JB/T 7774.4-2008
Test methods for chemical analysis of silver-zinc oxide electric contact material.Part 4:Determination of nickel content (English Version)

Standard No.

JB/T 7774.4-2008

Language

Chinese, Available in English version

Release Date

2008

Published By

Professional Standard - Machinery

Latest

JB/T 7774.4-2008

Replace

JB/T 7774.4-1995

Scope

This part of JB/T 7774 specifies the method for determination of nickel content in silver zinc oxide electrical contact materials. This section applies to the determination of the nickel mass fraction in silver-zinc oxide electrical contact materials. Measuring range: 0.05%-0.30%.

JB/T 7774.4-2008 history

• 2008 JB/T 7774.4-2008 Test methods for chemical analysis of silver-zinc oxide electric contact material.Part 4:Determination of nickel content
• 1995 JB/T 7774.4-1995 Silver zinc oxide electrical contact material chemical analysis method flame atomic absorption spectrometry determination of nickel content