Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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JB/T 7774.1-2008 Test methods for chemical analysis of silver-zinc oxide electric contact material -Part 1:Determination of zinc content 60.0 via email in 1~3 business day valid
JB/T 9552.7-1999 Methods for chemical analysis of copper-chromium-zirconium alloys The determination of magnesium by atomic absorption spectrop hotometric mithod 90.0 via email in 1~3 business day valid
JB/T 8505-2011 Test method for chemical analysis of copper-graphite electrical contact materials 90.0 via email in 1~3 business day valid
GB/T 24269-2009 Specification for CuCrFe electric contact material 110.0 via email in 1~3 business day valid
JB/T 6237.5-2008 Test methods for chemical analysis of silver powder for electric contact material—Part 5:Determinatiln of natrium content 90.0 via email in 1~3 business day valid
GB/T 13397-2008 Technical specification for silver-metaloxide electrical contacts by alloy internal oxidation method 210.0 via email in 1~3 business day valid
GB/T 5587-2016 Basic shapes,dimensions,symbols and notations of silver based electrical contacts 255.0 via email in 1~3 business day valid
GB/T 24296-2009 Standard specifications for sintered soft magnetic materials 85.0 via email in 1~3 business day valid
JB/T 7096-1993 184.0 via email in business day abolished
JB/T 9550-2011 Technical specification for copper-bismuth-silver electrical contact materials 150.0 via email in 1~3 business day valid
JB/T 9552.4-1999 Methods for chemical analysis of copper-chromium-zirconium alloys The determination of chromium by diphenel carbalide photometric method 60.0 via email in 1~3 business day valid
JB/T 4107.6-2014 Chemical Analyse Method for Electrical Contact Materials - Part 6: Determine Iron Content in the Silver-iron 75.0 via email in 1~3 business day valid
GB/T 21219-2007 Magnetic materials - Classification 520.0 via email in 1~3 business day valid
JB/T 9550-1999 Technical specification for copper-bismuth-electrical contact materials 120.0 via email in 1~3 business day superseded
GB/T 5587-1985 Basic shapes dimensions symbols and notations of silver based electrical contacts 270.0 via email in 1~3 business day abolished
JB/T 7778.4-2008 Test methods for chemical analysis of silver-tungsten carbide electric contact material-Part4:Determintion of free carbon content 60.0 via email in 1~3 business day valid
GB/T 29628-2013 Guides for methods of measurement of the magnetic properties of permanent(magnetically hard) materials by pulsed field magnetometry 100.0 via email in 1 business day valid
JB/T 7117-2008 Technical specification for high resistance alloys(Φ＜0.20mm)of electrical heating 120.0 via email in 1~3 business day valid
JB/T 5351-2014 Electric Contact Material for Vacuum Switch - Test Methods of Essential Property 105.0 via email in 1~3 business day valid
JB/T 6237.10-2008 Test methods for chemical analysis of silver powder for electric contact material—Part 10:Determinatiln of silver nitrate content 60.0 via email in 1~3 business day valid
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