Aluminium alloy 6082 is a medium strength alloy with excellent corrosion resistance. It has the highest strength of the 6000 series alloys. Alloy 6082 is known as a structural alloy. In plate form, 6082 is the alloy most commonly used for machining. As a relatively new alloy, the higher strength of 6082 has seen it replace 6061 in many applications. The addition of a large amount of manganese controls the grain structure which in turn results in a stronger alloy. It is difficult to produce thin walled, complicated extrusion shapes in alloy 6082. The extruded surface finish is not as smooth as other similar strength alloys in the 6000 series. In the T6 and T651 temper, alloy 6082 machines well and produces tight coils of swarf when chip breakers are used.
Alloy 6082 is typically used in:
Alloy 6082
Spec: BS EN 573-3:2009
| Chemical Element | % Present |
|---|---|
| Silicon (Si) | 0.70 - 1.30 |
| Iron (Fe) | 0.0 - 0.50 |
| Copper (Cu) | 0.0 - 0.10 |
| Manganese (Mn) | 0.40 - 1.00 |
| Magnesium (Mg) | 0.60 - 1.20 |
| Chromium (Cr) | 0.0 - 0.25 |
| Zinc (Zn) | 0.0 - 0.20 |
| Titanium (Ti) | 0.0 - 0.10 |
| Other (Each) | 0.0 - 0.05 |
| Others (Total) | 0.0 - 0.15 |
| Aluminium (Al) | Balance |
Alloy 6082
| Property | Value |
|---|---|
| Density | 2.70 g/cm³ |
| Melting Point | 555 °C |
| Thermal Expansion | 24 x 10⁻⁶ / K |
| Modulus of Elasticity | 70 GPa |
| Thermal Conductivity | 180 W/m·K |
| Electrical Resistivity | 0.038 x 10⁻⁶ Ω·m |
Extrusions: Extruded Rod, Bar, Tube & Profiles
Spec: BS EN 755-2:2008
| Product Form | Proof Stress (Min) | Tensile Strength (Min) | Elongation A50 mm (Min) | Elongation A (Min) | Hardness |
|---|---|---|---|---|---|
| Rod & Bar (Up to 20mm Dia. & A/F) | 250 MPa | 295 MPa | 6 % | 8 % | 95 HB |
| Rod & Bar (20mm to 150mm Dia. & A/F) | 260 MPa | 310 MPa | — | 8 % | 95 HB |
| Bar (150mm to 200mm Dia. & A/F) | 240 MPa | 280 MPa | — | 6 % | 95 HB |
| Bar (200mm to 250mm Dia. & A/F) | 200 MPa | 270 MPa | — | 6 % | 95 HB |
| Tube (Up to 5mm Wall Thickness) | 250 MPa | 290 MPa | 6 % | 8 % | 95 HB |
| Tube (5mm to 25mm Wall Thickness) | 260 MPa | 310 MPa | 8 % | 10 % | 95 HB |
| Open & Hollow Profile (Up to 5mm Wall) | 250 MPa | 290 MPa | 6 % | 8 % | 95 HB |
| Open & Hollow Profile (5mm to 25mm Wall) | 260 MPa | 310 MPa | 8 % | 10 % | 95 HB |
Aluminium alloy 6082 also corresponds to the following standard designations and specifications but may not be a direct equivalent:
The most common tempers for 6082 aluminium are:
Alloy 6082 is typically supplied as Channel, Angle, Tee, Square bar, Square box section, Rectangular box section, Flat bar and Tube:
6082 has very good weldability but strength is lowered in the weld zone. When welded to itself, alloy 4043 wire is recommended. If welding 6082 to 7005, then the wire used should be alloy 5356. Weldability – Gas: Good, Weldability – Arc: Good, Weldability – Resistance: Good, Brazability: Good, Solderability: Good.
