Aluminium alloy 6063 is a medium-strength, heat-treatable alloy, widely referred to as an architectural alloy and commonly used for intricate extrusions. It offers an excellent surface finish, high corrosion resistance, good weldability, and excellent anodising characteristics. The alloy is most commonly supplied in the T6 temper, while the T4 condition provides improved formability for bending and shaping operations.
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 | 655 °C |
| Thermal Expansion | 23.5 × 10⁻⁶ /K |
| Modulus of Elasticity | 69.5 GPa |
| Thermal Conductivity | 201 W/m·K |
| Electrical Resistivity | 0.033 × 10⁻⁶ Ω·m |
Rod & Bar – Up to 150 mm Dia. / A/F
Spec: BS EN 755-2:2008
| Property | Value |
|---|---|
| Proof Stress | 170 MPa (Min) |
| Tensile Strength | 215 MPa (Min) |
| Hardness (Brinell) | 75 HB |
| Elongation A | 10% (Min) |
| Elongation A50 mm | 8% (Min) |
Rod & Bar – 150 mm to 200 mm Dia. / A/F
Spec: BS EN 755-2:2008
| Property | Value |
|---|---|
| Proof Stress | 160 MPa (Min) |
| Tensile Strength | 195 MPa (Min) |
| Hardness (Brinell) | 75 HB |
| Elongation A | 10% (Min) |
Tube – Up to 25 mm Wall Thickness
Spec: BS EN 755-2:2008
| Property | Value |
|---|---|
| Proof Stress | 170 MPa (Min) |
| Tensile Strength | 215 MPa (Min) |
| Hardness (Brinell) | 75 HB |
| Elongation A50 mm | 8% (Min) |
| Elongation A | 10% (Min) |
Profiles – Up to 10 mm Wall Thickness
Spec: BS EN 755-2:2008
| Property | Value |
|---|---|
| Proof Stress | 170 MPa (Min) |
| Tensile Strength | 215 MPa (Min) |
| Hardness (Brinell) | 75 HB |
| Elongation A50 mm | 6% (Min) |
| Elongation A | 8% (Min) |
Profiles – 10 mm to 25 mm Wall Thickness
Spec: BS EN 755-2:2008
| Property | Value |
|---|---|
| Proof Stress | 160 MPa (Min) |
| Tensile Strength | 195 MPa (Min) |
| Hardness (Brinell) | 75 HB |
| Elongation A50 mm | 6% (Min) |
| Elongation A | 8% (Min) |
Aluminium alloy 6063 / 6063A corresponds to the following standards and specifications (not necessarily direct equivalents):
Common tempers for 6063 aluminium:
Alloy 6063 is suitable for all conventional welding methods. Recommended welding wires include: Alloy 5183 or 4043 for general applications 4043 where maximum electrical conductivity is required 5346 for strength and conductivity (increase weld size to compensate for lower conductivity)
| Welding Method | Rating |
|---|---|
| Gas | Good |
| Arc | Very Good |
| Resistance | Good |
| Brazing | Very Good |
| Soldering | Good |
