GB/T 38470-2019 Recycling materials for brass

GB/T 38470-2023 Recycling material for copper alloy

GB/T 5121.1-1996 Copper and copper alloys—Determination of copper content GB/T 5121.1-2008 Methods for chemical analysis of copper and copper alloys—Part 1:Determination of copper content GB/T 5121.2-1996 Copper and copper alloys—Determination of phosphorus content GB/T 5121.2-2008 Methods for chemical analysis of copper and copper alloys—Part 2:Determination of phosphorus content GB/T 5121.3-1996 Copper and copper alloys—Determination of lead content GB/T 5121.3-2008 Methods for chemical analysis of copper and copper alloys—Part 3:Determination of lead content GB/T 5121.4-1996 Copper and copper alloys—Determination of carbon and sulfur content GB/T 5121.4-2008 Methods for chemical analysis of copper and copper alloys—Part 4:Determination of carbon and sulfur content GB/T 5121.5-1996 Copper and copper alloys—Determination of nickel content GB/T 5121.5-2008 Methods for chemical analysis of copper and copper alloys—Part 5:Determination of nickel content GB/T 5121.6-1996 Copper and copperr alloys—Determination of bismuth content GB/T 5121.6-2008 Methods for chemical analysis of copper and copper alloys—Part 6:Determination of bismuth content GB/T 5121.7-1996 Copper and copper alloys—Determination of arsenic content GB/T 5121.7-2008 Methods for chemical analysis of copper and copper alloys—Part 7:Determination of arsenic content GB/T 5121.8-1996 Copper and copper alloys—Determination of oxygen content GB/T 5121.8-2008 Methods for chemical analysis of copper and copper alloys—Part 8:Determination of oxygen content GB/T 5121.8-2024 Methods for chemical analysis of copper and copper alloys—Part 8:Determination of oxygen,nitrogen and hydrogen contents GB/T 5121.9-1996 Copper and copper alloys—Determination of iron content GB/T 5121.9-2008 Methods for chemical analysis of copper and copper alloys—Part 9:Determination of iron content GB/T 5121.10-1996 Copper and copper alloys—Determination of tin content GB/T 5121.10-2008 Methods for chemical analysis of copper and copper alloys—Part 10:Determination of tin content GB/T 5121.11-1996 Copper and copper alloys—Determination of zinc content GB/T 5121.11-2008 Methods for chemical analysis of copper and copper alloys—Part 11:Determination of zinc content GB/T 5121.12-1996 Copper and copper alloys—Determination of antimony content GB/T 5121.12-2008 Methods for chemical analysis of copper and copper alloys—Part 12:Determination of antimony content GB/T 5121.13-1996 Copper and copper alloys—Determination of aluminium content GB/T 5121.13-2008 Methods for chemical analysis of copper and copper alloys—Part 13:Determination of aluminium content GB/T 5121.14-1996 Copper and copper alloys—Determination of manganese content GB/T 5121.14-2008 Methods for chemical analysis of copper and copper alloys—Part 14:Determination of manganese content GB/T 5121.15-1996 Copper and copper alloys—Determination of cobalt content GB/T 5121.15-2008 Methods for chemical analysis of copper and copper alloys—Part 15:Determination of cobalt content GB/T 5121.16-1996 Copper and copper alloys—Determination of chromium content GB/T 5121.16-2008 Methods for chemical analysis of copper and copper alloys—Part 16:Determination of chromium content GB/T 5121.17-1996 Copper and copper alloys—Determination of beryllium content GB/T 5121.17-2008 Methods for chemical analysis of copper and copper alloys—Part 17:Determination of beryllium content GB/T 5121.18-1996 Copper and copper alloys—Determination of magnesium content GB/T 5121.18-2008 Methods for chemical analysis of copper and copper alloys—Part 18:Determination of magnesium content GB/T 5121.19-1996 Copper and copper alloys—Determination of silver content GB/T 5121.19-2008 Methods for chemical analysis of copper and copper alloys—Part 19:Determination of silver content GB/T 5121.20-1996 Copper and copper alloys—Determination of zirconium content GB/T 5121.20-2008 Methods for chemical analysis of copper and copper alloys—Part 20:Determination of zirconium content GB/T 5121.21-1996 Copper and copper alloys—Determination of titanium content GB/T 5121.21-2008 Methods for chemical analysis of copper and copper alloys—Part 21:Determination of titanaum content GB/T 5121.22-1996 Copper and copper alloys—Determination of cadmium content GB/T 5121.22-2008 Methods for chemical analysis of copper and copper alloys—Part 22:Determination of cadmium content GB/T 5121.23-1996 Copper and copper alloys—Determination of silicon content GB/T 5121.23-2008 Methods for chemical analysis of copper and copper alloys—Part 23:Determination of silicon content GB/T 5121.24-2008 Methods for chemical analysis of copper and copper alloys—Part 24:Determination of selenium and tellurium content GB/T 5121.25-2008 Methods for chemical analysis of copper and copper alloys—Part 25:Determination of boron content GB/T 5121.26-2008 Methods for chemical analysis of copper and copper alloys—Part 26:Determination of mercury content GB/T 5121.27-2008 Methods for chemical analysis of copper and copper alloys—Part 27:The inductively coupled plasma atomic emission spectromertric method GB/T 5121.28-2010 Method for chemical analysis of copper and copper alloys—Part 28:Determination of chromium,iron,manganese,cobalt,nickel,zinc,arsenic,selenium,silver,cadmium,tin,antimony,tellurium,lead and bismuth content—Inductively coupled plasma-mass spectrum method GB/T 5121.28-2021 Methods for chemical analysis of copper and copper alloys—Part 28:Determination of chromium,iron,manganese,cobalt,nickel,zinc,arsenic,selenium,silver,cadmium,tin,antimony,tellurium,lead and bismuth content—Inductively coupled plasma-mass spectrometry GB/T 5121.29-2015 Methods for chemical analysis of copper and copper alloys—Part 29:Determination of aluminium oxide content GB/T 6682-1992 Water for analytical laboratory use—Specification and test methods GB/T 6682-2008 Water for analytical laboratory use—Specification and test methods 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 YS/T 482-2005 Methods for analysis of copper and copper alloys—The atomic emission spectrometry YS/T 482-2022 Copper and Copper Alloy Analysis Methods: Spark Discharge Atomic Emission Spectrometry YS/T 483-2005 Methods for analysis of copper and copper alloys—X-Ray fluorescence spectrometric(wavelength dispersive) YS/T 483-2022 Copper and Copper Alloy Analysis Method: X-Ray Fluorescence Spectroscopy (Wavelength Dispersive Type)