力学性能(【技】材料在外力作用下所表现出的形状改变及其断裂的性质。材料的力学性能通常包括:抗拉强度、抗压强度、硬度、冲击吸收能量、蠕变强度、疲劳强度等。: Alloy steels are basically carbon steels with additional alloy elements added to alter the characteristics and bring about a predictable change in the mechanical properties. 从本质上说,合金钢是通过添加合金元素改变其特性并产生预期力学性能变化的碳钢。)