ISO 16842:2021 PDF

This document specifies the method for measuring the stress-strain curves of sheet metals subject to biaxial tension using a cruciform test piece fabricated from a sheet metal sample. The applicable thickness of the sheet is 0,1°mm or more and 0,08°times or less of the arm width of the cruciform test piece (see Figure°1). The test temperature ranges from 10°°C to 35°°C. The amount of plastic strain applicable to the gauge area of the cruciform test piece depends on the force ratio, slit width of the arms, work hardening exponent (n-value) (see Annex°B) and anisotropy of a test material.