1 Scope
This Part of GB/T 223 specifies a method for the determination of the sulfur content in steel and iron using an infrared absorption method after combustion in an induction furnace.
The method is applicable to a sulfur content of between 0.10 %~0.35 %.
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.
GB/T 6005 Test Sieves - Metal Wire Cloth Perforated Metal Plate and Electroformed Sheet - Nominal Sizes of Openings (GB/T 6005-2008, ISO 565: 1990, MOD)
GB/T 6379.1 Accuracy (Trueness and Precision) of Measurement Methods and Results - Part 1: General Principles and Definitions (GB/T 6379.1-2004, ISO 5725-1: 1994, 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 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 and Materials
5 Apparatus
6 Sampling and Preparation of the Test Samples
7 Analytical Procedure
8 Expression of Results
9 Procedure for Samples Containing Fine Powder
10 Test Report
Appendix A (informative) Features of Commercial High-frequency Induction Furnaces and Infrared Carbon Analysers
Appendix B (informative) Additional Information on the International Cooperative Tests
Appendix C (informative) Graphical Representation of Precision Data
