1 Scope
This Part of GB/T 223 specifies the inert gas impulse fusion heat conductivity method to determine the hydrogen content in steel and iron.
This method is applicable to the determination of hydrogen content, the mass fraction of which is 0.20μg/g~30.0 μg /g in steel and iron.
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 6379.1-2004, 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 14265 General Rule of Chemical Analysis for Hydrogen, Oxygen, Nitrogen, Carbon and Sulfur in Metals Materials
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)
Foreword I
1 Scope
2 Normative References
3 Principle
4 Reagents
5 Apparatus
6 Sampling and Sample Preparation
7 Calibration
8 Measurement
9 Result Calculation
10 Precision
11 Test Reports
Appendix A (Informative) Source Data of Precision Test - Determination of Hydrogen Content In Steel and Iron with Inert Gas Impulse Fusion Heat Conductivity Method
