Standard Historical Last Updated: Dec 31, 2010 Track Document
ASTM E855-90(2000)

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

Standard Test Methods for Bend Testing of Metallic Flat Materials for Spring Applications Involving Static Loading E0855-90R00 ASTM|E0855-90R00|en-US Standard Test Methods for Bend Testing of Metallic Flat Materials for Spring Applications Involving Static Loading Standard new BOS Vol. 03.01 Committee E28
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Significance and Use

Measurements of bending strength and modulus of elasticity in bending should be made for materials whose principal stressing mode is bending. For many materials, the tensile and compressive moduli are somewhat different. Since the bending modulus is a combination of the tensile and compressive moduli, it is often different from each of them.

Precise measurements of the modulus of elasticity in bending and bending strength require due regard for numerous variables that may affect their determination. These include (1) characteristics such as specimen orientation with respect to the rolling direction, grain size, residual stresses, previous strain history, dimensions and specimen preparation, orientation of deformed grains relative to the direction of the normal stress; and (2) test conditions, such as tem-
perature, temperature variations, condition of the test equipment and adherence to the recommended test procedure.

Scope

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

1.2 Values stated in inch-pound units are to be regarded as the standard. SI units are provided for information only.

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.

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Details
Book of Standards Volume: 03.01
Developed by Subcommittee: E28.02
Pages: 8
DOI: 10.1520/E0855-90R00
ICS Code: 21.160