7140 (United States / SAE) Material Properties

Material group: Nonferrous Alloys / Aluminium
Country/Standard: United States / SAE

Data updates

Latest Update: 2025-01
Total number of updates: 12
Update History:
2024-08 2023-11 2023-05 2023-01 2021-02 2019-04 2018-05 2018-03 2018-02 2017-11 2017-10

Mechanical Properties

Temperature

0 - 30°C
PROPERTY / VALUE
Yield Strength, Rp0.2 399.8 MPa view details
Compression Yield Strength val1
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MPa view details
Tensile Strength 461.9 MPa view details
Elongation, A 2 % view details
Yield Strength, Rp0.2 58 ksi view details
Compression Yield Strength val1
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ksi view details
Tensile Strength 67 ksi view details
Elongation, A 2 % view details

Physical Properties

Temperature

0 - 30°C
30 - 100°C
100 - 300°C
PROPERTY / VALUE
Modulus of Elasticity 69 — 79 GPa view details
Compression Modulus 72 GPa view details
Shear Modulus val1
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GPa view details
Density val1
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kg/dm³ view details
Poisson Coefficient val1
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view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°C view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°C view details
Heat Capacity val1
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J/(kg∙°C) view details
Heat Capacity val1
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J/(kg∙°C) view details
Electrical Resistivity ≤ 0.045 Ω∙mm²/m view details
Modulus of Elasticity 10 E+03 — 11.5 E+03 ksi view details
Compression Modulus 10.4 E+03 ksi view details
Shear Modulus val1
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ksi view details
Density val1
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lb/in³ view details
Poisson Coefficient val1
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view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°F view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°F view details
Heat Capacity val1
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BTU/(lb∙°F) view details
Heat Capacity val1
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BTU/(lb∙°F) view details
Electrical Resistivity ≤ 75.4 E-06 Ω∙circular·mil/ft view details

Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
Al
VALUE
Remainder
UNIT
%
CAS NUMBER
7429-90-5
CRITERIA
Cr
VALUE
≤ 0.04
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Cu
VALUE
1.3 – 2.3
UNIT
%
CAS NUMBER
7440-50-8
CRITERIA
Fe
VALUE
val1
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UNIT
%
CAS NUMBER
7439-89-6
CRITERIA
Mg
VALUE
val1
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UNIT
%
CAS NUMBER
7439-95-4
CRITERIA
Mn
VALUE
val1
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UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Other each
VALUE
val1
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UNIT
%
CAS NUMBER
CRITERIA
Other total
VALUE
val1
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UNIT
%
CAS NUMBER
CRITERIA
Si
VALUE
val1
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UNIT
%
CAS NUMBER
7440-21-3
CRITERIA
Ti
VALUE
val1
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UNIT
%
CAS NUMBER
7440-32-6
CRITERIA
Zn
VALUE
val1
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UNIT
%
CAS NUMBER
7440-66-6
CRITERIA
Zr
VALUE
val1
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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

Heat Treatments

  • Solution heat treat at 477 ± 6°C (890 ± 10°F);<br />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.
  • <b>Solution heat treatment</b>: 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.<br>Overageing shall be performed at a specific temperature and time as required.