ISO 4140:1979現行
Ferrochromium and ferrosilicochromium - Determination of chromium content - Potentiometric method
出版：International Organization for Standardization
專家解讀視頻
Applies to all grades of these ferroalloys. Specifies principle, reagents, apparatus, sample, procedure, expression of results and test report.
UNI ISO 4140:1994 - Identical
JIS G 1313:2000 - Equivalent
JIS G 1325:2000 - Equivalent
AS 3587.3-1991 - Equivalent
BS 6200-3.10.4:1985 - Equivalent
NFA 10 405:1976 - Similar
KS D ISO 4140:2008 - Identical
