ASTM-E855 2008

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E855-08 Standard Test Methods for Bend Testing of Metallic Flat Materials for Spring Applications Involving Static Loading

Published By	Publication Date	Number of Pages
ASTM	2008	9

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Category: ASTM

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Description

1.1 This standard describes three test methods for determining the modulus of elasticity in bending and the bending strength of metallic strips or sheets intended for the use in flat springs:

1.1.1 Test Method A a cantilever beam,

1.1.2 Test Method B a three-point loaded beam (that is, a beam resting on two supports and centrally loaded), and

1.1.3 Test Method C a four-point loaded beam (that is, a beam resting on two supports and loaded at two points equally spaced from each support).

1.2 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.

1.3 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.

6.1 This test method covers the determination of the modulus of elasticity in bending and the offset yield strength in bending of flat metallic strips or sheets for spring applications. The test procedure involves measurements of the applied moment and the corresponding angle of deflection of a cantilever beam. The thickness range covered is 0.015 to 0.130 in. (0.38 to 3.30 mm). This test method is not applicable for nonlinear elastic materials.

15.1 These test methods cover the determination of the modulus of elasticity in bending and the bending proof strength of flat metallic strips or sheets for spring applications. The test methods consist of deflection tests of a simple beam configuration subjected to either three- or four-point symmetrical loading. The thickness range covered is 0.010 to 0.050 in. (0.25 to 1.3 mm).

Note 3Thickness ranges outside of those specified may be agreed upon between suppliers and users.

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology Significance and Use
2	Fundamental Assumptions Scope Summary of Test Method Significance and Use Apparatus FIG. 1
3	Test Specimens Procedure FIG. 2
4	Calculation Report Precision and Bias Scope Summary of Test Methods Significance and Use
5	Apparatus Test Specimens FIG. 3
6	Procedure FIG. 4
7	Interpretation of Data Report Precision and Bias TABLE 1
8	X1. TEST METHOD A X1.1 X1.2 FIG. X1.1

Additional information

Standard Title	E855-08 Standard Test Methods for Bend Testing of Metallic Flat Materials for Spring Applications Involving Static Loading
Published Code	ASTM
Publication Date	2008
Pages Count	9

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ASTM-E855 2008

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