ISO 3738-1: 1982 《硬質(zhì)合金 洛氏硬度試驗（A標(biāo)尺） 第1部分：試驗方法》國際標(biāo)準(zhǔn)（英文版）

International Standard ISO 3738-1:1982ISO 3738-1-1982(英文).png


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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