BS 4490:1989被替代
Methods for micrographic determination of the grain size of steel
出版：British Standards Institution
專家解讀視頻
基本信息
標準編號： BS 4490:1989
發布時間：1989/6/30 0:00:00
標準類別：Standard
出版單位：British Standards Institution
標準頁數：36
標準簡介
Determination of ferrite or austenite grain sizes and the size of grains containing aggregate phases, e.g. pearlite. Methods for revealing the grain and for estimating the mean size of the microstructural constituent.
標準備注
? British Standards Institution 2013
Amendment notes:
AMD 6597 published 31 January 1991
AMD 8305 published 15 November 1994
本標準替代的舊標準
替代本標準的新標準
