Aluminium alloy 6082

Chemical composition

Al-1Si-0,9Mg-0,7Mn

Table 1 - Chemical composition of the aluminum alloy 6082

An alloy of 6xxx series
Deformable: by pressing and rolling methods
Heat hardenable
The main alloying elements are magnesium, silicon and manganese in the form of additives
The strengthening component is the intermetallic compound Mg₂Si.
At the nominal amount of chemical composition Mg compound₂Si after artificial aging can reach about 1,4 % with excess silicon content 0,5 % [1]
Manganese compounds inhibite recrystallization and, thereby, they allow to control the morphology and grain size during heat treatments.
Typical tempers are T6 and T4.
Condition T6: quenching with water after heating for quenching at 540 ºC and artificial aging at 175 ° C within 8 hours [1]
T4 state: natural aging at 20 ° C for at least 8 days after heating for hardening as for condition T6 [1]
It has no analogues in the GOST 4784-97
The place of alloy 6082 among other 6xxx series alloys are shown . in the figure below

Medium strength aluminum alloy
High corrosion resistance
It has the highest strength among the alloys of the 6xxx series. It is believed structural alloys.
In sheet form used for machining
A relatively new alloy. Most often used in Europe, than in North America. Due to the higher strength of an alloy is often used instead of 6061.
Additives large amount of manganese provide control of grain structure, what, in turn, It allows to achieve higher strength.
Difficult to manufacture thin walled extrusions complex.
The surface quality of extruded products below, than for other 6xxx series alloys
In states T6 and T651, it is well machined by cutting with the formation of long dense chips [2]

Table 2 –
Requirements for mechanical properties
extruded rods, pipes, profiles alloy 6082 в IN 755-2:2016

Table 3 - Typical mechanical properties of the alloy 6082 [1]

2,70 g / cm³

585-650 °C [3]

24 μm / (m · K)

70 GPa

180 W / m · K

Alloy 6082 It possesses good weldability, but it has a reduction of strength in the weld zone.
When welding itself recommended welding wire 4043 [2]
When welding alloy 6082 for alloy 7005 welding alloy must be used 5356 [2]

Lends itself well to soldering and brazing

good

good

Sources:
1. Aluminium & Car: design, technology, innovation — Edimet Spa, 2005
2. Materials companies Aalco Metals Ltd
3. Materials from Nedal Aluminum (Netherlands)