Engineering Reference
Valve Body Materials
ASTM material specifications for industrial valve bodies, trim, and components. Temperature ratings, equivalent grades, service compatibility, and valve type recommendations.
Carbon Steel
ASTM A216 WCB
Carbon Steel WCB
ASTM A216 Grade WCB is the most widely used material for cast valve bodies in general industrial service.
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ASTM A105
Forged Carbon Steel A105
ASTM A105 is the standard specification for forged carbon steel piping components including valve bodies, flanges, fittings, and bonnets.
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Stainless Steel
ASTM A351 CF8M
SS 316 Cast (CF8M)
ASTM A351 CF8M is the cast austenitic stainless steel grade equivalent to wrought SS 316.
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ASTM A182 F316
Forged SS 316 (F316)
ASTM A182 F316 is the forged austenitic stainless steel specification for small-bore valve bodies, flanges, and fittings in SS 316 composition.
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ASTM A351 CF3M
SS 316L Cast (CF3M)
ASTM A351 CF3M is the low-carbon cast equivalent of SS 316L.
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Alloy & Chrome-Moly Steel
ASTM A217 WC9
Chrome-Moly WC9 (2.25Cr-1Mo)
ASTM A217 WC9 is a cast chrome-moly alloy (2.
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ASTM A182 F91
P91 Chrome-Moly (9Cr-1Mo-V)
ASTM A182 F91 is the forged 9Cr-1Mo-V alloy specification for ultra-high-temperature steam service.
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Duplex Stainless Steel
ASTM A995 CD4MCu / A890 4A
Duplex SS Cast (CD4MCu)
ASTM A995 CD4MCu (also referred to as A890 Grade 4A) is the cast duplex stainless steel specification equivalent to UNS S31803 / S32205 (Duplex 2205).
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ASTM A182 F51
Forged Duplex 2205 (F51)
ASTM A182 F51 is the forged duplex stainless steel specification for UNS S31803/S32205 (Duplex 2205) composition.
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Nickel Alloys (Hastelloy, Inconel)
Quick Material Selection Reference
| Material | Max Temp | Corrosion | Typical Service | ASME Classes |
|---|---|---|---|---|
| A216 WCB | 538°C | Low | Steam, water, oil, gas | 150–2500 |
| A105 | 538°C | Low | High-press. small bore, forged | 150–2500 |
| CF8M (SS 316) | 454°C | Medium-High | Chemical, seawater, pharma | 150–1500 |
| CF3M (SS 316L) | 370°C | Medium-High | Pharma, food, cryogenic | 150–600 |
| WC9 (2.25Cr-1Mo) | 593°C | Low | HP steam, power plants | 300–2500 |
| F91 (9Cr-1Mo-V) | 650°C | Low | Supercritical steam, USC plants | 900–2500 |
| CD4MCu (Duplex) | 300°C | Very High | Seawater, brine, NACE | 150–900 |
| CW6MC (Alloy 625) | 540°C | Extreme | HCl, H₂SO₄, aggressive acid | 150–900 |
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