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Test coupon from A217 C12A melt.

A217 C12A

Alloy Steels

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Comparative Classifications

ASTM Specification

A217

ASME Specification

SA217

UNS (Cast)

J84090

UNS (Wrought)

SAE

AISI

Carbon:

0.08 - 0.12%

Silicon:

0.20 - 0.50%

Phosphorus:

0.025% Max

Manganese:

0.30 - 0.60%

Sulfur:

0.010% Max

Chromium:

8.00 - 9.50%

Nickel:

0.40% Max

Molybdenum:

0.85 - 1.05%

Nitrogen:

0.030 - 0.070%

Nitrogen + Carbon:

Vanadium:

0.18 - 0.25%

Tungsten:

Aluminum

0.02% Max

Titanium:

0.01% Max

Copper:

Columbium:

0.060 - 0.10%

Barium:

Boron:

Zirconium:

0.01% Max

Cerium + Lanthanum:

Iron:

Residual Elements:

Tensile Strength:

85 - 110 ksi

Elongation at 2 in:

18% Min

Reduction of Area:

45% Min

Yield Strength:

60 ksi Min

Chemical Composition

Physical Properties

Alloy Specification

Related Alloys

Frequently Asked Questions