EN AW-6063
3.3206The most common extrusion alloy worldwide. Excellent surface finish, good corrosion resistance, and exceptional extrudability. The standard choice for architectural profiles (window frames, curtain walls, railings), heat sinks, and electrical enclosures.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | AA | USA | AA 6063 | A96063 | REF |
| 🇪🇺 | EN | Europe | EN AW-6063 / AlMg0.7Si | 3.3206 | 100% |
| 🇯🇵 | JIS | Japan | A6063 | — | 98% |
| 🇬🇧 | BS | United Kingdom | HE9 (old) | — | 95% |
Sources: ASTM B221, EN 573-3, JIS H4100, BS 1474
Chemical composition comparison (wt%)
Side-by-side: EN AW-6063 (EN) (EN 573-3) vs A6063 (JIS)
| Element | EN AW-6063 (EN) | A6063 (JIS) | Overlap |
|---|---|---|---|
| Si | 0.2–0.6% | — | — |
| Mn | 0–0.1% | — | — |
| Cr | 0–0.1% | — | — |
| Cu | 0–0.1% | — | — |
| Ti | 0–0.1% | — | — |
| Fe | 0–0.35% | — | — |
| Mg | 0.45–0.9% | — | — |
| Zn | 0–0.1% | — | — |
Mechanical properties
T6 (solution treated + artificially aged)
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | ≥ 215 | MPa |
| Yield Strength | ≥ 170 | MPa |
| Elongation | ≥ 8 | % |
| Hardness HB | 70–80 | HB |
| Elastic Modulus | ≥ 69 | GPa |
| Density | ≥ 2.7 | g/cm3 |
Heat treatment
| Process | Temperature | Medium | Holding Time | Notes |
|---|---|---|---|---|
| solution_treating | 500–530 °C | water | 30-60 min | Can often be press-quenched (T5 temper) |
| artificial_aging | 175–185 °C | air | 6-12 hours | T6 temper: 180°C/8h typical |
Compatibility verdict
EN AW-6063 and A6063: 98% composition match
Close equivalents but NOT identical.
Related materials
EN AW-6082
3.2315High-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
3.3547The 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-2024
3.1355Classic high-strength aerospace aluminium alloy (Al-Cu-Mg). Excellent fatigue resistance — the standard choice for aircraft fuselage skins and wing tension members. Poor corrosion resistance and weldability. Often supplied with Alclad cladding for corrosion protection. In use since 1931.
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