GB/T 45329-2025 Precious metals and their alloys wrought for ignition electrodes

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 1424-1996 Method of measurement of resistivity of precious metals and their alloys GB/T 2523-1990 Cold rolled sheet(strip)—Measuring method for surface roughness GB/T 2523-2008 Measuring method of surface roughness and peak count for cold-rolled metal sheet(strip) GB/T 2523-2022 Measuring method of surface roughness,peak count and waviness for cold-rolled metal sheet and strip GB/T 4340.1-1999 Metallic materials—Vickers hardness test—Part 1:Test method GB/T 4340.1-2009 Metallic materials—Vickers hardness test—Part 1:Test method GB/T 4340.1-2024 Metallic materials—Vickers hardness test—Part 1:Test method GB/T 8170-1987 Rules for rounding off of numberical values GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values GB/T 15072.6-2008 Test method of precious metal alloys—Determination of iridium contents for platinum, palladium alloys—Electricity titration with ferrous sulfate GB/T 15072.14-2008 Test method of precious metal alloys—Determination of aluminium and nickel contents for silver alloys—Inductively coupled plasma atomic emission spectrometry GB/T 15077-1994 Geometric size measuring methods of precious metals and their alloy materials GB/T 15077-2008 Geometric size measuring methods of precious metals and their alloy materials GB/T 23275-2009 Methods for chemical analysis of ruthenium determination of lead,iron,nickel,aluminum,copper,silver,gold,platinum,palladium, rhodium,iridium and silicon in ruthenium powder by glow discharge mass spectrometry GB/T 36592-2018 Methods for chemical analysis of rhodium—Determination of platinum,ruthenium,iridium,palladium,gold,silver,copper,iron,nickel,aluminum,lead,manganese,magnesium,tin,zinc,silicon contents—Inductively coupled plasma mass spectrometry GB/T 36593-2018 Method for chemical analysis of iridium powder—Determination of silver,gold,palladium,rhodium,ruthenium,lead,platinum,nickel,copper,iron,tin,zinc,magnesium,manganese,aluminum contents—Inductively coupled plasma atomic emission spectrometry YS/T 201-2007 Sheets and bands of precious metals and their alloys YS/T 201-2018 Precious metal and its alloy plates and strips YS/T 203-2009 Threads,wires,rods of precious metals and their alloys YS/T 203-2023 Precious metal and its alloy wires, cables, bars YS/T 561-2009 Method for chemical analysis of precious metals alloys—Platinum-rhodium alloys—Determination of rhodium content—Hexaammine cobalt nitrate gravimetriy YS/T 562-2009 Method for chemical analysis of precious metals alloys—Platinum-ruthenium alloys—Determination of ruthenium content—Thiourea spectrophotometry YS/T 563-2009 Methods for chemical analysis of precious metals alloys—Platinum-palladium-rhodium alloys—Determination of palladium and rhodium content—Diacetyldioxime gravimetriy,tin (Ⅱ)chloride spectrophotometry YS/T 1379-2020 Determination of platinum, palladium, rhodium, iridium, ruthenium, gold, silver, aluminum, bismuth, chromium, copper, iron, nickel, lead, magnesium, manganese, tin, zinc, silicon and their contents using inductively coupled plasma atomic emission spectroscopy YS/T 1493-2021 Highly pure platinum chemical analysis method for determination of impurity element content: glow discharge mass spectrometry YS/T 1495-2021 The determination of impurity element content in high purity rhodium by glow discharge mass spectrometry YS/T 1506-2021 The Chemical Analysis Method for High Purity Iridium: Determination of Impurity Element Content: Glow Discharge Mass Spectrometry