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ASTM B311 - 22

Standard Test Method for Density of Powder Metallurgy (PM) Materials Containing Less Than Two Percent Porosity

Warning: ASTM standards for reading are viewed through the client area. Thefilescannot be downloaded.
Edition date: 2022-09-01
In Force
Available languages: English
Summary:

Keywords: cemented carbides; density; hard metals; metal injection molded (MIM) parts; powder forged (PF) parts; powder metallurgy (PM); powder metallurgy;
Scope:

1.1 This test method covers the determination of density for powder metallurgy (PM) materials containing less than two percent porosity and for cemented carbides. This test method is based on the water displacement method.

Note 1: A test specimen that gains mass when immersed in water indicates the specimen contains surface-connected porosity. Unsealed surface porosity will absorb water and result in calculated density values higher than the true value. This test method is not applicable if this problem occurs, and Test Methods B962 should be used instead.

1.2 Units—With the exception of the values for density and the mass used to determine density, for which the use of the gram per cubic centimetre (g/cm3) and gram (g) units is the long-standing industry practice, the values in SI units are to be regarded as standard. The values given in parentheses after SI units 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ICS: 77.160-Powder metallurgy
CTN: B09.11 - B09.11

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