SAE 7140 Aluminium

Material group: Nonferrous Alloys / Aluminium / Aluminium Alloys

Country/Standard: United States / SAE

Data updates

Latest Update: 2026-03

Total number of updates: 14

Update History

2026-02 2025-01 2024-08 2023-11 2023-05 2023-01 2021-02 2019-04 2018-05 2018-03 2018-02 2017-11 2017-10

This material has 702 properties — only a subset is shown here.

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SAE 7140 Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

Remainder

UNIT

CAS NUMBER

7429-90-5

CRITERIA

VALUE

≤ 0.04

UNIT

CAS NUMBER

7440-47-3

CRITERIA

VALUE

1.3 – 2.3

UNIT

CAS NUMBER

7440-50-8

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7439-89-6

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7439-95-4

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7439-96-5

CRITERIA

Other each

VALUE

val1

UNIT

CAS NUMBER

CRITERIA

Other total

VALUE

val1

UNIT

CAS NUMBER

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-21-3

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-32-6

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-66-6

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-67-7

SAE AMS 4401C: 2024 / Aluminum Alloy, Plate (7140-T7451) 6.6Zn - 1.8Cu - 2.0Mg - 0.10Zr Solution Heat Treated, Stress Relieved and Overaged

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SAE 7140 Physical Properties

Temperature

0 - 30°C 30 - 100°C 100 - 300°C

PROPERTY / VALUE

Modulus of Elasticity

69 — 79 GPa

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Compression Modulus

72 GPa

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Shear Modulus

val1 GPa

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Density

val1 kg/dm³

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Poisson Coefficient

val1

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Electrical Resistivity

≤ 0.045 Ω∙mm²/m

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Electrical Conductivity

val1 S/m

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This material has 702 properties — only a subset is shown here.

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SAE 7140 Heat Treatments

Solution heat treat at 477 ± 6°C (890 ± 10°F);
Recommended aging practice: 121 ± 6°C (250 ± 10°F) for 6 to 12 hours followed by 154 ± 6°C (310 ± 10°F) for 20 to 30 hours to the T7451 temper.
Solution heat treatment: Heat to 477°C ± 6°C (890°F ± 10°F), hold for a time commensurate with product thickness, rapidly cool in a suitable quenching medium.
Overageing shall be performed at a specific temperature and time as required.

SAE 7140 Mechanical Properties

Temperature

0 - 30°C

PROPERTY / VALUE

Yield Strength, Rp0.2

358 MPa

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Compression Yield Strength

val1 MPa

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Tensile Strength

434 MPa

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Elongation, A

2 %

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7 Cross References

36 Composition
414 Mechanical Properties
25 Physical Properties
3 Heat Treatment
- Metallography
- Machinability

108 Stress-Strain
- Formability
- Fatigue
109 Fracture
- Creep

- Joints
- Coatings
- Dimensions
- Tribology

- Corrosion
- Ageing
- Weatherability
- Irradiation

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