BS 4490:1969被替代
Methods for the determination of the austenitic grain size of steel
出版：British Standards Institution
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基本信息
标准编号： BS 4490:1969
发布时间：1969/8/29 0:00:00
标准类别：Standard
出版单位：British Standards Institution
标准页数：0
标准简介
Methods, depending on steel composition, of determination by comparison with standard charts. Test piece preparation, description of methods, measurement of grain size , reporting, standard grain size charts. Appendix gives etching reagents.
标准备注
© British Standards Institution 2013
替代本标准的新标准
等同采用的国际标准
ISO 643:2003 - Equivalent
