1 Scope
This Part of GB/T 223 specifies an infrared absorption method after combustion in an induction furnace for the determination of sulfur content in steel and iron.
The Part is applicable to sulfur contents between 0,002 % (m/m) and 0.l0% (m/m).
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.
Accuracy (Trueness and Precision) of Measurement Methods and Results Part 1: General Principles and Definitions (GB/T 6379.1-2004, ISO 5725-1:1 994, IDT)
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 6379.2-2004, ISO 5725-2:1994, IDT)
GB/T 12805 Laboratory Glassware - Burettes (GB/T 12805-1991, neq ISO 385:1984)
GB/T 12806 Laboratory glassware - One-mark Volumetric Flasks (GB/T 12806-1991, eqv ISO 1042:1983)
GB/T 12808 Laboratory Glassware - One-mark Pipettes (GB/T 12808-1991, eqv ISO 648:1977)
GB/T 20066 Steel and Iron - Sampling and Preparation of Samples for the Determination of Chemical Composition (GB/T 20066-2006, ISO 14284:1996, IDT)
ISO 5725-3 Accuracy (Trueness and Precision) of Measurement Methods and Results - Part 3: Intermediate Measures of the Precision of a Standard Measurement Method
Foreword I
1 Scope
2 Normative References
3 Principle
4 Reagents
5 Apparatus
6 Sampling
7 Procedure
8 Expression of Results
9 Test Report
Appendix A (Informative) Additional Information on the International Cooperative Tests
Appendix B (Informative) Graphical Representation of Precision Data
Appendix C (Informative) Features of Commercial High-frequency Induction Furnaces and Infrared Sulfur Analysers
