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ASTM B939-05

Historical Revision

Standard Test Method for Radial Crushing Strength, <emph type="bdit">K</emph>, of Powder Metallurgy (PM) Bearings and Structural Materials

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1.1 This test method covers the equipment and laboratory procedure for the determination of the radial crushing strength of materials using either a plain powder metallurgy (P/M) bearing or a hollow cylindrical test specimen. This is a destructive test that produces quantitative results.

1.2 Limitations

1.2.1 The principle of this procedure is based on the material being tested having minimal ductility. The permanent deflection of the cylinder during the test should not exceed 10 % of the outside diameter.

1.2.2 The radial crushing strength test results should be used only as a guide if the test specimen has a wall thickness that is greater than one-third of the outside diameter. These test results should then only be used for comparison with data from the test specimens of like materials and similar dimensions.

1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

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.


SDO ASTM: ASTM International
Document Number B939
Publication Date Oct. 1, 2005
Language en - English
Page Count 3
Revision Level 05
Supercedes
Committee B09.04
Publish Date Document Id Type View
April 1, 2021 B0939-21 Revision
April 1, 2015 B0939-15 Revision
Nov. 1, 2009 B0939-09 Revision
Oct. 1, 2005 B0939-05 Revision