JB/T 7775.1-1995 Copper tungsten carbide vacuum contact material chemical analysis method iodine method for determination of copper content (English Version)
This standard specifies the method for determination of copper content in copper-tungsten carbide vacuum contact materials. This standard is applicable to the determination and measurement range of copper content in copper-tungsten carbide vacuum contact materials. 15.00%~55.00%.
JB/T 7775.1-1995 history
2008JB/T 7775.1-2008 Test methods for chemical analysis of copper-tungsten-tungsten carbide electric contact material. Part 1: Determination of copper content
1995JB/T 7775.1-1995 Copper tungsten carbide vacuum contact material chemical analysis method iodine method for determination of copper content