This standard specifies the method for the determination of cobalt content in copper and copper alloys. This standard applies to the determination of cobalt content in copper and copper alloys: determination range: 0.020% to 1.00%.
GB/T 5121.10-1996 history
2008GB/T 5121.10-2008 Methods for chemical analysis of copper and copper alloys.Part 10: Determination of tin content
1996GB/T 5121.10-1996 Copper and copperr alloys--Determination of tin content