Comparative Classifications

Organizations

ASTM Specification

A439

ASME Specification

SA439

UNS Number (Cast)

UNS Number (Wrought)

AISI

SAE

Common Name (Wrought)

Alloy Specification

Datasheet.

Chemical Composition

Carbon:
2.9% Max
Manganese:
1.8 - 2.4%
Silicon:
1 - 3%
Phosphorus:
0.08% Max
Sulfur:
Chromium:
0.5% Max
Nickel:
21 - 24%
Molybdenum:
Nitrogen:
Nitrogen + Carbon:
Vanadium:
Tungsten:
Aluminum:
Titanium:
Copper:
Columbium (Niobium):
Barium:
Boron:
Zirconium:
Cerium + Lanthanum:
Iron:
Residual Elements:

Physical Properties

Tensile Strength:
58000 ksi Min
Yield Strength:
28000 ksi Min
Elongation at 2 in.:
20% Min
Reduction of Area:

Frequently Asked Questions

Answers
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