Aluminium casting alloys
EN AC-48000 (AlSi12CuNiMg) chemical composition
Aluminium casting alloy EN AC-48000 (AlSi12CuNiMg)
AlSi12CuNiMg, the eutectic piston alloy: copper, nickel and magnesium retain strength and wear resistance at elevated temperature, combined with low thermal expansion. Used for pistons and heat-exposed parts.
- Designation
- EN AC-48000
- Standard
- EN 1706
- Also known as
- AlSi12CuNiMg, EN AC-AlSi12CuNiMg, A-S12UN, AS12UN
- Family
- Aluminium casting alloys
Chemical composition (mass %)
| Element | min | max |
|---|---|---|
| SiSilicon | 10.5 | 13.5 |
| MnManganese | – | 0.35 |
| NiNickel | 0.70 | 1.30 |
| CuCopper | 0.80 | 1.50 |
| TiTitanium | – | 0.25 |
| FeIron | – | 0.70 |
| ZnZinc | – | 0.35 |
| MgMagnesium | 0.80 | 1.50 |
| AlAluminium | remainder | |
Basis of values: Limits per EN 1706.
We cast EN AC-48000
We sand cast these aluminium alloys and machine the castings in the group's own CNC machine shop; the chemistry is verified by spectrometer and EN 10204 3.1 certificates are available.
- Sand casting at our foundry in Mandra, Attica; centrifugal casting for bushings, sleeves and liners
- Heat treatment at the foundry (water, oil or air quench); CNC machining in our machine shop in Perama
- Spectrometer analysis of every heat, mechanical testing and NDT
- EN 10204 3.1 inspection certificates; ISO 9001 (both plants) and ISO 14001 (foundry) certified
Other grades in this family
For information only, without warranty: limits per the cited standard or, where stated, typical or house values; ≈ marks a comparable grade, not an equivalent. The current edition of the standard, the purchase order and the drawing govern.