GB/T 39430-2020 Specifications for the blanks of high reliability gears

GB/T 223.39-1994 Methods for chemical analysis iron,steel and alloy The sulphochlorophenol S photometric method for the determination of niobium content GB/T 223.40-1985 Methods for chemical analysis of iron, steel and alloy—The anion-exchange separation-sulphochlorophenol S photometric method for the determination of niobium content GB/T 223.40-2007 Iron,steel and alloy—Determination of niobium content by the sulphochlorophenol S spectrophotometric method GB/T 223.41-1985 Methods for chemical analysis of iron, steel and alloy—The anion-exchange separation-pyrogallol photometric method for the determination of tantalum content GB/T 223.42-1985 Methods for chemical analysis of iron, steel and alloy—The anion-exchange separation-brom opyrogallol red photometric method for the determination of tantalum content GB/T 223.43-1994 Methods for chemical analysis of iron, steel and alloy—Determination of tungsten content GB/T 223.43-2008 Iron,steel and alloy—Determination of tungsten content—Gravimetric method and spectrophotometric method GB/T 223.45-1994 Methods for chemical analysis of iron, steel and alloy—The cupral separation-xylidyl blue Ⅱphotometric method for the determination of magnesium content GB/T 223.46-1989 Methods for chemical analysis of iron, steel and alloy—The flame atomic absorption spectrometric method for the determination of magnesium content GB/T 223.47-1994 Methods for chemical analysis of iron, steel and alloy—The carrier precipitation-molybdenum blue potometric method for the determination of antimony content GB/T 223.48-1985 Methods for chemical analysis of iron, steel and alloy—The semixylenol orange photometric method for the determination of bismuth content GB/T 223.49-1994 Methods for chemical analysis of iron, steel and alloy—Extraction separation-chlorophosphonazo mA spectrophotometric method for the determination of the total rare tarth content GB/T 223.50-1994 Methods for chemical analysis of iron, steel and alloy—The phenylfluorone-CTMAB direct photometric method for the determination of tin content GB/T 223.51-1987 Methods for chemical analysis of iron，steel and alloy--The 2-(5-Bromo-2-pyridylazo)-5-diethylaminophenol photometric method for the determination of zinc content GB/T 223.52-1987 Methods for chemical analysis of iron，steel and alloy--The hydroxylamine hydrochloride-iodometric method for the determination of selenium content GB/T 223.53-1987 Methods for chemical analysis of iron，steel and alloy--The flame atomic absorption spectrophotometric method for the determination of copper content GB/T 223.54-1987 Methods for chemical analysis of iron,steel and alloy—The flame atomic absorption spectrophotometric method for the determination of nickel content GB/T 223.54-2022 Iron,steel and alloy—Determination of nickel content—Flame atomic absorption spectrometric method GB/T 223.55-2008 Iron,steel and alloy—Determination of tellurium content—Oscillo-polarographic method GB 223.57-1989 The method of chemical analysis for steel and alloys: Extraction separation-adsorption catalytic polarography for the determination of cadmium GB/T 223.58-1987 Methods for chemical analysis of iron，steel and alloy--The extraction-absorption catalytic polarographic method for the determination of manganese content GB/T 223.59-2008 Iron,steel and alloy—Determination of phosphorus content—Bismuth phosphomolybdate blue spectrophotometric method and antimony phosphomolybdate blue spectrophotometric method GB/T 223.60-1997 Methods for chemical analysis of iron,steel and alloy—The perchloric acid dehydration gravimetric method for the determination of silicon content GB/T 223.60-2024 Iron,steel and alloy—Determination of silicon content—Gravimetric method GB/T 223.61-1988 Methods for chemical analysis of iron,steel and alloy—The ammonium phosphomolybdate volumetric method for the determination of phosphorus content GB/T 223.62-1988 Methods for chemical analysis of iron,steel and alloy—The butyl acetate extraction photometric method for the