ASTM-E646 2007

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E646-07 Standard Test Method for Tensile Strain-Hardening Exponents (n -Values) of Metallic Sheet Materials

Published By	Publication Date	Number of Pages
ASTM	2007	9

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

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Description

ASTM E646-07

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 fit the entire stress-strain curve between yield and necking. If such is the case, more than one value of the strain-hardening exponent can be obtained (2).

1.2 This test method is 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).

1.3 The values stated in inch-pound units are to be regarded as the standard. The SI equivalents shown may be approximate.

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/E0646-07

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology
2	Summary of Test Method Significance and Use Apparatus Sampling Test Specimens Procedure
3	FIG. 1
4	Calculations FIG. 2
5	Report Precision and Bias TABLE 1
6	X1. BASIC WORKSHEET FOR THE LINEAR RELATIONSHIP X1.1 X1.2 X1.3 TABLE 2 TABLE 3
7	TABLE X1.1
8	TABLE X1.2
9	REFERENCES

Additional information

Standard Title	E646-07 Standard Test Method for Tensile Strain-Hardening Exponents (n -Values) of Metallic Sheet Materials
Published Code	ASTM
Publication Date	2007
Pages Count	9
ICS Codes	77.140.50 - Flat steel products and semi-products