
Methods for the determination of the austenitic grain size of steel
出版:British Standards Institution

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基本信息
標準編號: BS 4490:1969
發布時間:1969/8/29 0:00:00
標準類別:Standard
出版單位:British Standards Institution
標準頁數:0
標準簡介
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.
標準備注
? British Standards Institution 2013
替代本標準的新標準
等同采用的國際標準
ISO 643:2003 - Equivalent