Abstract��In Method B of national standard GB/T 228.1-2010�� it was proposed to measure upper yield strength by stress controlling testing rate. The feature of stress and strain before upper yield strength of steel and iron material was analyzed. Moreover�� the common standards for tensile test at room temperature of metallic materials at home and abroad were compared and discussed. It was concluded that the stress closed loop control could not be further used in tensile test during elastic plastic deformation period.
��Ω�ϣ��� ������ϼ. dz��GB/T 228.1��2010�����������鷽���е�Ӧ������[J]. �й������ڿ���, 2016, 34(6): 56-58.
XU Wei-cheng��ZHANG Hua��LUO Dan-xia. Analysis of stress rate of tensile test method at room temperature in GB/T 228.1-2010. Chinese Journal of Iron and Steel, 2016, 34(6): 56-58.