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ASTM B930-03(2008)
Standard Test Method for Rating Grain Size and Frequency of Abnormally Large Grains in Cemented Tungsten Carbides (Hardmetals)
STANDARD published on 1.4.2008
The information about the standard:
Designation standards: ASTM B930-03(2008)
Note: WITHDRAWN
Publication date standards: 1.4.2008
SKU: NS-8838
The number of pages: 2
Approximate weight : 6 g (0.01 lbs)
Country: American technical standard
Category: Technical standards ASTM
Annotation of standard text ASTM B930-03(2008) :
Keywords:
abnormally large grains, cemented carbides, cemented tungsten carbide, E-rating, hardmetals, L-rating, microstructure, Abnormally large grains, Acceptance criteria/testing--metals/alloys, Cemented carbides, Cemented tungsten carbides, E-rating, Grain size, Hardmetals, L-rating, Microstructures, ICS Number Code 77.160 (Powder metallurgy)
Additional information
| Significance and Use | ||||||||
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The microstructure and grain growth of cemented tungsten carbides affect the material's mechanical and physical properties. The grain size and distribution will affect the material's wear resistance and fracture toughness. Abnormally large grains as compared to the background may introduce an area of weakness in a sintered part. This test method may be used in acceptance testing of cemented tungsten carbide materials or the tungsten carbide powder used in their manufacture. The specified grain size used for the E-Rating is to be agreed upon between purchaser and supplier. |
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| 1. Scope | ||||||||
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1.1 This test method describes a procedure for measuring abnormally large grains and the frequency of those grains in cemented tungsten carbides (hardmetals). 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. |
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| 2. Referenced Documents | ||||||||
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