents rather than blind 1:1 drop-ins: EN pressure grades often mandate Charpy impact verification, ASTM stainless grades specify ferrite-controlled ranges, and gray/ductile iron standards test tensile strength on different cast bar diameters.
⚙ Engineering & Foundry Verification — Qingdao Yucheng (YCUMETAL) 34,000㎡ Pingdu Facility
All casting grades on this page are poured and machined in-house at our 34,000㎡ Pingdu foundry & CNC plant (400+ staff, IATF 16949 & ISO 9001 certified). Every heat is verified by Spectro optical emission spectrometry before pouring, with internal soundness and machined datums validated via Nikon XTH 320 industrial CT, Hexagon CMM, and Nikon metallographic microscopy.
Process Capability: Silica Sol Investment Casting (cavity accuracy ≤0.05 mm, min hole Ø0.3 mm, ISO 8062 CT4–CT6) • Shell Mold & Resin Sand Casting • 3/4/5-Axis CNC Machining (±0.025 mm, Ra 0.8–3.2 μm) • Upload STEP / IGS / PDF Drawing for Free DFM Review →
Interactive Casting Grade Cross-Reference & ISO 8062 Tolerance Calculator
Use the engineering lookup tool below to search equivalent casting grades across ASTM, EN/DIN (Werkstoff Nr.), JIS, and GB/T, or calculate the expected ISO 8062 casting tolerance (CT4–CT10) and machining allowance (RMA) for your nominal feature dimension:
Part A: Multi-Standard Casting Alloy Equivalent Finder
| Family | ASTM / UNS (USA) | EN / DIN & Werkstoff (EU) | JIS (Japan) | GB/T (China) | Min Yield / Tensile (MPa) | Key RFQ / Metallurgy Note |
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Part B: ISO 8062 Casting Tolerance (CT) & Machining Allowance (RMA) Estimator
1. Cast Stainless Steel & Duplex Cross-Reference Table (ASTM A351 / A743 / A487 / A890 vs EN 10213 / 10283 vs JIS G5121 vs GB/T 12230)
When sourcing corrosion-resistant valve bodies, pump impellers, and marine fittings via silica sol lost wax investment casting, buyers frequently translate European EN 10213 / Werkstoff Nr. drawings into ASTM A351 or JIS G5121 specifications. Pay special attention to carbon limits (CF8 vs CF8M vs CF3M) and delta-ferrite control:
| Alloy Class | ASTM Standard & Grade | Wrought Counterpart | EN 10213 / 10283 (Werkstoff Nr.) | JIS G5121 | GB/T 12230 (China) | Key Chemical & Mechanical Spec |
|---|---|---|---|---|---|---|
| Austenitic 18Cr-8Ni | ASTM A351 CF8 | AISI 304 | GX5CrNi19-10 (1.4308) | SCS13A | ZG08Cr18Ni9 | C ≤0.08%, Cr 18–21%, Ni 8–11%; Yield ≥205 MPa, UTS ≥485 MPa |
| Low-Carbon 18Cr-8Ni | ASTM A351 CF3 | AISI 304L | GX2CrNi19-11 (1.4309) | SCS19A | ZG03Cr18Ni10 | C ≤0.03%; resists intergranular carbide precipitation during welding |
| Austenitic 18Cr-10Ni-2.5Mo | ASTM A351 CF8M | AISI 316 | GX5CrNiMo19-11-2 (1.4408) | SCS14A | ZG08Cr18Ni12Mo2 | C ≤0.08%, Mo 2.0–3.0%; 5–20% controlled ferrite for pressure soundness |
| Low-Carbon 18Cr-10Ni-2.5Mo | ASTM A351 CF3M | AISI 316L | GX2CrNiMo19-11-2 (1.4409) | SCS16A | ZG03Cr18Ni12Mo2 | C ≤0.03%, Mo 2.0–3.0%; preferred for NACE MR0175 & welded manifolds |
| Martensitic 12Cr | ASTM A217 / A743 CA15 | AISI 410 | GX12Cr12 (1.4008) | SCS1 | ZG12Cr13 | Cr 11.5–14.0%, C ≤0.15%; normalized & tempered, Yield ≥450 MPa |
| Martensitic 13Cr-4Ni-Mo | ASTM A487 / A352 CA6NM | F6NM (UNS S41500) | GX4CrNi13-4 (1.4317) | SCS6 | ZG04Cr13Ni4Mo | C ≤0.06%, Ni 3.5–4.5%, Mo 0.4–1.0%; Yield ≥550 MPa, high impact toughness |
