About 6061 Aluminum Alloy Properties You Should to Know

6061 aluminum is a heat-treated reinforced alloy with good formability, weldability, machinability, moderate strength, and good operability after annealing.

The main alloying elements of the 6061 aluminum alloy is 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; 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.



6061-T651 is the main alloy of 6061 alloy. It is a high-quality aluminum alloy produced by heat treatment pre-stretching process. Its strength can not be compared with 2XXX 

series or 7XXX series, but its magnesium and silicon alloy have many characteristics and processing properties. Excellent, 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.

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Susan F.//SMC Editor