AlZnMgCu1.5 (EN AW 7075) – The high-performance alloy for maximum strength
The aluminum alloy AlZnMgCu1.5, also known as EN AW 7075, is one of the most powerful aluminum alloys worldwide. It combines extreme strength, excellent dimensional stability, good machinability, and low weight – ideal for applications with the highest mechanical requirements.
Originally developed for the aviation industry, EN AW 7075 is now used in many high-end sectors such as motorsports, mechanical engineering, and toolmaking.
What is EN AW 7075 / AlZnMgCu1.5?
This alloy belongs to the 7000 series – the aluminum-zinc-magnesium-copper alloys. It is hardenable, usually processed in the T6 or T651 state, where it achieves strength comparable to steel, with significantly lower weight.
EN AW 7075 is ideal for load-bearing, dynamically stressed components with tight tolerances.
Chemical Composition (typical)
| Element | Share (%) |
|---|---|
| Zinc (Zn) | 5.1 – 6.1 |
| Magnesium (Mg) | 2.1 – 2.9 |
| Copper (Cu) | 1.2 – 2.0 |
| Chromium (Cr) | 0.18 – 0.28 |
| Aluminum (Al) | Rest |
This composition gives the alloy its high strength and stability under load.
Properties & Advantages of EN AW 7075
- Extremely high strength – one of the strongest aluminum alloys
- Very good machinability – ideal for precision parts
- Low weight – perfect for lightweight construction applications
- Stable under high load – no permanent deformations
- Dimensional stability after machining – low distortions
- Limited weldability
- Moderate corrosion resistance – surface protection recommended
Mechanical Properties (T6/T651 condition)
| Property | Typical Value |
|---|---|
| Tensile strength | min. 550 N/mm² |
| Yield strength | approx. 450 N/mm² |
| Hardness | approx. 140 Brinell |
This combination of strength, hardness, and low weight is ideal for highly stressed constructions.
Typical Applications of AlZnMgCu1.5 (EN AW 7075)
This high-performance alloy is used in many high-tech areas:
Aerospace:
-
Structural components, wing components, landing gear
Motorsports & Vehicle Manufacturing:
-
Chassis parts, wheel suspensions, steering components
Mechanical & Tool Engineering:
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Fixtures, precision mounts, support systems
Drone & Light Aircraft Construction:
-
Load-bearing parts with minimal weight
Defense & Military Technology:
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Armor plates, frames, brackets
Comparison: EN AW 7075 vs. other aluminum alloys
| Feature | EN AW 7075 | EN AW 6082 | EN AW 6060 |
|---|---|---|---|
| Tensile Strength | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐ |
| Machinability | ⭐⭐⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐⭐ |
| Weldability | ⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐⭐ |
| Corrosion Protection | ⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐⭐ |
| Anodizing Capability | ⭐⭐ | ⭐⭐ | ⭐⭐⭐⭐ |
Conclusion: If strength is the most important criterion, there is no way around EN AW 7075.
EN AW 7075 at alu-verkauf.de – Products & Advantages
At alu-verkauf.de you will find high-quality products made of AlZnMgCu1.5, including:
- Precision milled aluminum plates – extremely dimensionally stable, stress-relieved
- Round and flat bars – ideal for turned and milled parts
- Custom-cut aluminum blanks – precise & individually configurable
- Pressed semi-finished products – for further technical processing
- Fast delivery
- Large selection of dimensions
- Directly configurable online
Conclusion: EN AW 7075 – Aluminum at the highest level
The aluminum alloy AlZnMgCu1.5 (EN AW 7075) offers maximum strength with minimum weight – ideal for demanding, load-bearing, and dynamically stressed components. In aviation, automotive engineering, and mechanical engineering, it is the standard for maximum performance.
