Aluminium alloy 4925 is the Pechiney equivalent of alloy 4015, offering a high-quality, general-purpose solution with a balanced combination of good ductility and mechanical strength. It is closely related to the 3103 Al–Mn alloy, but contains a higher silicon content, enhancing its overall performance. This alloy is suitable for welding, anodising, and painting*. However, the anodised finish of alloy 4925 appears darker and less reflective than that of alloys 1050 or 3103, and is therefore not recommended for decorative anodised applications. Due to its well-rounded properties, many users now prefer alloy 4925 as a replacement for traditional alloys such as 1050 and 3103. The corrosion resistance of alloy 4925 is comparable to that of 3000 series aluminium alloys. It performs well in mill finish or painted condition, but is not recommended for use in aggressive environments.* Anodised finishes on alloy 4925 will be darker and less reflective compared to alloys 1050 and 3103. Note: Mechanical properties quoted in this datasheet relate to the H12 temper. Properties for other tempers are available separately.
Alloy: 4925
Spec: Manufacturer's Data
| Chemical Element | % Present |
|---|---|
| Manganese (Mn) | 0.60 – 1.20 |
| Iron (Fe) | 0.70 (Max) |
| Copper (Cu) | 0.20 (Max) |
| Magnesium (Mg) | 0.10 – 0.50 |
| Silicon (Si) | 1.40 – 2.20 |
| Zinc (Zn) | 0.20 (Max) |
| Aluminium (Al) | Balance |
| Property | Value |
|---|---|
| Density | 2.72 g/cm³ |
| Melting Point | 600 °C |
| Thermal Expansion | 24 × 10⁻⁶ /K |
| Modulus of Elasticity | 70 GPa |
| Thermal Conductivity | 150 – 200 W/m·K |
Temper: H12
Spec: Manufacturer's Data
| Property | Value |
|---|---|
| Tensile Strength | 135 – 175 MPa |
| Proof Stress | 110 MPa (Min) |
| Elongation (A50 mm) | 4% (Min) |
Aluminium alloy 4925 shares similarities with alloy 4015, but may not be a direct equivalent.
Common tempers available for aluminium alloy 4925:
