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.
5.1 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.
| SDO | ASTM: ASTM International |
| Document Number | B930 |
| Publication Date | Oct. 1, 2012 |
| Language | en - English |
| Page Count | 2 |
| Revision Level | 03(2012) |
| Supercedes | |
| Committee | B09.06 |