determination of phosphorus content GB/T 223.63-1988 Methods for chemical analysis of iron,steel and alloy—The sodium(potassium)periodate photometric method for the determination of manganese content GB/T 223.63-2022 Iron,steel and alloy—Determination of manganese content—Sodium(potassium) periodate spectrophotometric method GB/T 223.64-1988 Methods for chemical analysis of iron,steel and alloy—The flame atomic absorption spectrometric method forthe determination of manganese content GB/T 223.64-2008 Iron,steel and alloy—Determination of manganese content—Flame atomic absorption spectrometric method GB/T 223.65-1988 Methods for chemical analysis of iron,steel and alloy—The flame atomic absorption spectrometric method for the determination of cobalt content GB/T 223.65-2012 Steel,iron and alloy—Determination of cobalt content—Flame atomic absorption spectrometric method GB/T 223.66-1989 Methods for chemical analysis of iron, steel and alloy—The thiocyanate chlorpromazine hydrochloride—chloro form extraction photometric method for the determination of tungsten content GB/T 223.67-1989 Methods for chemical analysis of iron, steel and alloy—The reducing distillation-methylene blue photometric method for the determination of sulfur content GB/T 223.67-2008 Iron,steel and alloy—Determination of sulfur content—Methylene blue spectrophotometric method GB/T 223.68-1997 Methods for chemical analysis of iron,steel and alloy The potassium iodate titration method after combustion in the pipe furnace for the determination of sulfur content GB/T 223.69-1997 Methods for chemical analysis of iron,steel and alloy The gas- volumetric method after combustion in the pipe furnace for the determination of carbon content GB/T 223.69-2008 Iron,steel and alloy—Determination of carbon contents—Gas-volumetric method after combustion in the pipe furnace GB/T 223.70-1989 Methods for chemical analysis of iron, steel and alloy—The o-phenanthroline spectrophotometric method for the determination of iron content GB/T 223.70-2008 Iron,steel and alloy—Determination of iron contents—o-Phenanthroline spectrophotometric method GB/T 223.71-1997 Methods for chemical analysis of iron,steel and alloy—The gravimetric method after combustion in the pipe furnace for the determination of carbon content GB/T 223.72-1991 Methods for chemical analysis of iron, steel and alloy—The alumina chromatographic separation-barium sulfate gravimetric method for the determination of sulphur content GB/T 223.72-2008 Iron,steel and alloy—Determination of sulfur content—Gravimetric method GB/T 223.73-1991 Methods for chemical analysis of iron, steel and alloy—The titanium trichloride-potassium dichromate volumetric method for the determination of iron content GB/T 223.73-2008 Iron,steel and alloy—Determination of iron contents—Titanium trichloride-potassium dichromate titration method GB/T 223.74-1997 Methods for chemical analysis of iron,steel and alloy—The combustion gravimetric/gas-volumetric method for the determination of combined carbon content GB/T 223.75-1991 Methods for chemical analysis of iron, steel and alloy—The methanol distillation-curcumin photometric method for the determination of boron content GB/T 223.75-2008 Iron,steel and alloy—Determination of boron content—Methanol distillation-curcumin photometric method GB/T 223.76-1994 Methods for chemical analysis iron, steel and alloy—The flame atomic absorption spectrometric method for the determination of vanadium content GB/T 223.77-1994 Methods for chemical analysis of iron, steel and alloy—The flame atomic absorption spectrometric method for the determination of calcium content GB/T 223.78-2000 Methods for chemical analysis of iron,steel and alloy—Curcumin spectrophotometric method for the determination of boron content GB/T 223.79-2007 Iron and steel—Determination of multi-element contents—X-ray fluorescence spectrometry(Routine method) GB/T 223.80-2007 Iron,steel and alloy—Determination of trace bismuth and arsenic contents—Hydride generation-atomic fluorescence spectrometric method GB/T 223.81-2007 Iron,steel