Standard Practice for
Evaluating Apparent Grain Size and Distribution of
Cemented Tungsten Carbides1
This standard is issued under the fixed designation B 390; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
Click below to download Astm B 390 – 92 (Reapproved 2000) Pdf free
Click here to download Astm B 389 – 81 (Reapproved 2004) Pdf Free Download