详情描述:
2219 ,2024,2124,3A21化学成分2219 ,2024,2124,3A21力学性能2219 ,2024,2124,3A21抗拉强度2219 ,2024,2124,3A21屈服强度2219 ,2024,2124,3A21硬度2219 ,2024,2124,3A21伸长率