- Standard No.
- GB 223.20-1982
- Language
- Chinese
- Release Date
- 1982
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Replace By
-
GB/T 223.20-1994
- Lastest
-
GB/T 223.20-1994
GB 223.20-1982 history
- 1994 GB/T 223.20-1994 Methods for chemical analysis of iron steel and alloy.The Potentiometric titration method for the determination of cobalt content
- 1982 GB 223.20-1982 Chemical analysis of iron,steel and alloy--The determination of cobalt by the potentiometric titration method
GB 223.20-1982 Chemical analysis of iron,steel and alloy--The determination of cobalt by the potentiometric titration method was changed to GB/T 223.20-1994 Methods for chemical analysis of iron steel and alloy.The Potentiometric titration method for the determination of cobalt content.