EN AW-3105 vs EN AW-3003: Both 3xxx Al-Mn alloys — 3003 has more Mn for slightly higher strength
EN AW-3105 vs EN AW-3003
Side-by-side chemical composition and mechanical property comparison.
Overview
EN AW-3105
3.0505
Al-Mn-Mg alloy with slightly higher strength than 3003. Good formability and corrosion resistance. Not heat-treatable. Commonly used for building products, mobile homes/trailers, bottle caps, and general sheet metal applications. Intermediate between 3003 and 5005 in the strength hierarchy.
EN AW-3003
3.0517
The most widely used manganese aluminium alloy. ~20% stronger than 1050A with similar formability and corrosion resistance. Non-heat-treatable. Used for heat exchangers, cooking utensils, pressure vessels, chemical equipment, and architectural trim.
| EN AW-3105 | EN AW-3003 | |
|---|---|---|
| Material Number | 3.0505 | 3.0517 |
| Category | Aluminum | Aluminum |
| Standard | EN 573-3 | EN 573-3 |
Chemical composition (wt%)
| Element | EN AW-3105 | EN AW-3003 | Overlap |
|---|---|---|---|
| Si | 0–0.6% | 0–0.6% | OK |
| Mn | 0.3–0.8% | 1–1.5% | No overlap |
| Cu | 0–0.3% | 0.05–0.2% | OK |
| Al | — | — | — |
Mechanical properties
| Property | EN AW-3105 | EN AW-3003 | Unit |
|---|---|---|---|
| tensile_strength | 145–185 | 95–135 | MPa |
| yield_strength | 115–160 | ≥ 35 | MPa |
| elongation | 5–10 | ≥ 23 | % |
Compatibility Assessment
3003 has higher Mn (1.0-1.5 vs 0.3-0.8%) giving ~10% more strength. 3105 adds Mg for improved corrosion resistance. Both non-heat-treatable with similar formability. Choose 3003 for heat exchangers; 3105 for building products and caps.
Frequently Asked Questions
Is EN AW-3105 the same as EN AW-3003?
EN AW-3105 and EN AW-3003 have a 80% composition overlap. Both 3xxx Al-Mn alloys — 3003 has more Mn for slightly higher strength
Can I replace EN AW-3105 with EN AW-3003?
In many cases, yes. The compositions overlap significantly (80%). However, always verify mechanical property requirements and heat treatment compatibility for your specific application.
What is the difference between EN AW-3105 and EN AW-3003?
The main differences are in the following elements: Mn. EN AW-3105 is a Aluminum grade, while EN AW-3003 is a Aluminum grade.
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