to Wrought aluminum-zinc-magnesium alloys (7xxx)
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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 |