7075 Aluminum Alloy
Aluminum 7075 (EN AW-7075 / 3.4365) is a high-strength aluminum alloy primarily strengthened with zinc, magnesium, and copper. It offers an excellent strength-to-weight ratio, good machinability, and high fatigue strength
Available Form
Round Bar
Custom Diameter & Length
Flat Bar
Custom Thickness, Width & Length
Square Bar
Custom Width & Length
Steel Plate
Custom Thickness, Width & Length
Steel Grade Comparison
| W-Nr | EN | AISI | JIS |
| 3.4365 | AW-7075 | AA 7075 | A7075 |
Chemical Composition(wt%)
| Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | Others | Al |
| ≤0.40 | ≤0.50 | 1.2~2.0 | ≤0.30 | 2.1~2.9 | 0.18~0.28 | 5.1~6.1 | ≤0.20 | ≤ 0.15 | Balance |
Physical Properties
Density: 2.81 g/cm³
Modulus of Elasticity: 71.7 GPa
Thermal Conductivity: 130 W/(m.K)
| Temperature | 20-100°C | 2-200°C | 2-300°C |
| Coefficient of Thermal Expansion (×10-6 /K) | 24.3 | 24.3 | 25.2 |
Heat Treatment Process
Solution Treatment: Heat to 465~480°C until the whole section reaches temperature. Then quench in water immediately.
Annealing: Heat to 290~320°C, hold well at temperature, and then let it cool slowly.
Artificial Aging (T6): Heat uniformly to 120~125°C, hold for 24 hours, and then allow it to cool in still air.
Application Fields
Aircraft components, instrument shafts and gears, missile parts, throttle valve components, turbines, keys, etc.
Disclaimer: the information and data presented herein are typical values for reference and are not intended as warranties to readers.