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ASTM B276

ASTM B276 – Standard Test Method for Apparent Porosity in Cemented Carbides

Description:

Significance and Use

4.1 Cemented carbide materials may contain small voids that, depending on the application, may affect the performance of the product. To assist users in specifying the maximum acceptable level of porosity, this test method illustrates a broad range of porosity levels for each of three porosity types. This test method is not intended to be used as a specification, but the levels shown here may be cited in specifications written by producers and users of cemented carbides.

Scope

1.1 This test method specifies procedures for the metallographic determination of apparent porosity in cemented carbides.

NOTE 1: The term “apparent porosity” is construed to mean all microstructures observed on a properly prepared, unetched surface, including structures resulting from uncombined carbon, non-metallic inclusions, etc., as well as true, inherent porosity.

Related Test Methods

ASTM D483

ASTM D4829

ASTM D4828

ASTM D4824

ASTM D482

ASTM D4815

ASTM D4814

ASTM D4812

ASTM D4811

ASTM D4810

ASTM D4809

ASTM D4808

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