典型用途：此合金有良好的成型加工性能，抗腐蝕性，可焊性，疲勞強度與中等的靜態強度，用于制造飛機油箱、油管，以及交通車輛、船舶的鈑金件、儀表、街燈支架等。
「The alloy boasts good shaping property, high corrosion resistance, weldability and fatigue strength,medium static strength, is used to make airplane oil tank, oil pipe, oil pipe, metal sheet and instrument for vehicle and vessel,street lamp post and riveted wire. 」
其主要化學成份為：
Cu0.1-,Si0.25-,Fe0.4-,Mn0.4-,Mg2.2-2.8-,Zn0.1-,Cr0.15-0.35-,
