JB/T 7778.1-2008 Test methods for chemical analysis of silver-tungsten carbide electric contact material.Part 1:Determination of silver content (English Version)
This part of JB/T 7778 specifies the method for determining the amount of silver in silver tungsten carbide electrical contact materials. This section applies to the determination of the silver mass fraction in silver tungsten carbide electrical contact materials. Measuring range: 80.00%-90.00%.
JB/T 7778.1-2008 history
2008JB/T 7778.1-2008 Test methods for chemical analysis of silver-tungsten carbide electric contact material.Part 1:Determination of silver content
1995JB/T 7778.1-1995 Methods of chemical analysis of silver tungsten carbide electrical contact materials Determination of silver content by thiocyanate volumetric method