Our engineering team will help you choose the most appropriate aluminium alloys according to the technical requirements of your product.
We analyse the specific material selection criteria for each project, providing detailed insight into the advantages and drawbacks of the different high performance aluminium alloys available on the market.
Aluminium casting materials
We have vast experience working with various aluminium casting materials, specifically Al-Si alloys. Our expertise in aluminium materials for injection allows us to optimize the mechanical properties aluminium components require for demanding industrial applications.
The casting materials we most commonly work with are:
[AlSi9Cu3(Fe)] This is a highly versatile alloy used for a wide range of industrial applications requiring pressure tightness. It offers good mechanical strength at high temperatures and good machinability. It is suitable for heat treatment.
- Density: 2.70 g/cm³
- Hardness (as-cast): 80–120 HB
- Tensile strength: 240–310 N/mm²
- Electrical conductivity: 13–17 MS/m
EN AC-47.100 [AlSi12Cu1(Fe)] This alloy is suitable for a wide range of industrial applications involving complex geometries and thin walls, thanks to its excellent castability.
It has lower mechanical strength and stiffness than EN AC-46.000, although it maintains good machinability. It is not suitable for heat treatment.
- Density: 2.65 g/cm³
- Hardness (as-cast): 75–95 HB
- Tensile strength: 225–265 N/mm²
- Electrical conductivity: 15–20 MS/m
EN AC-44.300 [AlSi12(Fe)] This alloy offers good corrosion resistance. It has lower stiffness and reduced machinability. Its response to heat treatment is limited due to the absence of Mg.
- Density: 2.68 g/cm³
- Hardness (as-cast): 60–100 HB
- Tensile strength: 220–280 N/mm²
- Electrical conductivity: 16–22 MS/m
SILAFONT 36 [AlSi10MnMg] – In trials
Alloy with excellent castability, ideal for parts with complex geometries and thin walls. Depending on the Mg content, it can produce castings with optimal mechanical properties and elongation, with or without post heat treatment.
It offers very good corrosion resistance, good weldability, and good machinability. It is suitable for joining processes based on plastic deformation, such as clinching or riveting.
- Density: 2.64 g/cm³
- Hardness (as-cast): 90–110 HB
- Tensile strength: 250–290 N/mm²
- Electrical conductivity: 21–26 MS/m
CASTASIL 37 [AlSi9MnMoZr] – In trials
This alloy shows very good performance in the manufacturing of parts with complex geometries and/or thin walls using HPDC. It can produce castings with excellent elongation values (>10%).
It offers very high stability due to its low Mg content, as well as very good corrosion resistance and excellent fatigue resistance. It also provides good weldability and machinability, and is suitable for joining processes such as clinching or riveting.
- Density: 2.69 g/cm³
- Hardness (as-cast): 60–75 HB
- Tensile strength: 260–300 N/mm²
- Electrical conductivity: 18–22 MS/m
