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Valve Material Reference

ASTM A351 CF3M Valve

SS 316L Cast (CF3M)

ASTM A351 CF3M is the low-carbon cast equivalent of SS 316L.

Form

Cast

Max Temp

+370°C (lower than CF8M due to lower carbon strength)

Min Temp

−254°C (cryogenic)

Category

Stainless Steel

Chemical Composition — ASTM A351 CF3M

C ≤ 0.03%, Cr 17–21%, Ni 9–13%, Mo 2–3%. Low-carbon austenitic.

Temperature Range

−254°C to +370°C (max continuous; sensitisation avoided with low C)

Maximum Temperature

+370°C (lower than CF8M due to lower carbon strength)

Minimum Temperature

−254°C (cryogenic)

Equivalent Grades — ASTM A351 CF3M

StandardEquivalent Grade
ASTM wrought equiv.A240 316L / A276 316L
EN1.4409 (GX2CrNiMo19-11-2)
JISSCS16

Suitable Services

Pharmaceutical — Purified Water (PW), Water for Injection (WFI)

Biotech and biopharma clean-in-place (CIP) and steam-in-place (SIP)

Cryogenic — LNG, liquid oxygen, liquid nitrogen, liquid argon

Food and beverage

Fine chemicals and specialty solvents

Not Suitable For

High-temperature service (lower strength than CF8M above 371°C)

Same corrosion limitations as CF8M: HCl, concentrated H₂SO₄

Valve Body Applications

Pharmaceutical valve bodies (PW, WFI, CIP)

Food-grade valve bodies

Cryogenic valve bodies (LNG, LOX, LAr)

Fine chemical and specialty chemical valves

Trim Applications

All-CF3M construction for high-purity and pharmaceutical service

PTFE seats in food/pharma ball valves

Typical Valve Types in ASTM A351 CF3M

Sanitary diaphragm valves for pharmaceutical

Cryogenic gate and globe valves (LNG service)

Sanitary ball valves with PTFE seats

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We supply ASTM A351 CF3M (SS 316L Cast (CF3M)) gate valves, globe valves, ball valves, check valves, and more. Full certification documentation — EN 10204 3.1/3.2 MTCs, hydro test certs — as standard.