BS 4490(1989) : AMD 8305被替代
METHODS FOR MICROGRAPHIC DETERMINATION OF THE GRAIN SIZE OF STEEL
出版：British Standards Institution
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基本信息
標準編號： BS 4490(1989) : AMD 8305
標準類別：Standard
出版單位：British Standards Institution
標準頁數：0
標準簡介
Provides micrographic methods for determining ferrite or austenite grain sizes of steels and the size of grains containing aggregate phases. Describes methods for revealing the grain and for estimating the mean size of the microstructural constituent. The methods can be applied to determine size of any phase in a microstructure containing ferrite and/or pearlite or austenite and/or delta ferrite.
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