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
ASTM D785 Standard Test Method for Rockwell Hardness of Plastics and Electrical Insulating Materials
ASTM D785塑料和电绝缘材料洛氏硬度的标准试验方法
A Rockwell hardness number is a number derived from the net increase in depth impression as the load on an indenter is increased from a fixed minor load to a major load and then returned to a minor load (Procedure A). A Rockwell alpha () hardness number represents the maximum possible remaining travel of a short-stroke machine from the net depth o
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