Critical Assessment 10: Tensile elongation of strong automotive steels as function of testpiece geometry

Abstract

Total elongation as measured in tensile tests on strong steels is adopted in product specifications and development goals, and sometimes assumed to relate to formability. The quantity, however, is measured in a variety of ways in the reported literature and is often used to make unjustified comparisons. Using purposely generated experimental data, the effect of specimen geometry on the measured total elongation is critically assessed.