ASTM D785塑料和电绝缘材料洛氏硬度的标准试验方法
日期:2012-02-08 10:25
the Rockwell hardness number, and
e
=
the depth of impression after removal of the major load, in units of 0.002 mm. This relation only holds for the E, M, L, R, and K scales.
A Rockwell hardness number is directly related to the indentation hardness of a plastic material, with the higher the reading the harder the material.
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