WITHDRAWN, NO REPLACEMENT
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This practice for the visual comparison and classification of the apparent grain size and distribution of cemented tungsten carbides was limited to cemented tungsten carbides that contain approximately 6, 10, and 18 % cobalt.
Formerly under the jurisdiction of Committee B09 on Metal Powders and Metal Powder Products, this practice was withdrawn in September 2010. This practice was withdrawn without replacement since it has shown little use in the industry. Also, all of the photomicrographs needed to be replaced with photomicrographs with micron markers, which would be difficult to reproduce.
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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
B657 Guide for Metallographic Identification of Microstructure in Cemented Carbides
B665 Guide for Metallographic Sample Preparation of Cemented Tungsten Carbides