Method for acquiring material property, method for manufacturing press-formed article, punching device, and press-formed article manufacturing equipment

Abstract

Provided is technology that makes it possible to easily and accurately acquire material properties that affect the dimensional accuracy of a press, even within a press line. This method for acquiring a material property, for obtaining a material property of a metal plate for press working, involves: punching the metal plate; measuring the maximum punching load and the plate thickness of the metal plate during punching; and obtaining the breaking stress of the metal plate from the measured maximum load and plate thickness.