- Standard No.
- GB/T 223.20-1994
- Language
- Chinese, Available in English version
- Release Date
- 1994
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Latest
-
GB/T 223.20-1994
- Replace
-
GB 223.20-1982
- Scope
- This standard specifies the determination of cobalt content by potentiometric titration. This standard is applicable to the determination of drill bit in alloy steel, superalloy and precision alloy. Measuring range: more than 3.00%.
GB/T 223.20-1994 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/T 223.20-1994 Methods for chemical analysis of iron steel and alloy.The Potentiometric titration method for the determination of cobalt content has been changed from GB 223.20-1982 Chemical analysis of iron,steel and alloy--The determination of cobalt by the potentiometric titration method.