Aluminium Alloy 7075 Datasheet

Aluminium Alloy 7075 is capable of high strength as developed by heat treating. It also has excellent properties at low temperatures. It is amongst the strongest aluminium alloy with comparable strength to steel

Applications for Aluminium Alloy 7075

  • Aircraft fittings
  • Aerospace and defence applications

Chemical Compositions of Aluminium Alloy 7075

Element Composition %
Silicon (Si) 0.10 - 0.40
Iron (Fe) 0.10 - 0.50
Copper (Cu) 1.2 - 2.0
Manganese (Mn) 0.05 - 0.30
Magnesium (Mg) 2.10 - 2.90
Zinc (Zn) 5.10 - 6.10
Chromium (Cr) 0.15 - 0.28
Titanium (Ti) 0.01 - 0.20
Gallium (Ga) 0.01 - 0.05
Vanadium (V) 0.01 - 0.06
Aluminium (Al) Balance

Mechanical Properties of Aluminium Alloy 7075 - T651

Property Value
Proof Stress 440 Min MPa
Tensile Strength 572 MPa
Elongation at 50 mm 4 Min %
Hardness Brinell 155 HB
Please note that Mechanical Properties shown are for T651 temper

Aluminium Alloy 7075 Weldability

Gas
Poor
Arc
Poor
Brazability
Poor
Resistance
Excellent

Aluminium Alloy 7075 Fabrication

Machinability
Good
Workability - Cold
Poor

Generic Physical Properties of Aluminium Alloy 7075

Property Value
Density 2.81 g/cm3
Melting Point 635°C
Thermal Expansion 23.6 ×10−6 /K
Modulus of Elasticity 72 GPa
Thermal Conductivity 130 W/m.K
Electrical Resistivity 0.0515 ×10−6Ω.m

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