6061 6061 T6 aluminum which state that the difference between T651 and under normal circumstances, the internal stress T6 will be relatively large, the deformation process will be the most suitable for processing of state should be T651, he was stretched on the basis of T6, eliminate internal stress of 6061 aluminum alloy main alloying elements are magnesium and silicon, and the formation of Mg2Si phase. If a certain amount of manganese and chromium, and can be bad in the role of iron; sometimes add a small amount of copper or zinc, to increase the strength of the alloy, without significantly reducing its corrosion resistance; a conductive material in small amounts copper, titanium, and to offset the adverse effects of iron on the conductivity; zirconium or titanium can refine grain recrystallized structure and control; in order to improve machinability, lead and bismuth can be added. In Mg2Si solid solution in aluminum, alloy artificial age hardening function. 6061 aluminum alloy as the main alloying elements of magnesium and silicon, with moderate strength, good corrosion resistance, weldability, oxidation is better. Alcoa 6061 has excellent processing properties, good corrosion resistance, high toughness and processed without distortion, color film is easily oxidized excellent results and other fine features. It belongs to Al-Mg-Si based alloy, medium strength, good ductility and excellent corrosion resistance. In particular, no stress corrosion cracking tendency, their weldability, corrosion resistance and cold resistance, is a wide range. Alloy promising. Anodizing can also be painted on enamel, adapted for the building and furnishing materials. Which contains a small amount of Cu, and thus the strength of higher than 6063, but the quench sensitivity is also higher than 6063, wind quenching after extrusion can not be achieved, we need to re-solution treatment and quenching aging, in order to obtain a higher strength. Chemical composition of silicon Si: 0.40-0.8 iron Fe: 0.7 Cu Cu: 0.15-0.40 Manganese Mn: 0.15 Mg Mg: 0.8-1.2 chromium Cr: 0.04-0.35 Zinc Zn: 0.25 Titanium Ti: 0.15 Al Al: margin Other: Single : 0.05 Total: 0.15 Mechanical Properties Mechanical Properties: Tensile strength σb (MPa): ≥180 yield strength σ0.2 (MPa): ≥110 Elongation δ5 (%): ≥14 Note: longitudinal bars at room temperature mechanical properties test Sample size: diameter ≤150