EN AW-1100 vs EN AW-1050A: Both commercially pure Al — virtually identical
EN AW-1100 vs EN AW-1050A
Side-by-side chemical composition and mechanical property comparison.
Overview
EN AW-1100
3.0257
Commercially pure aluminum (99.0% min Al). Excellent corrosion resistance, highest thermal and electrical conductivity among common alloys, and outstanding formability. Very low strength — not for structural applications. Used for chemical equipment, heat exchangers, fin stock, name plates, reflectors, and food/pharmaceutical packaging.
EN AW-1050A
3.0255
Commercially pure aluminium (99.5% min Al). Excellent corrosion resistance, thermal and electrical conductivity. Very soft and easily formed. Used for chemical plant equipment, food industry, reflectors, heat exchangers, electrical conductors, and decorative trim.
| EN AW-1100 | EN AW-1050A | |
|---|---|---|
| Material Number | 3.0257 | 3.0255 |
| Category | Aluminum | Aluminum |
| Standard | EN 573-3 | EN 573-3 |
Chemical composition (wt%)
| Element | EN AW-1100 | EN AW-1050A | Overlap |
|---|---|---|---|
| Si | — | 0–0.25% | — |
| Mn | 0–0.05% | 0–0.05% | OK |
| Cu | 0.05–0.2% | 0–0.05% | Partial |
| Al | ≥ 99% | ≥ 99.5% | No overlap |
Mechanical properties
| Property | EN AW-1100 | EN AW-1050A | Unit |
|---|---|---|---|
| tensile_strength | 75–105 | 65–95 | MPa |
| yield_strength | 25–35 | ≥ 20 | MPa |
| elongation | 35–45 | ≥ 23 | % |
Compatibility Assessment
1050A is 99.5% pure vs 1100's 99.0% pure. 1050A has slightly higher conductivity; 1100 has marginally higher strength from trace Cu. Both excellent corrosion resistance and formability. Choose either based on regional availability — 1050A more common in EU, 1100 in US.
Frequently Asked Questions
Is EN AW-1100 the same as EN AW-1050A?
EN AW-1100 and EN AW-1050A have a 90% composition overlap. Both commercially pure Al — virtually identical
Can I replace EN AW-1100 with EN AW-1050A?
In many cases, yes. The compositions overlap significantly (90%). However, always verify mechanical property requirements and heat treatment compatibility for your specific application.
What is the difference between EN AW-1100 and EN AW-1050A?
The main differences are in the following elements: Cu, Al. EN AW-1100 is a Aluminum grade, while EN AW-1050A is a Aluminum grade.
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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.