ASTM B 390 – 92 International standard

Standard Practice for Evaluating Apparent Grain Size and Distribution of Cemented Tungsten Carbides1

This widespread is issued below the fixed designation b 390; the wide variety right away following the designation shows the 12 months of unique adoption or, within the case of revision, the year of remaining revision. More than a few in parentheses indicates the yr of final reapproval. A superscript epsilon (e) shows a piece of writing trade since the ultimate revision or reapproval.

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