ASTM-B276 › Standard Test Method for Apparent Porosity in Cemented Carbides
Show Complete Document History
The following bibliographic material is provided to assist you with your purchasing decision:
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.
1.2 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.
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.
apparent porosity; cemented carbides; hardmetals; microstructure; powder metallurgy ;; ICS Number Code 77.160 (Powder metallurgy)
To find similar documents by ASTM Volume:
To find similar documents by classification:
This document comes with our free Notification Service, good for the life of the document.
This document is available in either Paper or PDF format.
2005 R15 EDITION
Nov. 1, 2015