Grade: 5A43 Standard: GB / T 3618-1989 Features and Scope: Is Al-Mg-Mn alloy lower component. Chemical composition: Al Al: margin silicon Si: ≤0.40 copper Cu: ≤0.10 magnesium Mg: 0.6 ~ 1.4 Mn Mn: 0.15 ~ 0.40 Titanium Ti: ≤0.15 iron Fe: 0.000 ~ 0.400 Note: Single: ≤0.05; Total: ≤0.15 Mechanical Properties: Tensile strength σb (MPa): ≥118 Elongation δ10 (%): ≥4 Note: checkered mechanical properties at room temperature (reference value)