EN AW-5083 vs EN AW-6082: Different aluminium alloy families — heat-treatable vs non-heat-treatable
EN AW-5083 vs EN AW-6082
Side-by-side chemical composition and mechanical property comparison.
Overview
EN AW-5083
3.3547
The highest-strength non-heat-treatable aluminium alloy. Excellent corrosion resistance (especially seawater), good weldability. Standard alloy for shipbuilding, offshore, pressure vessels, cryogenic applications, and armour plate. Not for continuous service above 65°C under stress (SCC risk).
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-5083 | EN AW-6082 | |
|---|---|---|
| Material Number | 3.3547 | 3.2315 |
| Category | Aluminum | Aluminum |
| Standard | EN 573-3 | EN 573-3 |
Chemical composition (wt%)
| Element | EN AW-5083 | EN AW-6082 | Overlap |
|---|---|---|---|
| Si | 0–0.4% | 0.7–1.3% | No overlap |
| Mn | 0.4–1% | 0.4–1% | OK |
| Cr | 0.05–0.25% | 0–0.25% | OK |
| Cu | 0–0.1% | 0–0.1% | OK |
Mechanical properties
| Property | EN AW-5083 | EN AW-6082 | Unit |
|---|---|---|---|
| tensile_strength | 275–350 | ≥ 310 | MPa |
| yield_strength | ≥ 125 | ≥ 260 | MPa |
| elongation | ≥ 12 | ≥ 8 | % |
Compatibility Assessment
6082 is Al-Mg-Si (heat-treatable, higher strength in T6). 5083 is Al-Mg (non-heat-treatable, superior corrosion/welding). Choose 6082 for structural strength, 5083 for marine/welded applications.
Frequently Asked Questions
Is EN AW-5083 the same as EN AW-6082?
EN AW-5083 and EN AW-6082 have a 30% composition overlap. Different aluminium alloy families — heat-treatable vs non-heat-treatable
Can I replace EN AW-5083 with EN AW-6082?
Generally not recommended. The compositions differ significantly (30% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between EN AW-5083 and EN AW-6082?
The main differences are in the following elements: Si, Mg. EN AW-5083 is a Aluminum grade, while EN AW-6082 is a Aluminum grade.
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