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ASTM E646

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

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Organization: ASTM
Publication Date: 1 February 2016
Status: active
Page Count: 9
ICS Code (Flat steel products and semi-products): 77.140.50
scope:

This test method covers the determination of a strainhardening exponent by tension testing of metallic sheet materials for which plastic-flow behavior obeys the power curve given in the Introduction.

NOTE 1-Asingle 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.

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

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, has no units and is independent of the units used in its determination

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.

 *A Summary of Changes section appears at the end of this standard

 

Document History

ASTM E646
February 1, 2016
Standard Test Method for Tensile Strain-Hardening Exponents (n -Values) of Metallic Sheet Materials
This test method covers the determination of a strainhardening exponent by tension testing of metallic sheet materials for which plastic-flow behavior obeys the power curve given in the Introduction....
November 15, 2015
Standard Test Method for Tensile Strain-Hardening Exponents (n -Values) of Metallic Sheet Materials
This test method covers the determination of a strainhardening exponent by tension testing of metallic sheet materials for which plastic-flow behavior obeys the power curve given in the Introduction....
December 1, 2007
Standard Test Method for Tensile Strain-Hardening Exponents (n -Values) of Metallic Sheet Materials
This test method covers the determination of a strainhardening exponent by tension testing of metallic sheet materials for which plastic-flow behavior obeys the power curve given in the Introduction....
December 1, 2007
Standard Test Method for Tensile Strain-Hardening Exponents (n-Values) of Metallic Sheet Materials
This test method covers the determination of a strainhardening exponent by tension testing of metallic sheet materials for which plastic-flow behavior obeys the power curve given in the Introduction....
May 10, 2000
Standard Test Method for Tensile Strain-Hardening Exponents (n-Values) of Metallic Sheet Materials
1. 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...
October 10, 1998
Standard Test Method for Tensile Strain-Hardening Exponents (n-Values) of Metallic Sheet Materials
1. 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...
January 1, 1993
Standard Test Method for Tensile Strain-Hardening Exponents (n-Values) of Metallic Sheet Materials
A description is not available for this item.
February 22, 1991
STANDARD TEST METHOD FOR TENSILE STRAIN-HARDENING EXPONENTS (N-VALUES) OF METALLIC SHEET MATERIALS
A description is not available for this item.
June 29, 1978
STANDARD TEST METHOD FOR TENSILE STRAIN-HARDENING EXPONENTS (N-VALUES) OF METALLIC SHEET MATERIALS (R 1984)(E1-1984)
A description is not available for this item.

References

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