Chemical Composition Base Element Fe (Iron) Al (Aluminum) 0.15 to 0.3 % C (Carbon) 0.03 % Fe (Iron) 71.5 to 73.5 % (estimate) Nb (Niobium) 0.5 % (maximum) Ni (Nickel) 25 to 26 % Ti (Titanium) 1.3 to 1.6 % Zr (Zirconium) 0.02 % Balance Fe (Iron) Composition Note Fe is listed as a Balance element for this material, but its % value is not listed in the specification. The value shown is a calculated one. Mechanical Properties Yield Strength 3.05e7 to 3.55e7 lbf/ft^2 Ultimate Tensile Strength 3.45e7 to 3.82e7 lbf/ft^2 Elongation 3 to 5 % strain Other Information Material Class Ferrous Alloy Country USA Description Heat treated: 240,000-265,000 TS; 212,000-246,000 YS; 3-5 El. For rocket motor cases, airframes, airborne equipment, large machinery parts, bolts, cryogenic equipment, high temperature equipment. Maraging steel, shock resistant. Designation ALMAR 25 Specification Type Manufacturer's Specification Specification Status Obsolete Source Woldman's Engineering Alloys 9th ed. J. Frick Editor, ASM International 2000 Available forms Wrought Similar Alloys Click here to find similar alloys Links Organizations AL Tech Specialty Steel Corp.
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Chemical Composition

Fe (Iron)

0.15 to 0.3

C (Carbon)

0.03

Fe (Iron)

71.5 to 73.5

% (estimate)

Nb (Niobium)

0.5

% (maximum)

Ni (Nickel)

25 to 26

Ti (Titanium)

1.3 to 1.6

Zr (Zirconium)

0.02

Balance

Fe (Iron)

Composition Note

Fe is listed as a Balance element for this material, but its % value is not listed in the specification. The value shown is a calculated one.

Mechanical Properties

Yield Strength

3.05e7 to 3.55e7

lbf/ft^2

Ultimate Tensile Strength

3.45e7 to 3.82e7

lbf/ft^2

Elongation

3 to 5

% strain

Other Information

Material Class

Ferrous Alloy

Country

USA

Description

Heat treated: 240,000-265,000 TS; 212,000-246,000 YS; 3-5 El. For rocket motor cases, airframes, airborne equipment, large machinery parts, bolts, cryogenic equipment, high temperature equipment. Maraging steel, shock resistant.

Designation

ALMAR 25

Specification Type

Manufacturer's Specification

Specification Status

Obsolete

Source

Woldman's Engineering Alloys 9th ed. J. Frick Editor, ASM International 2000

Available forms

Wrought

Similar Alloys

Click here to find similar alloys

Links

Organizations

AL Tech Specialty Steel Corp.

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