Standard No.:	GB/T 223.11-2008
English Name:	Iron, Steel and Alloy - Determination of Chromium Content - Visual Titration or Potentiometric Titration Method
Chinese Name:	钢铁及合金 铬含量的测定 可视滴定或电位滴定法
Chinese Classification:	H11    Steel and iron alloy analysis method
Professional Classification:	GB    National Standard
Issued by:	AQSIQ; SAC
Issued on:	2008-09-11
Implemented on:	2009-5-1
Status:	valid
Superseding:	GB/T 223.11-1991 Methods for chemical analysis of iron, steel and alloy - ammonium sulfate oxidation volumetric method for the determination of chromium content
Language:	English
File Format:	PDF
Word Count:	6000 words
Price(USD):	80.0
Delivery:	via email in 1 business day

1 Scope This Part of GB/T 223 specifies the determination of chromium content with visual titration or potentiometric titration method. Method I of this Part is applicable to the determination of chromium content with mass fraction 0.10%~35.00% in pig iron, carbon steel, alloy steel, high-temperature alloy and precision alloy; method II of this Part is applicable to the determination of chromium content with mass fraction 0.25%~35.00% in iron and steel. 2 Normative References The following standards contain provisions which, through reference in this Part of GB/T 223, constitute provisions of this Part. 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.

Contents Foreword i 1 Scope 2 Normative References 3 Method I Visual Titration Method 4 Method II Potentiometric Titration Method 5 Test Report Annex A (Informative) Method I Source Data of Common Precision Test Annex B (Informative) Method II Additional Information of International Cooperation Test Annex C (Informative) Method II Diagram of Precision Data