Generic 7A99 Aluminium Alloys

Material group: Nonferrous Alloys / Aluminium Alloys
Country / Standard: Generic

Data updates

Latest Update: 2023-02
Total number of updates: 1
Update History

This material has 22 properties — only a subset is shown here.

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Generic 7A99 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
Be
VALUE
≤ 0.002
UNIT
%
CAS NUMBER
7440-41-7
CRITERIA
Cu
VALUE
1.4 – 2.0
UNIT
%
CAS NUMBER
7440-50-8
CRITERIA
Fe
VALUE
≤ 0.08
UNIT
%
CAS NUMBER
7439-89-6
CRITERIA
Mg
VALUE
val1
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UNIT
%
CAS NUMBER
7439-95-4
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

Influence of Deep Cryogenic Treatment on Microstructure and Properties of 7A99 Ultra-High Strength Aluminum Alloy, W. Gao, X. Wang, J. Chen, C. Ban, J. Cui, Z. Lu, MDPI, 2019

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Generic 7A99 Physical Properties


Temperature

PROPERTY / VALUE
Modulus of Elasticity
69 — 79 GPa
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Density
2.6 — 2.9 kg/dm³
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Poisson Coefficient
0.33
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This material has 22 properties — only a subset is shown here.

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Generic 7A99 Heat Treatments


  • Processing parameters of the T6-DCT treatment:
    Quenching: at 473°C for 4h
    Aging treatment:
    Cycle 1: at -120°C for 0.1h; at 120°C for 2h
    Cycle 2: at -120°C for 0.1h; at 120°C for 4h
    Cycle 3: at -120°C for 0.1h; at 120°C for 4h
    Subsequent aging: at 120°C for 14h

Generic 7A99 Mechanical Properties


Temperature

PROPERTY / VALUE
Tensile Strength
699 — 705 MPa
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Elongation, A
11 — 14 %
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Yield Strength, Rp0.2
659 — 678 MPa
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  • -Cross References

  • 8Composition
  • 6Mechanical Properties
  • 3Physical Properties
  • 1Heat Treatment
  • 4Metallography
  • -Machinability

  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep

  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology

  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation

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