| Precipitation Hardening | ASTM A747 CB7Cu-1 | 17-4 PH (630) | GX5CrNiCu16-4 (1.4542) | SCS24 | ZG05Cr17Ni4Cu4Nb | Cu 2.5–3.2%; solution + H900/H1025/H1150 aged, UTS up to 1,170 MPa |
| High-Alloy Austenitic | ASTM A351 CN7M | Alloy 20 (N08020) | GX2NiCrMoCu25-20-5 (1.4536) | SCS23 | ZG03Cr20Ni29Mo3Cu4 | Ni 27.5–30.5%, Cr 19–22%, Cu 3–4%; solution annealed at 1,120°C water quench |
| Duplex Stainless | ASTM A890 Gr 1B (CD4MCuN) | 2205 / 255 Duplex | GX2CrNiMoCuN25-6-3-3 (1.4517) | SCS10 | ZG03Cr25Ni5Mo2Cu3N | 50/50 austenite-ferrite; Yield ≥485 MPa, UTS ≥690 MPa, chloride SCC resistant |
2. Cast Carbon, Low-Alloy & Austenitic Manganese Steel Cross-Reference (ASTM A216 / A352 / A217 / A128 vs EN 10213 vs JIS vs GB/T)
In valve body castings, construction machinery, and energy & electricity equipment, carbon and low-alloy steels carry structural and pressure loads. Note that European EN 10213 GP240GH (1.0619) mandates a tighter carbon maximum (C ≤0.23%) and minimum 27 J Charpy V-notch impact energy at +20°C, whereas standard ASTM A216 WCB allows C ≤0.30% with impact testing only as Supplementary Requirement S2:
| Service Category | ASTM Grade | EN 10213 / 10293 (Werkstoff Nr.) | JIS Standard | GB/T Standard | Heat Treatment & Mechanical Baseline |
|---|---|---|---|---|---|
| Ambient/Moderate Temp Pressure | ASTM A216 WCB | GP240GH (1.0619 / DIN GS-C25) | JIS G5151 SCPH2 | GB/T 12229 ZG250-485 | Normalized or Annealed; Yield ≥250 MPa, UTS 485–655 MPa, Elong ≥22% |
| Higher Yield / Weldable Pressure | ASTM A216 WCC | GP280GH (1.0625) | SCPH2 (Low-C / High-Mn) | ZG275-485 | C ≤0.25%, Mn ≤1.20%; Yield ≥275 MPa, UTS 485–655 MPa |
| Sub-Zero Low Temperature (-46°C) | ASTM A352 LCB / LCC | G20Mn5 (1.6220) | JIS G5152 SCPL1 | GB/T 35083 ZG20Mn | Quenched & Tempered (or Normalized + Tempered); Charpy impact tested at -46°C |
| High-Temp Creep Service (Cr-Mo) | ASTM A217 WC6 / WC9 | G17CrMo5-5 (1.7357) / G12CrMo9-10 (1.7379) | SCPH21 / SCPH32 | ZG15Cr1Mo1 / ZG15Cr2Mo1 | Normalized & Tempered; Yield ≥275 MPa, service up to 593°C |
| High-Strength Structural Alloy | ASTM A148 Gr 90-60 / 105-85 | G42CrMo4 (1.7225 / 1.7231) | JIS G5111 SCCrM3 | GB/T 7659 ZG42CrMo | Quenched & Tempered; Yield 415–585 MPa, UTS 620–725 MPa |
| Work-Hardening Impact Wear | ASTM A128 Gr B-2 (Hadfield Mn) | GX120Mn12 (1.3401) | JIS G5131 SCMnH11 | GB/T 5680 ZGMn13-2 | 1,050°C Water-Tougghened Austenitic; work-hardens from ~200 HB to 500+ HB under impact |
3. Gray Cast Iron & Ductile Iron Cross-Reference Table (ASTM A48 & A536 vs EN 1561 / 1563 / DIN GG & GGG vs JIS vs GB/T)
For gearbox housings, pump casings, and automotive suspension brackets, buyers frequently convert German DIN GG20 / GG25 and GGG40 / GGG50 into ASTM A48 and ASTM A536:
| Iron Type | ASTM Grade | EN 1561 / 1563 | Legacy DIN 1691 / 1693 | JIS G5501 / G5502 | GB/T 9439 / 1348 | Min Tensile / Yield / Elongation & Matrix |
|---|---|---|---|---|---|---|
| Gray Iron | ASTM A48 Class 20 / 25 | EN-GJL-150 | GG15 | FC150 | HT150 | UTS ≥150 MPa (no yield point); Ferritic-Pearlitic, 130–180 HB |
| Gray Iron | ASTM A48 Class 30 | EN-GJL-200 | GG20 | FC200 | HT200 | UTS ≥200 MPa; Pearlitic-Ferritic, 150–210 HB, high vibration damping |
| Gray Iron | ASTM A48 Class 35 (Class 40) | EN-GJL-250 | GG25 | FC250 | HT250 | UTS ≥250 MPa (36.2 ksi); Fine Pearlitic + Type A Graphite, 190–240 HB |
