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 |
Extruded Rod and Bar – Up to 150 mm Dia. or A/F (T4 Temper)
Spec: BS EN 755-2:2008
| Property | Value |
|---|---|
| Proof Stress | 90 MPa (Min) |
| Tensile Strength | 150 MPa (Min) |
| Elongation A50 mm | 10% (Min) |
| Hardness (Brinell) | 50 HB |
| Elongation A | 12% (Min) |
Aluminium alloy 6063 / 6063A corresponds to the following designations (not necessarily direct equivalents):
6063 is suitable for all conventional welding methods. Recommended welding wires: Alloy 5183 or 4043 for general welding 4043 where maximum electrical conductivity is required 5346 for strength and conductivity (increase weld size to compensate for lower conductivity)
| Welding Method | Rating |
|---|---|
| Gas | Excellent |
| Arc | Excellent |
| Resistance | Excellent |
| Brazing | Excellent |
| Soldering | Good |