and alloy—Determination of total aluminum and total boron contents—Microwave digestion-inductively coupled plasma mass spectrometric method GB/T 223.82-2007 Steel and iron—Determination of hydrogen content—Inert gas impulse fusion heat conductivity method GB/T 223.82-2018 Steel and iron—Determination of hydrogen content—Thermal conductivity/infrared method after fusion under inert gas GB/T 223.83-2009 Steel and iron—Determination of high sulfur content—Infrared absorption method after combustion in an induction furnace GB/T 223.84-2009 Steel and iron—Determination of titanium content—Diantipyrylmethane spectrophotometric method GB/T 223.85-2009 Steel and iron—Determination of sulfur content—Infrared absorption method after combustion in an induction furnace GB/T 223.86-2009 Steel and iron—Determination of total carbon content—Infrared absorption method after combustion in an induction furnace GB/T 223.87-2018 Iron, steel and alloy—Determination of calcium and magnesium—Inductively coupled plasma mass spectrometric method GB/T 223.88-2019 Iron,steel and alloy—Determination of calcium and magnesium contents—Inductively coupled plasma atomic emission spectrometric method GB/T 223.89-2019 Iron,steel and alloy—Determination of tellurium content—Hydride generation-atomic fluorescence spectrometric method GB/T 223.90-2021 Iron,steel and alloy—Determination of silicon content—Inductively coupled plasma atomic emission spectrometric method GB/T 223.91-2021 Iron,steel and alloy—Determination of copper—2,2′-Biquinoline spectrophotometric method GB/T 223.92-2023 Iron, steel and alloy—Determination of lanthanum, cerium, praseodymium, neodymium and samarium content—Inductively coupled plasma mass spectrometry GB/T 225-1988 Steel-hardenability test by end quenching(Jominy test) GB/T 225-2006 Steel—Hardenability test by end quenching (Jominy test) GB/T 226-1991 Etch test for macrostructure and defect of steels GB/T 226-2015 Test method for macrostructure and defect of steel by etching 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 229-1994 Metallic materials—Charpy notch impact test GB/T 229-2007 Metallic materials—Charpy pendulum impact test method GB/T 229-2020 Metallic materials—Charpy pendulum impact test method GB/T 231.1-2002 Metallic materials—Brinell hardness test—Part 1:Test method GB/T 231.1-2009 Metallic materials—Brinell hardness test—Part 1:Test method GB/T 231.1-2018 Metallic materials—Brinell hardness test—Part 1:Test method GB/T 1814-1979 Inspection method for steel work fractures GB/T 1979-2001 Standard diagrams for macrostructure and defect of structural steels GB/T 1979-2025 Evaluation of macrostructural defects in structural steels—Acid etching method and ultrasonic testing method GB/T 3480.5-2008 Calculation of load capacity of spur and helical gears—Part 5:Strength and quality of materials GB/T 3480.5-2021 Calculation of load capacity of spur and helical gears—Part 5:Strength and quality of materials GB/T 4162-1991 Forged and rolled steel bars—Method for ultrasonic examination GB/T 4162-2008 Forged and rolled steel bars—Method for ultrasonic testing GB/T 4162-2022 Method for ultrasonic testing of forged and rolled steel bars GB/T 6394-2002 Metal-methods for estimating the average grain size GB/T 6394-2017 Determination of estimating the average grain size of metal GB/T 10561-1989 Steel—Determination of content of non-metallic inclusion—Micrographic method using standard diagrams GB/T 10561-2005 Steel—Determination of content of nonmetallic inclusions—Micrographic method using standards diagrams GB/T 10561-2023 Determination of content of nonmetallic inclusions in steel—Micrographic method using standard diagrams GB/T 12363-1990 Classification of forging functions GB/T 12363-2005 Classification of forging functions GB/T 12363-2021 Classification of forging functions JB/T 5000.15-2007 Heavy Machinery General Technical Specification Part 15: Non-destructive Inspection for Forged Steel Parts JB/T 5000.15-1998 Heavy Machinery General Technical Specification for Nondestructive Inspection of Forged Steel Parts