Aluminium alloy 6063 is a medium-strength alloy, widely known as an architectural alloy and commonly used for intricate extrusions. It offers an excellent surface finish, high corrosion resistance, and is readily weldable. The alloy is easily anodised. While most commonly supplied in T6 temper, the T4 condition provides good formability, making it suitable for bending and shaping applications.
Alloy 6063
Spec: BS EN 573-3:2009
| Chemical Element | % Present |
|---|---|
| Manganese (Mn) | 0.0 – 0.10 |
| Iron (Fe) | 0.0 – 0.35 |
| Magnesium (Mg) | 0.45 – 0.90 |
| Silicon (Si) | 0.20 – 0.60 |
| Zinc (Zn) | 0.0 – 0.10 |
| Copper (Cu) | 0.0 – 0.10 |
| Aluminium (Al) | Balance |
| Other (Each) | 0.0 – 0.05 |
| Others (Total) | 0.0 – 0.15 |
| Property | Value |
|---|---|
| Density | 2.70 g/cm³ |
| Melting Point | 600 °C |
| Thermal Expansion | 23.5 × 10⁻⁶ /K |
| Modulus of Elasticity | 69.5 GPa |
| Thermal Conductivity | 200 W/m·K |
| Electrical Resistivity | 0.035 × 10⁻⁶ Ω·m |
Rod & Bar – Up to 200 mm Dia.
Spec: BS EN 755-2:2008
| Property | Value |
|---|---|
| Tensile Strength | 130 MPa (Max) |
| Elongation A50 mm | 16% (Min) |
| Hardness (Brinell) | 25 HB |
| Elongation A | 18% (Min) |
Tube – Up to 25 mm Wall Thickness
Spec: BS EN 755-2:2008
| Property | Value |
|---|---|
| Tensile Strength | 130 MPa (Max) |
| Elongation A50 mm | 16% (Min) |
| Hardness (Brinell) | 25 HB |
| Elongation A | 18% (Min) |
Aluminium alloy 6063/6063A corresponds to the following designations (may not be direct equivalents):
Common tempers for 6063 aluminium:
6063 is suitable for all conventional welding methods. Recommended welding wires: Alloy 5183 or 4043 for general welding 4043 for maximum electrical conductivity 5346 for strength and conductivity (increase weld size for lower conductivity)
| Welding Method | Rating |
|---|---|
| Gas | Excellent |
| Arc | Excellent |
| Resistance | Excellent |
| Brazing | Very Good |
| Soldering | Good |
