What is the difference between 6061 aluminum and 6063 aluminum?

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What is the difference between 6061 aluminum and 6063 aluminum?

Different element densities: The main alloying elements of 6063 are magnesium and silicon, the density is 2.69g/cm³, containing 0.4%Si and 0.7%Mg, the strength of hard materials is 295Mpa, and the strength of soft materials is 111Mpa. The melting temperature is 615-655 degrees.
The main alloying elements of 6061 are magnesium and silicon, and form the Mg2Si phase. The composition contains 0.6%Mg, 0.25%Cu, 1.0%Mg, 0.09%Cr, the hard strength is 316Mpa, and the soft strength is 127Mpa. In Mg2Si, the Mg/Si ratio is 1.73. In the heat treatment state, Mg2Si solid solution in aluminum , so that the alloy has the function of artificial aging hardening.

what is the difference between 6061 aluminum and 6063 aluminum

Mechanical Properties of 6061 Aluminum Versus 6063 Aluminum

Both 6061 and 6063 aluminum have a density of 2.7g/cm3 or 0.0975 lb/in3). 6061 can be strengthened using the heat-treatment process, with some common tempers being 6061-T4 and 6061-T6. 6063 can be similarly heat-treated, with 6063-T6 being the most common temper.

mechanical properties of 6061 aluminum versus 6063 aluminum

Advantages of each 6061 & 6063:

6061: Strength, Solderability, High Corrosion Resistance

6063: Excellent weldability, extrudability and electroplating, good corrosion resistance, toughness.


6063 is mainly used in: tubular railings, furniture, frames, extruded profiles for construction

6061 is mainly used in the manufacture of pipes, rods, shapes and plates for trucks, tower buildings, ships, trams, furniture, mechanical parts, precision machining, etc.

Summarize: The mechanical properties of metal profiles include hardness, strength, ductility, plasticity, fatigue strength, yield strength, etc. The 6063 grade aluminum alloy is better than the 6061 grade aluminum alloy in plasticity, and can meet the high requirements of precision. In terms of strength and processing performance, the aluminum alloy of the 6061 grade is better than the aluminum alloy of the 6063 grade.
The above is the relevant content about the difference between aluminum alloy 6061 and 6063. For more questions, you can directly consult 3Q MACHINING, and we will give you a instant answer.

Author: Mose Li

Author: Mose Li

Director of Project Engineering at 3Q Machining

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