Chinese Standard: GB/T 3849.2-2010

Hardmetals—Rockwell hardness test (scale A)—Part 2:Preparation and calibration of standard test blocks

IDT  ISO 3738-2:1988

全国有色金属标准化技术委员会(SAC/TC 243)

GB/T 3849的本部分规定了由用于校正洛氏硬度机（A标尺）和压头的母标准试块制备和校准硬质合金一级标准试块、二级标准试块和工作标准试块。

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