International Standard ISO 3738-1:1982
Hardmetals - Rockwell hardness test (scale A) -
Part 1 : Test method
1 Scope and field of application
This part of IS0 3738 specifies the Rockwell hardness test (scale A) for hardmetals.
2 References
ISOIR 80, Rockwell hardness test IB and C scales) for steel.
ISOIR 716, Verification of Rockwell B and C scale hardness testing machines.
3 Principle
Forcing a conical diamond indenter into a test piece in two operations and measurement of the permanent increase, e, of the depth of indentation by means of a depth gauge under defined conditions.
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