Standard No.:	GB/T 223.13-2000
Chinese Name:	钢铁及合金化学分析方法 硫酸亚铁铵滴定法测定钒含量
English Name:	Methods for chemical analysis of iron, steel and alloy－The ammonium ferrous sulfate titration method for the determination of vanadium content
Professional Classification:	H11 Steel and iron alloy analysis method
Professional Classification:	GB National Standard
ICS Classification:	77.040.30 Chemical analysis of metals
Issued by:
Issued on:	2000-04-01
Implemented on:	2000-01-01
Status:	VALID
Language:	English
File Format:	PDF
Word Count:	4000 words
Price(USD):	120 (USD)
Delivery:	via email in 1-3 business day

1 Scope

This Standard specifies ammonium ferrous sulfate titration method for determination of vanadium content.
This Standard is applicable to determination of vanadium [0.100% (m/m)~3.50% (m/m)] in steel, iron or alloy.
This Standard is not applicable to determination for vanadium content in the following samples: test portions containing cobalt > 20% (m/m) or cerium > 0.01% (m/m); test portions containing chromium > 20% (m/m), manganese > 20% (m/m) or wolfram > 18%; test portions containing vanadium < 0.4% (m/m).

2 Normative References

The provisions of the following standard, through reference into this Standard, constitute provisions of this Standard. When this standard is published, the editions indicated are valid. All standards are subject to revision, and Parties concerned are encouraged to discuss the possibility of applying the latest edition of the following standards.
GB/T 222-1984 Permissible Tolerances for Chemical Composition of Steel Products
GB 6379-86 Precision of Test Methods - Determination of Repeatability and Reproducibility for a Standard Test Method by Interlaboratory Tests