A744 CG8M

ASTM

A744 CG8M

ASME

SA744 CG8M

Type

19Cr-11Ni-Mo

SAE

317

UNS -Cast

J93000

UNS -Wrought

S31700

Overview

CG8M is an austenitic stainless steel casting alloy specified by ASTM A744/A744M, intended for corrosion-resistant service in industrial applications. It is the cast equivalent of wrought 316 stainless steel and contains molybdenum to improve resistance to pitting, crevice corrosion, and chloride-induced attack. This alloy is commonly used in pump and valve components, pressure vessels, and fittings exposed to harsh chemical environments, including marine and chemical processing applications. CG8M provides a reliable combination of corrosion resistance, strength, and ductility, making it a preferred material for equipment operating in aggressive media.

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

Frequently Asked Questions

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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