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