3103 aluminium alloy is a commercial aluminium which is close in properties to 3003. With very good resistance to atmospheric corrosion and excellent mechanical properties, 3103 is a versatile alloy which is used in the aerospace, oil and gas industry and automotive sector amongst others. The material has improved mechanical properties over 1000 series aluminium alloys, especially at elevated working temperatures. This feature widens the use of the alloy as a construction cladding material.
Alloy 3103 is typically used for:
Alloy 3103
Spec: weight %
| Chemical Element | % Present |
|---|---|
| Manganese (Mn) | 0.90 - 1.50 |
| Iron (Fe) | 0.0 - 0.70 |
| Copper (Cu) | 0.0 - 0.10 |
| Magnesium (Mg) | 0.0 - 0.05 |
| Silicon (Si) | 0.0 - 0.50 |
| Zinc (Zn) | 0.0 - 0.20 |
| Chromium (Cr) | 0.0 - 0.10 |
| Titanium + Zirconium (Ti+Zr) | 0.0 - 0.10 |
| Other | 0.05 - 0.15 |
| Aluminium (Al) | Balance |
Alloy 3103
| Property | Value |
|---|---|
| Density | 2.73 g/cm³ |
| Melting Point | 655 °C |
| Thermal Expansion | 23.1 x 10⁻⁶ / K |
| Modulus of Elasticity | 69.5 GPa |
| Thermal Conductivity | 160 W/m·K |
| Electricity Resistivity | 42% IACS |
Condition: H14 Condition
| Property | Value |
|---|---|
| Tensile Strength | 140 MPa min |
| Elongation A50 mm | 8% min |
| Shear Strength | 90 MPa 46HV |
| Hardness Vickers | 110 Mpa min |
| Proof Stress | — |
Alloy 3103 weldability is Rated Very Good.
