通过对12组不同工艺生产的性能相对稳定的汽车用钢板在两种不同柔度的试验机上进行拉伸试验，采用传统横梁位移控制模式控制拉伸速率，测试其强度指标和延性指标。结果表明: 在柔度较大的传统楔形夹具试验机上测得的上屈服强度ReH和规定非比例延伸强度Rp0.2比柔度较小的液压平推夹具试验机测得的结果要小，而试验机柔度对下屈服强度ReL、抗拉强度Rm和断后伸长率A测定结果则没有明显的影响; 该结果印证了新国标GB/T 228.1-2010中提出方法A(应变速率控制方法)的重要性和必要性; 同时根据试验机柔度对试验结果影响的差异，提出了方法A在实际执行过程中的建议。

Tensile properties of 12 groups of automotive steel plates with relatively stable mechanical properties and produced by different processes were tested on two tensile testing machines with different flexibility in crosshead separation rate controlling mode. The results show that the values of ReH and Rp0.2 which were tested on machine with wedge fixtures and higher flexibility were less than those tested on machine with hydraulic pressure horizon-push fixture and lower flexibility, while the testing machine flexibility had little influence on the values of ReL, Rm and elongation A. The results not only proved the importance and necessity of method A in the new national standard GB/T 228.1-2010, but also gave the proposal about the implementation of method A according to different test conditions.