On the tensile elongation of advanced high-strength steels

Conversion equations were employed to compare tensile elongations of various advanced high-strength steels (AHSS), which were tested with different sample geometries. Researchers were cautioned in using conversion equations for comparing total elongation of AHSS, which were processed by different routes with strengths greater than 1,000 MPa. Many researchers also realized that the sample gauge length and cross-sectional area of tensile test samples potentially had an effect on the total elongation of the sample. The need for a standard specimen for comparing the different steels was recognized, as researchers used different specimen geometries for testing of their advanced high-strength steels. Some researchers also proposed a methodology to convert the measured total elongation from tensile tests with differing sample sizes using the Oliver equation.