GB/T 223.12-1991: Methods for chemical analysis of iron, steel and alloy. The sodium carbonate separation-diphenyl carbazide photometric method for the determination of chromium content

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Scope

This Standard specifies the sodium carbonate separation-diphenyl carbazide
photometric method for the determination of chromium content.
This Standard is applicable to the determination of chromium content in
carbon steel, low alloy steel and precision alloy. The determination range.
0.005% ~ 0.500%.

Basic Data

Standard ID	GB/T 223.12-1991 (GB/T223.12-1991)
Description (Translated English)	Methods for chemical analysis of iron, steel and alloy. The sodium carbonate separation-diphenyl carbazide photometric method for the determination of chromium content
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	H11
Classification of International Standard	77.08
Word Count Estimation	5,519
Date of Issue	9/6/1991
Date of Implementation	6/1/1992
Older Standard (superseded by this standard)	GB 223.12-1982
Issuing agency(ies)	State Bureau of Technical Supervision
Summary	This standard specifies the use of sodium carbonate separation - Diphenylcarbazide hydrazine spectrophotometric determination of chromium content. This standard applies to carbon steel, low alloy steel and precision determination of chromium content of the alloy. Measuring range: 0. 005% to 0. 500%.