Aluminium Alloy | Commercial Alloy
6082 - T4 Extrusions
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.
Applications
6082 is typically used in:
~ Highly stressed applications
~ Trusses
~ Bridges
~ Cranes
~ Transport applications
~ Ore skips
~ Beer barrels
~ Milk churns
Chemical Composition
|
BS EN 573-3:2009 Alloy 6082 |
|
|---|---|
| Chemical Element | % Present |
| Aluminium (Al) | balance |
| Other (Each) | 0.05 max |
| Copper (Cu) | 0.1 max |
| Titanium (Ti) | 0.1 max |
| Others (Total) | 0.15 max |
| Zinc (Zn) | 0.2 max |
| Chromium (Cr) | 0.25 max |
| Iron (Fe) | 0.5 max |
| Manganese (Mn) | 0.4 - 1 |
| Magnesium (Mg) | 0.6 - 1.2 |
| Silicon (Si) | 0.7 - 1.3 |
Alloy Designations
Aluminium alloy 6082 also corresponds to the following standard designations and specifications but may not be a direct equivalent:
AA6082
HE30
DIN 3.2315
EN AW-6082
ISO: Al Si1MgMn
A96082
Temper Types
The most common tempers for 6082 aluminium are:
- T6
- O
- T4
- T651
Supplied Forms
Alloy 6082 is typically supplied as Channel, Angle, Tee, Square bar, Square box section, Rectangular box section, Flat bar, Tube and Sheet Plate and shate can also be supplied as 6082-T651
- Extrusions
- Bar
- Plate
- Sheet
- Tube
Generic Physical Properties
| Physical Property | Value |
|---|---|
| Density | 2.70 g/cm³ |
| Melting Point | 555 °C |
| Thermal Expansion | 24 x10^-6 /K |
| Modulus of Elasticity | 70 GPa |
| Thermal Conductivity | 180 W/m.K |
| Electrical Resistivity | 0.038 x10^-6 Ω .m |
Mechanical Properties
|
BS EN 755-2:2008 Extruded Rod,Bar,Tube & Profiles - Up to 200mm Dia.or A/F, Up to 25mm WT tube & Prof |
|
|---|---|
| Mechanical Property | Value |
| Proof Stress | 110 Min MPa |
| Tensile Strength | 205 Min MPa |
| Elongation A50 mm | 12 Min % |
| Hardness Brinell | 70 HB |
| Elongation A | 14 Min % |
Properties above are for material in the T4 condition
Weldability
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
Fabrication
Workability - Cold: Good
Machinability: Good