JB/T 7774.3-2008
Test methods for chemical analysis of silver-zinc oxide electric contact material.Part 3:Determination of bismuth content (English Version)

Standard No.

JB/T 7774.3-2008

Language

Chinese, Available in English version

Release Date

2008

Published By

Professional Standard - Machinery

Latest

JB/T 7774.3-2008

Replace

JB/T 7774.3-1995

Scope

This part of JB/T 7774 specifies the method for determining the amount of bismuth in silver zinc oxide electrical contact materials. This section applies to the determination of the mass fraction of bismuth in silver-zinc oxide electrical contact materials. Measuring range: 0.05%-0.50%.

JB/T 7774.3-2008 history

• 2008 JB/T 7774.3-2008 Test methods for chemical analysis of silver-zinc oxide electric contact material.Part 3:Determination of bismuth content
• 1995 JB/T 7774.3-1995 Method for chemical analysis of silver zinc oxide electrical contact materials Determination of bismuth content by thiourea spectrophotometry