EN AW-6082 vs EN AW-7075: Different aluminium families — aerospace vs structural
EN AW-6082 vs EN AW-7075
Side-by-side chemical composition and mechanical property comparison.
Overview
EN AW-6082
3.2315
High-strength structural aluminium alloy in the Al-Mg-Si family. One of the strongest 6xxx series alloys due to manganese addition. Replaced 6061 in many European applications. Used for trusses, bridges, cranes, transport, scaffolding, and marine applications. Heat treatable (T6/T651).
EN AW-7075
3.4365
The classic high-strength aerospace aluminium alloy. Al-Zn-Mg-Cu composition provides the highest strength of all common aluminium alloys in T6 temper. Poor weldability and limited corrosion resistance. Used for aircraft structures, M16 rifle receivers, rock climbing gear, and precision mold plates.
| EN AW-6082 | EN AW-7075 | |
|---|---|---|
| Material Number | 3.2315 | 3.4365 |
| Category | Aluminum | Aluminum |
| Standard | EN 573-3 | EN 573-3 |
Chemical composition (wt%)
| Element | EN AW-6082 | EN AW-7075 | Overlap |
|---|---|---|---|
| Si | 0.7–1.3% | 0–0.4% | No overlap |
| Mn | 0.4–1% | 0–0.3% | No overlap |
| Cr | 0–0.25% | 0.18–0.28% | Partial |
| Cu | 0–0.1% | 1.2–2% | No overlap |
Mechanical properties
| Property | EN AW-6082 | EN AW-7075 | Unit |
|---|---|---|---|
| tensile_strength | ≥ 310 | ≥ 540 | MPa |
| yield_strength | ≥ 260 | ≥ 470 | MPa |
| elongation | ≥ 8 | ≥ 7 | % |
Compatibility Assessment
7075 is Al-Zn-Mg-Cu (highest strength, poor weldability, SCC susceptible). 6082 is Al-Mg-Si (moderate strength, good weldability, excellent extrudability). Choose 7075 only where maximum strength is critical and welding is not required.
Frequently Asked Questions
Is EN AW-6082 the same as EN AW-7075?
EN AW-6082 and EN AW-7075 have a 25% composition overlap. Different aluminium families — aerospace vs structural
Can I replace EN AW-6082 with EN AW-7075?
Generally not recommended. The compositions differ significantly (25% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between EN AW-6082 and EN AW-7075?
The main differences are in the following elements: Si, Mn, Cr, Cu. EN AW-6082 is a Aluminum grade, while EN AW-7075 is a Aluminum grade.
Related Comparisons
View full data for each material:
Data provided for reference only. Always verify against the applicable specification for critical applications.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.