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1.1 This test method covers determination of the transverse rupture strength of sintered, including post-treated, metal powder test specimens by subjecting them to a uniformly increasing transverse force under controlled conditions. The term "transverse rupture strength" as used herein, defines the stress, calculated from the flexure formula required to break a specimen as a simple beam supported near the ends and applying the force midway between the fixed line center of the supports.
1.2 Limitations The transverse rupture test is only applicable to relatively brittle materials. In cases where a ductile specimen is being tested and the permanent deflection as a result of testing exceeds 0.020 in. (0.50 mm), the test results may be questionable.
1.3 Test Method B 406 should be consulted for determining the transverse rupture strength of cemented carbides.
1.4 The values stated in inch-pound units are to be regarded as the standard. The SI values are provided 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
B243 Terminology of Powder Metallurgy
B312 Test Method for Green Strength of Specimens Compacted from Metal Powders
B406 Test Method for Transverse Rupture Strength of Cemented Carbides
B925 Practices for Production and Preparation of Powder Metallurgy (PM) Test Specimens
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ICS Number Code 77.160 (Powder metallurgy)