GB/T 8320-2003 Copper-Tungsten and Silver-Tungsten electrical contacts

GB 8320-1987

GB/T 8320-2017 Copper-tungsten and silver-tungsten electrical contacts

JB/T 8753 GB/T 228-2002 Metallic materials—Tensile testing at ambient temperature GB/T 228.1-2010 Metallic materials—Tensile testing—Part 1:Method of test at room temperature GB/T 228.1-2021 Metallic materials—Tensile testing—Part 1:Method of test at room temperature GB/T 228.2-2015 Metallic materials—Tensile testing—Part 2:Method of test at elevated temperature GB/T 228.3-2019 Metallic materials—Tensile testing—Part 3:Method of test at low temperature GB/T 228.4-2019 Metallic materials—Tensile testing—Part 4:Method of test in liquid helium GB/T 2828.1-2003 Sampling procedures for inspection by attributes—Part 1:Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection GB/T 2828.1-2012 Sampling procedures for inspection by attributes—Part 1:Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection GB/T 2900.4-1994 Electrotechnical terminology—Special alloys for electrical equipment GB/T 2900.4-2008 Electrotechnical terminology Special alloys for electrical equipment GB/T 5586-1998 Test methods for essential porperty of electric contact material GB/T 5586-2016 Test methods for essential property of electrical contact materials GB/T 5587-2003 Basic shapes,dimensions,symbols and notations of silver based electrical contacts GB/T 5587-2016 Basic shapes,dimensions,symbols and notations of silver based electrical contacts JB/T 4107.1-2014 Electro-contact material chemical analysis methods - Part 1: General principles and guidelines JB/T 4107.2-2014 Electro-contact material chemical analysis methods - Part 2: Determination of copper content in copper-tungsten alloys JB/T 4107.3-2014 JBT 4107.3-2014 Electro-contact material chemical analysis methods Part 3: Determination of carbon content in silver graphite for silver graphite material JB/T 4107.4-2014 Chemical Analysis Methods for Electrical Contacts Materials - Part 4: Determination of Silver Content in Silver-Tungsten Alloys JB/T 4107.5-2014 Electric contact material chemical analysis methods - Part 5: Determination of nickel content in silver-nickel alloys. (English translation only) JB/T 4107.6-2014 Electro-contact material chemical analysis methods - Part 6: Determination of iron content in silver-iron alloys JB/T 5351-2014 JB/T 5351-2014 Vacuum Switch Contact Material Basic Performance Test Method JB/T 4107.1-1999 Electro-contact material chemical analysis methods: General principles and general provisions JB/T 4107.2-1999 Electro-contact material chemical analysis method - Determination of copper content in copper-tungsten (iodometric method) JB/T 4107.4-1999 Electro-contact material chemical analysis method Determination of silver content in silver-tungsten (iodimetric method) JB/T 4107.5-1999 Electro-contact material chemical analysis method Determination of nickel content in silver-nickel (EDTA capacity method) JB/T 4107.6-1999 Electro-contact material chemical analysis method - Determination of iron content in silver-iron (Determination of iron content using potassium dichromate method) JB/T 4107.7-1999 Electro-contact material chemical analysis method for determination of carbon content in silver graphite (carbon content determination by gas volume capacity method) JB 5351-1991 Vacuum Switch Contact Materials - Basic Performance Test Methods JB/T 8985-1999, Methods for Metallographic Examination of Electrical Contact Materials