ASTM B390-92(2006)
Standard Practice for Evaluating Apparent Grain Size and Distribution of Cemented Tungsten Carbides
- Standard No.
- ASTM B390-92(2006)
- Release Date
- 1992
- Published By
- American Society for Testing and Materials (ASTM)
- Status
- 2010-09
- Latest
- ASTM B390-92(2006)
- Scope
The apparent size and distribution of tungsten carbide grains in cemented carbides affects the materialrsquo;wear resistance and fracture. For a given chemical composition, an increase in the average grain size will result in increased toughness and decreased wear resistance. This practice illustrates representative micro-structures for a wide range of tungsten carbide-cobalt grades. This is not intended to be used as a specification for carbide grades; producers and users may use the micrographs and the grain size chart as a guide in developing their own specifications.
1.1 This practice for the visual comparison and classification of the apparent grain size and distribution of cemented tungsten carbides is limited to cemented tungsten carbides that contain approximately 6, 10, and 18 % cobalt.
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 B390-92(2006) Referenced Document
- ASTM B657 Standard Test Method for Metallographic Determination of Microstructure in Cemented Tungsten Carbides
- ASTM B665 Standard Practice for Metallographic Sample Preparation of Cemented Tungsten Carbides
ASTM B390-92(2006) history
- 1992 ASTM B390-92(2006) Standard Practice for Evaluating Apparent Grain Size and Distribution of Cemented Tungsten Carbides
- 2000 ASTM B390-92(2000) Standard Practice for Evaluating Apparent Grain Size and Distribution of Cemented Tungsten Carbides
- 2000 ASTM B390-92(1996)e1 Standard Practice for Evaluating Apparent Grain Size and Distribution of Cemented Tungsten Carbides
