The bullet-proof clothes, made of 7A52 Al alloy plates and bullet-proof nylon, can not meet the requirement of type 54 pistol lead core bullet ballistic performance.

• 由于采用7A52铝合金装甲板与进口防弹尼龙制成的防弹衣不能满足54式手枪铅芯弹抗弹性能指标要求,对7A52铝合金进行了研究。