GB/T 223.7-2002 in English

《GB/T 223.7-2002铁粉 铁含量的测定 重铬酸钾滴定法》由TC183（全国钢标准化技术委员会）归口，TC183SC5（全国钢标准化技术委员会钢铁及合金化学成份测定分会）执行，主管部门为中国钢铁工业协会。
本标准规定了用重铬酸钾滴定法测定铁粉中铁含量的方法。本方法适用于铁粉中质量分数大于96%的铁含量的测定。

1 Scope

This Standard specifies a method for the determination of the iron content in the iron powder with a potassium dichromate titration method.
This method is applicable to the determination of iron content in iron powder with mass fraction greater than 96 %.

2 Normative References

The following standards contain provisions which, through reference in this text, constitute provisions of this Standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies.
GB/T 5314-1985 Powders for Powder Metallurgical Purposes; Sampling
GB/T 12805-1991 Laboratory Glassware-Burettes
GB/T 6379-1986 Precision of Test Methods; Determination of Repeatability and Reproducibility for A Standard Test Method by Interlaboratory Tests