This standard specifies the method for the determination of carbon content in copper-tungsten carbide vacuum contact materials. This standard is applicable to the determination and measurement range of carbon content in copper-tungsten carbide vacuum contact materials. 1.00%~5.00%.
JB/T 7775.3-1995 history
2008JB/T 7775.2-2008 Test methods for chemical analysis of copper-tungsten-tungsten carbide electric contact material. Part 2: Determination of carbon content
1995JB/T 7775.3-1995 Copper, tungsten, tungsten carbide, vacuum contact materials, chemical analysis method, gas volumetric method, determination of carbon content
JB/T 7775.3-1995 Copper, tungsten, tungsten carbide, vacuum contact materials, chemical analysis method, gas volumetric method, determination of carbon content was changed to JB/T 7775.2-2008 Test methods for chemical analysis of copper-tungsten-tungsten carbide electric contact material. Part 2: Determination of carbon content.