ASTM E646-15
- Standard Test Method for Tensile Strain-Hardening Exponents (n -Values) of Metallic Sheet Materials
- standard by ASTM International, 11/15/2015
- Category: ASTM
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1.1 This test method covers the determination of a strain-hardening exponent by tension testing of metallic sheet materials for which plastic-flow behavior obeys the power curve given in the Introduction.
Note 1: A single power curve may not be a satisfactory fit to the entire stress-strain curve between yield and necking. If such is the case, more than one value of the strain-hardening exponent may be obtained (2) by agreement using this test method.
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