A351 CG8M

ASTM

A351 CG8M

ASME

SA351 CG8M

SAE

317

UNS -Cast

J93000

UNS -Wrought

S31700

Overview

CG8M is an austenitic stainless steel casting alloy specified under ASTM A351/A351M for pressure-containing components such as valves, flanges, and fittings. It is the cast equivalent of wrought grade 316 stainless steel and is characterized by excellent corrosion resistance and good mechanical properties. As a molybdenum-bearing grade, CG8M offers improved resistance to pitting and crevice corrosion, especially in chloride-containing environments. This alloy is particularly suited for applications requiring high corrosion resistance and moderate strength, such as chemical processing, marine environments, and pulp and paper industries.

Chemical Composition

Carbon

0.08% Max

0.08% Max

0.08% Max

Manganese

1.50% Max

Silicon

1.50% Max

Phosphorus

0.04% Max

Sulfur

0.04% Max

Chromium

18.00 - 21.00%

Nickel

9.00 - 13.00%

Molybdenum

3.00 - 4.00%

Mechanical Properties

Yield Strength

35 ksi Min

Tensile Strength

75 ksi Min

Elongation at 2 in

25% Min

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© Alloy Casting Industries Ltd 2025

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© Alloy Casting Industries Ltd 2025

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© Alloy Casting Industries Ltd 2025