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Wrought aluminum-zinc-magnesium alloy 7075

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Wrought aluminum-zinc-magnesium alloy 7075
Chemical composition: Cu=1.6%, Mg=2.5%, Cr=0.23%, Zn=5.6%, Al balance
Property Value in metric unit Value in US unit
Density 2.81 *10³ kg/m³ 175 lb/ft³
Modulus of elasticity 72 GPa 10400 ksi
Thermal expansion (20 ºC) 23.6*10-6 ºCˉ¹ 13.1*10-6 in/(in* ºF)
Specific heat capacity 960 J/(kg*K) 0.229 BTU/(lb*ºF)
Thermal conductivity 173 W/(m*K) 1200 BTU*in/(hr*ft²*ºF)
Electric resistivity 3.8*10-8 Ohm*m 3.8*10-6 Ohm*cm
Tensile strength (annealed) 228 MPa 33000 psi
Yield strength (annealed) 103 MPa 15000 psi
Elongation (annealed) 17 % 17 %
Shear strength (annealed) 152 MPa 22000 psi
Hardness (annealed) 60 HB 60 HB
Tensile strength (T6, T651) 572 MPa 83000 psi
Yield strength (T6, T651) 503 MPa 73000 psi
Elongation (T6, T651) 11 % 11 %
Shear strength (T6, T651) 331 MPa 48000 psi
Fatigue strength (T6, T651) 159 MPa 23150 psi
Hardness (T6, T651) 150 HB 150 HB
Annealing temperature 413 ºC 775 ºF
Solution temperature 482 ºC 900 ºF
Aging temperature 121 ºC 250 ºF

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