6061 aluminum alloy as the main alloying elements of magnesium and silicon, with moderate strength, good corrosion resistance, weldability, good oxidation effect. Widely used antibiotics requires a certain strength and high corrosion resistance of various industrial structures, such as the manufacture of trucks, tower buildings, ships, trams, railway vehicles, furniture and so on. GB for the LD30 chemical composition:. Cu: 0.15-0.4 Si: 0.4-0.8 Fe: 0.7 Mn: 0.15 Mg: 0.8-1.2 Zn: 0.25 Cr: 0.04-0.35 Ti: 0.15 Mechanical Properties: Tensile strength σb (MPa): ≥180 yield strength σ0.2 (MPa): ≥110 Elongation δ5 (%): ≥14 Note: longitudinal bars at room temperature mechanical properties of the sample size: ≤150 diameter than the index in question, T6 state strength pricey ah, at room temperature tensile yield 276Mpa 310MPA technical standard AMS-QQ-A-250/11 weight L * W * H * density (0.0028) = kg / m