BS 891:1989被替代
Methods for hardness test (Rockwell method) and for verification of hardness testing machines (Rockwell method)
出版：British Standards Institution
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基本信息
标准编号： BS 891:1989
发布时间：1989/6/30 0:00:00
标准类别：Standard
出版单位：British Standards Institution
标准页数：20
标准简介
Method for determining hardness of metals at room temperature and methods for direct and indirect verification of testing machines.
标准备注
© British Standards Institution 2013
Replaced by notes:
Replaced by Parts 1 to 3 of BS EN 10109.
