1.Different element density
The main alloying elements of 6063 are magnesium and silicon, with a density of 2.69g/cm³, containing 0.4%Si and 0.7%Mg, hard material strength 295Mpa, soft material strength 111Mpa, melting temperature 615-655 degrees.
The main alloying elements of 6061 are magnesium and silicon, and form Mg2Si phase. The composition contains 0.6% Mg, 0.25% Cu, 1.0% Mg, 0.09% Cr, hard strength 316Mpa, soft strength 127Mpa, in Mg2Si, Mg/Si ratio is 1.73, in the heat treatment state, Mg2Si is dissolved in aluminum, so that the alloy has artificial aging hardening function.
2.Respective advantages:
6061: strength, weldability, high corrosion resistance
6063: excellent weldability, extrudability and electroplating, good corrosion resistance, toughness.
3.Application range
6063 is mainly used for: tubular railings, furniture, frames, construction extrusion profiles
6061 is mainly used for: manufacturing trucks, tower buildings, ships, trams, furniture, mechanical parts, precision machining, etc. tubes, rods, profiles, plates.