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 10:24
generally considered a measure of the abrasion or wear resistance of the plastic materials in question.
Indentation hardness is used as an indication of cure of some thermosetting materials at room temperature. Generally, an uncured specimen has a hardness reading below normal.
Each Rockwell hardness scale in Table 1 is an extension of the proceeding less severe scale, and while there is some overlap between adjacent scales, a correlation table is not desirable. Readings on one material may be s
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