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
| Element | Composition % |
|---|---|
| Silicon (Si) | 0.40 Max |
| Iron (Fe) | 0.50 Max |
| Copper (Cu) | 1.2 - 2.0 |
| Manganese (Mn) | 0.30 Max |
| Magnesium (Mg) | 2.1 - 2.9 |
| Chromium (Cr) | 0.18 - 0.28 |
| Zinc (Zn) | 5.1 - 6.1 |
| Titanium (Ti) | 0.20 Max |
| Other (Each) | 0.05 Max |
| Others (Total) | 0.15 Max |
| Aluminium (Al) | Remainder |
| Thickness (mm) | Tensile Strength Rm (MPa) | Proof Stress Rp0,2 (MPa min) | Elongation A50 (% min) | Hardness HBW |
|---|---|---|---|---|
| over 6.0 – 12.5 | 540 min | 460 | 8 | 160 |
| over 12.5 – 25.0 | 540 min | 470 | 6 (A) | 161 |
| over 25.0 – 50.0 | 530 min | 460 | 5 (A) | 158 |
| over 50.0 – 60.0 | 525 min | 440 | 4 (A) | 155 |
| over 60.0 – 80.0 | 495 min | 420 | 4 (A) | 147 |
| over 80.0 – 90.0 | 490 min | 390 | 4 (A) | 144 |
| over 90.0 – 100.0 | 460 min | 360 | 3 (A) | 135 |
| over 100.0 – 120.0 | 410 min | 300 | 2 (A) | 119 |
| over 120.0 – 150.0 | 360 min | 260 | 2 (A) | 104 |
| Mechanical properties are those specified by EN 485-2:2016 for alloy 7075 in T651 temper, for the sheet thicknesses we stock. Above 12,5 mm the standard specifies elongation as A rather than A50. Hardness is given in the standard for information only and is not a guaranteed minimum. Certificates to EN 10204-3.1 are available on request. | ||||
| 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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