Standardization of instantaneous tensile strain hardening properties of metallic materials

With the continuous development of user technology, the existing work hardening performance test standards could no longer meet the needs of performance characterization of advanced steel products. It was necessary to increase the determination of n value, tensile instantaneous strain hardening index and tensile strain hardening rate of structural steel circular samples and thick plate samples above 3 mm thickness. With the promulgation and implementation of T/CSTM 00514—2022 group standard, the test standard of tensile strain hardening performance in China was becoming more and more complete and systematic.