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Description of ASTM-B406 2010ASTM B406 - 96(2010)Standard Test Method for Transverse Rupture Strength of Cemented CarbidesActive Standard ASTM B406 | Developed by Subcommittee: B09.06 Book of Standards Volume: 02.05 ASTM B406Significance and Use This test method is used as a means of determining the quality of cemented carbide grade powders by measuring their sintered strength. It is performed on test specimens prepared to specified shape, dimensions, and surface finish; test specimens may be prepared from finished parts if size permits. There is no known standard material for this test method. The transverse rupture strength of cemented carbides is not a design value. Most commercial cemented carbides have mechanical behavior that is best classified as brittle (negligible ductility). Fracture strengths are dependent on internal or surface flaws. Examples of incoherent internal flaws are macropores, Type B porosity (see Test Method B276 ), and inclusions of foreign particles. Such flaws are randomly distributed spatially and in size within the sintered material. This imparts a statistical nature to any transverse rupture strength measurement. The stress distribution in a beam in three-point loading is non-uniform. It increases linearly along the span to a maximum at the center, and varies linearly through any section from compression on the top to tension on the bottom. The maximum tensile stress therefore occurs at center span in the bottom most fibers of the sample, and is defined as the transverse rupture strength at failure. Failure is initiated at a random flaw site, which is most probably not coincident with the maximum stress. This imparts an additional statistical nature to transverse rupture strength measurements. 1. Scope 1.1 This test method covers the determination of the transverse rupture strength of cemented carbides. 1.2 The values stated in inch-pound units are to be regarded as the standard. The SI values in parentheses are provided for information only. 1.3 This standard does not purport to address 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 B276 Test Method for Apparent Porosity in Cemented Carbides ISO Standard ISO-3327 Hardmetals--Determination of Transverse Rupture StrengthKeywords cemented carbides; fracture strength; hardmetals; tensile stress; transverse rupture strength; Flexural testing; Hard metals; Rupture/rupture strength; Strength; Tensile properties/testing--soil/rock/related materials; Transverse rupture strength; Cemented carbides; ICS Code ICS Number Code 77.160 (Powder metallurgy) DOI: 10.1520/B0406-96R10 ASTM International is a member of CrossRef. ASTM B406This 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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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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