Standard No.:	GB/T 223.74-1997
Chinese Name:	钢铁及合金化学分析方法 非化合碳含量的测定
English Name:	Methods for chemical analysis of iron,steel and alloy The combustion gravimetric/gas-volumetric method for the determination of combined carbon content
Professional Classification:	H11 Steel and iron alloy analysis method
Professional Classification:	GB National Standard
ICS Classification:	77.080
Issued by:
Issued on:	1997-03-17
Implemented on:	1997-09-01
Status:	VALID
Language:	English
File Format:	PDF
Word Count:
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1 Scope

This Standard specifies the gravimetric method or gas-volumetric method after combustion in the pipe furnace for the determination of non-combined carbon content.
This Standard is applicable to the determination of non-combined carbon content with the content of 0.030 % (m/m)~ 5.00 % (m/m) in iron and carbon steel.

2 Normative References

The following standards contain provisions which, through reference in this text, constitute provisions of this standard. At time of publication, the editions indicated are valid. All standards are subject to revision, and parties using the standard shall investigate the possibility of applying the latest edition of the standards indicated below.
GB 222-84 Method of Sampling Steel for Determination of Chemical Composition and Permissible Variations for Product Analysis
GB/T 223.71-1997 Methods for Chemical Analysis of Iron, Steel and Alloy The Gravimetric Method after Combustion in the Pipe Furnace for the Determination of Carbon Content
GB/T 223.69-1997 Methods for Chemical Analysis of Iron, Steel and Alloy The Gas- Volumetric Method after Combustion in the Pipe Furnace for the Determination of Carbon Content