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ASTM B946-11

Historical Revision

Standard Test Methods for Surface Roughness of Powder Metallurgy (PM) Products

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1.1 This test method covers measuring the surface finish of powder metallurgy (PM) products at all stages of manufacturing from green compact to fully hardened finished component.

1.2 This test method provides the definition and schematic of some common surface finish parameters (Ra, Rt, and Rz ISO)

1.3 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.

1.4 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 to determine the applicability of regulatory limitations prior to use.

The surface finish of a component may be critical for certain applications, affecting properties such as wear resistance, fatigue strength, and coefficient of friction.

Surface finish may also be critical for component assembly or system performance. Dimensional fit and mating surface interaction may require certain surface finish requirements to meet performance specifications.

SDO ASTM: ASTM International
Document Number B946
Publication Date May 1, 2011
Language en - English
Page Count 3
Revision Level 11
Supercedes
Committee B09.05
Publish Date Document Id Type View
Feb. 1, 2023 B0946-23 Revision
May 1, 2011 B0946-11 Revision
June 1, 2006 B0946-06 Revision
April 1, 2016 B0946-11R16 Reaffirmation
Dec. 1, 2010 B0946-06R10 Reaffirmation