Standard No.:	GB/T 223.70-2008
English Name:	Iron steel and alloy - Determination of iron contents - O-phenanthroline spectrophotometric method
Chinese Name:	钢铁及合金 铁含量的测定 邻二氮杂菲分光光度法
Chinese Classification:	H11    Steel and iron alloy analysis method
Professional Classification:	GB    National Standard
ICS Classification:	77.080.01 77.080.01    Ferrous metals in general 77.080.01
Issued by:	AQSIQ; SAC
Issued on:	2008-5-13
Implemented on:	2008-11-1
Status:	valid
Superseding:	GB/T 223.70-1989 GB 223.70-1989 Methods for chemical analysis of iron steel and alloy; The O-Phenanthroline spectrophotometric method for the determination of iron content
Language:	English
File Format:	PDF
Word Count:	3000 words
Price(USD):	110.0
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1 Scope This Part of GB/T 223 specifies a method for the determination of the iron content using an o-Phenanthroline spectrophotometric method. This Part is applicable to determination of iron content between 0.10 % (mass fraction) and 1.00 % (mass fraction) in high temperature alloy and precision alloy. 2 Normative References The following standards contain provisions which, through reference in this text, constitute provisions of this Part of GB/T 223. 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 6379.1 Accuracy (Trueness and Precision) of Measurement Methods and Results - Part 1: General Principles and Definitions GB/T 6379.2 Accuracy (Trueness and Precision) of Measurement Methods and Results-Part 2: Basic Method for the Determination of Repeatability and Reproducibility of a Standard Measurement Method GB/T 20066 Steel and Iron-Sampling and Preparation of Samples for the Determination of Chemical Composition