Aluminium alloy 6005A is a medium-strength, heat-treatable alloy offering excellent corrosion resistance and very good mechanical performance. Its properties sit between alloys 6061 and 6082, and in many applications it can be used interchangeably with them. However, 6005A offers superior extrusion characteristics and a better mill surface finish. While it is not ideal for very thin-wall or highly complex sections, it is more readily extrudable than alloy 6082. 6005A tubes exhibit excellent bending characteristics, making them well suited for structural and profile-based applications. Note: Mechanical properties listed below apply to the T6 temper.
Alloys 6005 and 6005A are typically used for intricate and structural extrusions, including:
Alloy 6005A
Spec: BS EN 573-3:2009
| Chemical Element | % Present |
|---|---|
| Silicon (Si) | 0.50 – 0.90 |
| Magnesium (Mg) | 0.40 – 0.70 |
| Manganese (Mn) | 0.00 – 0.50 |
| Chromium (Cr) | 0.00 – 0.30 |
| Iron (Fe) | 0.00 – 0.35 |
| Copper (Cu) | 0.00 – 0.30 |
| Zinc (Zn) | 0.00 – 0.20 |
| Aluminium (Al) | Balance |
| Other (Each) | 0.00 – 0.05 |
| Others (Total) | 0.00 – 0.15 |
| Property | Value |
|---|---|
| Density | 2.70 g/cm³ |
| Melting Point | 605 °C |
| Thermal Expansion | 24 × 10⁻⁶ /K |
| Modulus of Elasticity | 70 GPa |
| Thermal Conductivity | 188 W/m·K |
| Electrical Resistivity | 0.034 × 10⁻⁶ Ω·m |
Rod & Bar (Up to 25 mm Dia./A/F)
Spec: BS EN 755-2:2008
| Property | Value |
|---|---|
| Proof Stress | ≥ 225 MPa |
| Tensile Strength | ≥ 270 MPa |
| Shear Strength | 205 MPa |
| Hardness (Brinell) | 90 HB |
| Elongation (A) | ≥ 10 % |
Rod & Bar (25 mm to 50 mm Dia./A/F)
| Property | Value |
|---|---|
| Proof Stress | ≥ 225 MPa |
| Tensile Strength | ≥ 270 MPa |
| Hardness (Brinell) | 90 HB |
| Elongation (A) | ≥ 8 % |
Rod & Bar (50 mm to 100 mm Dia./A/F)
| Property | Value |
|---|---|
| Proof Stress | ≥ 215 MPa |
| Tensile Strength | ≥ 260 MPa |
| Hardness (Brinell) | 85 HB |
| Elongation (A) | ≥ 8 % |
Tube (Up to 5 mm Wall Thickness)
| Property | Value |
|---|---|
| Proof Stress | ≥ 225 MPa |
| Tensile Strength | ≥ 270 MPa |
| Elongation (A50 mm) | ≥ 6 % |
| Hardness (Brinell) | 90 HB |
Tube (5 mm to 10 mm Wall Thickness)
| Property | Value |
|---|---|
| Proof Stress | ≥ 215 MPa |
| Tensile Strength | ≥ 260 MPa |
| Elongation (A50 mm) | ≥ 6 % |
| Hardness (Brinell) | 85 HB |
Open Profiles (Up to 5 mm Wall Thickness)
| Property | Value |
|---|---|
| Proof Stress | ≥ 225 MPa |
| Tensile Strength | ≥ 270 MPa |
| Elongation (A50 mm) | ≥ 6 % |
| Hardness (Brinell) | 90 HB |
Open Profiles (5 mm to 10 mm Wall Thickness)
| Property | Value |
|---|---|
| Proof Stress | ≥ 215 MPa |
| Tensile Strength | ≥ 260 MPa |
| Elongation (A50 mm) | ≥ 6 % |
| Hardness (Brinell) | 85 HB |
Open Profiles (10 mm to 25 mm Wall Thickness)
| Property | Value |
|---|---|
| Proof Stress | ≥ 200 MPa |
| Tensile Strength | ≥ 250 MPa |
| Elongation (A50 mm) | ≥ 6 % |
| Hardness (Brinell) | 85 HB |
Hollow Profiles (Up to 5 mm Wall Thickness)
| Property | Value |
|---|---|
| Proof Stress | ≥ 215 MPa |
| Tensile Strength | ≥ 255 MPa |
| Elongation (A50 mm) | ≥ 6 % |
| Hardness (Brinell) | 85 HB |
Hollow Profiles (5 mm to 15 mm Wall Thickness)
| Property | Value |
|---|---|
| Proof Stress | ≥ 200 MPa |
| Tensile Strength | ≥ 250 MPa |
| Elongation (A50 mm) | ≥ 6 % |
| Hardness (Brinell) | 85 HB |
Aluminium alloy 6005A also corresponds to the following designations, though these may not be direct equivalents:
The most common temper for 6005A aluminium is:
Alloy 6005A offers excellent weldability. Recommended filler wire: 4043 For welding to 7XXX series alloys: 5356
| Property | Rating |
|---|---|
| Gas Welding | Excellent |
| Arc Welding | Excellent |
| Resistance Welding | Excellent |
| Brazability | Excellent |