| Gray Iron | ASTM A48 Class 40 / 45 | EN-GJL-300 | GG30 | FC300 | HT300 | UTS ≥300 MPa; Inoculated Pearlitic, heavy machine beds & cylinders |
| Ductile Iron | ASTM A536 Gr 60-40-18 | EN-GJS-400-15 (400-18) | GGG40 | FCD400-15 | QT400-15 (QT400-18) | UTS ≥414 MPa, Yield ≥276 MPa, Elong ≥18%; Ferritic, shock-resistant |
| Ductile Iron | ASTM A536 Gr 65-45-12 | EN-GJS-450-10 | GGG45 (Intermediate) | FCD450-10 | QT450-10 | UTS ≥448 MPa, Yield ≥310 MPa, Elong ≥12%; Ferritic-Pearlitic balance |
| Ductile Iron | ASTM A536 Gr 80-55-06 | EN-GJS-500-7 | GGG50 | FCD500-7 | QT500-7 | UTS ≥552 MPa, Yield ≥379 MPa, Elong ≥6%; Pearlitic-Ferritic, 170–230 HB |
| Ductile Iron | ASTM A536 Gr 100-70-03 | EN-GJS-700-2 | GGG70 | FCD700-2 | QT700-2 | UTS ≥689 MPa, Yield ≥483 MPa, Elong ≥3%; Pearlitic, high wear strength |
4. Three Critical Engineering Traps When Substituting International Grades
- Dual-Certification Chemistry Window (e.g., WCB / 1.0619 & CF8M / 1.4408): If your assembly is sold into both North America (ASME) and the European Union (PED 2014/68/EU), specify dual-certified melt chemistry on the purchase order. At YCUMETAL, we melt WCB/1.0619 heats to C ≤0.22%, Mn 0.70–1.15% and verify impact toughness on keel blocks so a single heat satisfies both ASTM A216 WCB and EN 10213 GP240GH.
- Wall-Thickness Section Sensitivity in Cast Iron (GG25 vs ASTM A48 Class 35): EN 1561 EN-GJL-250 requires 250 MPa (36.25 ksi) in a 30 mm cast bar. In ASTM A48, Class 35 guarantees 35 ksi (241 MPa) in the selected test bar (Type A, B, or C). If your drawing specifies EN-GJL-250 on a thick-walled casting (>25 mm), specify ASTM A48 Class 35B or Class 40B and define the exact test bar diameter.
- As-Cast Dimensional Tolerance vs CNC Datum Strategy: Never assume a material substitution leaves dimensional tolerances unchanged. Stainless steels (ASTM A351) have higher solidification shrinkage (~2.0–2.5%) than gray iron (~1.0%). Review our ISO 8062 CT4–CT12 Casting Tolerance & RMA Chart and Machining Allowance Guide before freezing tooling.
Frequently Asked Questions (FAQ)
Is ASTM A216 WCB directly equivalent to EN 1.0619 (GP240GH)?
They are functional equivalents for cast carbon steel pressure parts, but not automatic 1:1 drop-ins without melt control. ASTM A216 WCB permits up to 0.30% carbon with no mandatory impact test, whereas EN 10213 GP240GH (1.0619) caps carbon at 0.23% and requires a minimum 27 J Charpy V-notch impact test at +20°C. YCUMETAL pours dual-compliant heats (C ≤0.22%) verified by Spectro optical emission spectrometry to satisfy both standards.
What is the ASTM equivalent of DIN GG25 (EN-GJL-250) and GGG50 (EN-GJS-500-7)?
DIN GG25 (EN-GJL-250) corresponds to ASTM A48 Class 35 (241 MPa minimum tensile) or Class 40 (276 MPa) depending on wall thickness and test bar size, and GB/T 9439 HT250. DIN GGG50 (EN-GJS-500-7) corresponds to ASTM A536 Grade 80-55-06 (552 MPa tensile, 379 MPa yield, 6% elongation) or Grade 65-45-12 when higher elongation is prioritized over tensile strength.
Can YCUMETAL supply EN 10204 3.1 material certificates and CMM/CT inspection reports?
Yes. Every production batch from our 34,000㎡ Pingdu foundry includes heat-traceable Spectro chemical analysis, mechanical test bar results (tensile, yield, elongation, hardness), Hexagon CMM dimensional reports on machined datums (±0.025 mm), and optional Nikon XTH 320 industrial CT scanning for internal porosity verification.