- Standard No.
- GB/T 4702.7-1984
- Language
- Chinese
- Release Date
- 1984
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Replace By
-
GB/T 4702.4-2008
-
GB/T 4702.17-1988
- Lastest
-
GB/T 4702.17-2016
- Scope
- This standard applies to the determination of the amount of iron in metallic chromium. Measuring range: less than 1.00%.
GB/T 4702.7-1984 history
- 2016 GB/T 4702.17-2016 Chromium metal─Determination of oxygen, nitrogen and hydrogen content─Inert gas fusion thermal infrared detection method and conductivity method
- 2008 GB/T 4702.4-2008 Chromium metal. Determination of iron content. EDTA titrimetric method and flame atomic absorption spectrometric method
- 1984 GB/T 4702.7-1984 Methods for chemical analysis of chromium metal--The atomic absorption spectrophotometric method for the determination of iron content
GB/T 4702.7-1984 Methods for chemical analysis of chromium metal--The atomic absorption spectrophotometric method for the determination of iron content was changed to GB/T 4702.4-2008 Chromium metal. Determination of iron content. EDTA titrimetric method and flame atomic absorption spectrometric method.