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Test coupon from A439 D-3A melt.

A439 D-3A

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Comparative Classifications

ASTM Specification

A439

ASME Specification

SA439

UNS (Cast)

UNS (Wrought)

SAE

AISI

Carbon:

2.6% Max

Silicon:

1 - 2.8%

Phosphorus:

0.08% Max

Manganese:

1% Max

Sulfur:

Chromium:

1 - 1.5%

Nickel:

28 - 32%

Molybdenum:

Nitrogen:

Nitrogen + Carbon:

Vanadium:

Tungsten:

Aluminum

Titanium:

Copper:

Columbium:

Barium:

Boron:

Zirconium:

Cerium + Lanthanum:

Iron:

Residual Elements:

Tensile Strength:

55000 ksi Min

Elongation at 2 in:

10% Min

Reduction of Area:

Yield Strength:

30000 ksi Min

Chemical Composition

Physical Properties

Alloy Specification

Related Alloys

Frequently Asked Questions