EN AC-AlSi12(a)
EN AC-44200Eutectic aluminum-silicon casting alloy with excellent fluidity and castability. Si 10.5-13.5% near the eutectic point provides the best mould-filling capability among all Al casting alloys. Good corrosion resistance and weldability. NOT heat-treatable (no Mg). Used for complex thin-walled castings, marine components, food industry equipment, cooking utensils, and architectural castings. Equivalent to ASTM A413.0 and DIN G-AlSi12.
Chemical composition comparison (wt%)
Side-by-side: EN AC-AlSi12(a) (EN) (EN 1706) vs ASTM
| Element | EN AC-AlSi12(a) (EN) | ASTM | Overlap |
|---|---|---|---|
| Si | 10.5–13.5% | — | — |
| Mn | ≤ 0.35% | — | — |
| Cu | ≤ 0.05% | — | — |
| Ti | ≤ 0.15% | — | — |
| Fe | ≤ 0.55% | — | — |
| Mg | ≤ 0.1% | — | — |
Mechanical properties
F
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | ≥ 150 | MPa |
| Yield Strength | ≥ 70 | MPa |
| Elongation | ≥ 4 | % |
| Hardness HB | ≤ 50 | HB |
| Density | ≥ 2.65 | g/cm3 |
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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