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Description of ASTM-B276 2010ASTM B276 - 05(2010)Standard Test Method for Apparent Porosity in Cemented CarbidesActive Standard ASTM B276 | Developed by Subcommittee: B09.06 Book of Standards Volume: 02.05 ASTM B276Significance and Use 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. 1. Scope 1.1 This test method specifies procedures for the metallographic determination of apparent porosity in cemented carbides. Note 1The 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.
ASTM Standards B243 Terminology of Powder Metallurgy B665 Guide for Metallographic Sample Preparation of Cemented Tungsten Carbides Keywords apparent porosity; cemented carbides; hardmetals; microstructure; powder metallurgy; Cemented carbides; Microscopic examination--cemented carbides; Porosity; ICS Code ICS Number Code 77.160 (Powder metallurgy) DOI: 10.1520/B0276-05R10 ASTM International is a member of CrossRef. ASTM B276This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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