6061 2019-06-28T10:54:48+00:00

Aluminium Alloy 6061


Aluminium alloy 6061 is very commonly extruded (first in popular is 6063).  It is one of the most common alloys of aluminum for general-purpose use. It mainly used in:

Aluminum for transportation is used for car body structure materials for automobiles, subway vehicles, railway passenger cars, high-speed passenger cars, door windows, shelves, automobile engine parts, air conditioners, radiators, body panels, wheels, and ships.

▹Chemical Component

The main alloying elements of the aluminium alloy 6061 are magnesium and silicon and form the Mg2Si phase. If it contains a certain amount of manganese and chromium, it can neutralize the bad effect of iron; sometimes a small amount of copper or zinc is added to increase the strength of the alloy without significantly reducing the corrosion resistance; there is still a small amount in the conductive material. Copper to offset the adverse effects of titanium and iron on conductivity; zirconium or titanium can refine grains and control recrystallized structure; in order to improve machinability, lead and antimony can be added. The Mg2Si is solid-dissolved in aluminum, which gives the alloy an artificial age hardening function.

6061VS6063-fonnov aluminium

ALUMINIUM ALLOY Si Fe Cu Mn Mg Cr Zn Ti Zr Others Aluminium
6061 0.4-0.8 0.7 0.15-0.4 0.15 0.8-1.2 0.04-0.35 0.2 0.15 0.15 reminder

✣All compositions are in percent.

Mechanical Properties

Aluminium alloy 6061 is a heat-treated reinforced alloy with good formability, weldability, machinability, moderate strength, and good operability after annealing. 6061 t6 aluminum is the main alloy of 6061. It is a high-quality aluminum alloy produced by a heat treatment pre-stretching process. Its strength cannot be compared with 2XXX series or 7075, but its magnesium and silicon alloy have many characteristics and excellent processing performance. Excellent welding characteristics and electroplating properties, good corrosion resistance, high toughness, and no deformation after processing, compact and defect-free materials, easy to polish, easy to paint, and excellent oxidation effect.

Aluminium Alloy & Temper Thickness


Tensile Strength
Yield Strength
Elongation /%


6061-T5 ≤16.00 240 205 9
6061-T6 ≤5.00 260 240 95
6061-T6 >5.00-25.00 260 240 10 95

✣The tested value is Min.

▹Physical Properties

Here is the physical property of the aluminum alloy 6061. Note that there is no difference between the T5 and T6 tempers.

Aluminium Alloy Thermal Coefficient of Expansion
Melting Point


6061 23.6 582-652 40 0.043 2.8


  • Click to check 6061 VS 6063 for the difference between aluminium alloy 6061 and 6063.

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