7010 Aluminum Alloy Plate

 

7010 Aluminium Alloy is a very high strength material with very high fatigue strength. Stress corrosion resistant is also a feature, but it is not suitable for use in elevated temperature service. 7010 aluminum is a 7000-series aluminum alloy: the main alloying addition is zinc and it is formulated for primary forming into wrought products. 7010 is the Aluminum Association (AA) designation for this material. In European standards, it will be given as EN AW-7010. AlZn6MgCu is the EN chemical designation. A97010 is the UNS number. Additionally, the British Standard (BS) designation is DTD5130.


 

Chemical Composition:

 

Chemical ElementsMetricEnglish
Aluminum, Al 87.8 - 90.6 %87.8 - 90.6 %
Chromium, Cr <= 0.05 %<= 0.05 %
Copper, Cu 1.5 - 2.0 %1.5 - 2.0 %
Iron, Fe <= 0.15 %<= 0.15 %
Magnesium, Mg 2.1 - 2.6 %2.1 - 2.6 %
Manganese, Mn <= 0.10 %<= 0.10 %
Nickel, Ni <= 0.05 %<= 0.05 %
Other, each <= 0.05 %<= 0.05 %
Other, total <= 0.15 %<= 0.15 %
Silicon, Si <= 0.12 %<= 0.12 %
Titanium, Ti <= 0.06 %<= 0.06 %
Zinc, Zn 5.7 - 6.7 %5.7 - 6.7 %
Zirconium, Zr 0.10 - 0.16 %0.10 - 0.16 %

 

Physical properties:


  • Density: 83
  • Modulus of elasticity in N/mm2:
    • - at 20°C:  71.5 x 103
  • Mean coefficient of expansion in m/m.°C:
    • - between 20°C and 100°C:          23.5 x 10-6
    • - between 20°C and 200°C:          24.4 x 10-6
    • - between 20°C and 300°C:          25.4 x 10-6
  • Thermal conductivity in m/m2.°C:
    • at 20°C: 154 (T74 condition)
  • Mean specific heat in J/g°C:
    • between 0°C and 100°C: 86
  • Electrical resistivity in μΩ.cm2/cm
    • at 20°C: 36 (T74 condition)

  • Electrical conductivity in S/m:
    • at 20°C: >23 x 106 (T4 condition)


Heat treatment:

 

  • Solution treatment
  • Water Quench
  • Age depending on properties required and the size of the
  • The over-aged T74 and T76 conditions are the most common and are defined in standard NF EN
  • Closed-die forgings can be stress relieved between solution treatment and
  • T7452 and T7652 stress relieved by compression before T74 over-aging, and T7454 and T7654 achieved by further cold closed-die forging, are the most common conditions. These are defined in Standard NF EN

 

Applications:

 

  • Closed-die forgings and large forged bars for the aerospace industry.
  • This alloy has been specifically designed for structural components subject to high fatigue stress and risk of corrosion.


 

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