316 Stainless Steel Casting Alloy (CF8M)

Designations: CF8M · UNS J92900 · wrought equivalent 316 (UNS S31600)316 stainless steel castings are made to cast grade CF8M, the casting counterpart of wrought 316. Its molybdenum gives better resistance to pitting and chlorides than 304 (CF8), which is why CF8M is the standard choice for pump, valve and fitting bodies in water, food and chemical service. CF8M is covered by ASTM A351, A743 and A744. Kormax casts CF8M to order for customers in the United States and Canada.

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Chemical Composition

316 Stainless Steel Casting Alloy (CF8M) — chemical composition, % by weight
Element	Symbol	Range / limit %
Carbon	C	0.08 max
Manganese	Mn	1.50 max
Silicon	Si	1.50 max
Phosphorus	P	0.040 max
Sulfur	S	0.040 max
Chromium	Cr	18.0–21.0
Nickel	Ni	9.0–12.0
Molybdenum	Mo	2.0–3.0
Iron	Fe	Balance

Mechanical Properties

316 Stainless Steel Casting Alloy (CF8M) — mechanical properties
Property	Metric	Imperial
Tensile Strength, min	485 MPa	70 ksi
Yield Strength, min	205 MPa	30 ksi
Elongation, min	30%	30%

Composition and mechanical properties to ASTM A351 Grade CF8M. Wrought 316 (ASTM A240, UNS S31600) differs slightly in chemistry and strength.

Comparable and Related Specifications

The standards and grades below may have similar composition, properties or applications, but they should not be treated as direct equivalents without review. Chemistry, heat treatment, toughness requirements and testing provisions can differ between standards.