ASTM-E646 2015

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E646-15 Standard Test Method for Tensile Strain-Hardening Exponents (n -Values) of Metallic Sheet Materials

Published By	Publication Date	Number of Pages
ASTM	2015	9

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Categories: 77.140.50 - Flat steel products and semi-products, ASTM

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Description

ASTM E646-15

Historical Standard: Standard Test Method for Tensile Strain-Hardening Exponents (n -Values) of Metallic Sheet Materials

ASTM E646

Scope

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.

1.2 This test method is specifically for metallic sheet materials with thicknesses of at least 0.005 in. (0.13 mm) but not greater than 0.25 in. (6.4 mm). The method has successfully been and may be applied to other forms and thicknesses by agreement

1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

Note 2: The value of the strain-hardening exponent, n, is has no units and is independent of the units used in its determination

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Keywords

ICS Code

ICS Number Code 77.140.50 (Flat steel products and semi-products)

DOI: 10.1520/E0646-15

Additional information

Standard Title	E646-15 Standard Test Method for Tensile Strain-Hardening Exponents (<emph type="bdit">n</emph > -Values) of Metallic Sheet Materials
Published Code	ASTM
Publication Date	2015
Pages Count	9
ICS Codes	77.140.50 - Flat steel products and semi-products