GB/T 25136-2010 General checking standard for steel open die forgings

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 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 228-2002 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 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 230.1-2004 Metallic Rockwell hardness test—Part1:Test method(scales A、B、C、D、E、F、G、H、K、N、T) GB/T 230.1-2009 Metallic materials—Rockwell hardness test—Part 1:Test method(scales A、B、C、D、E、F、G、H、K、N、T) GB/T 230.1-2018 Metallic materials—Rockwell hardness test—Part 1:Test method GB/T 230.2-2002 Metallic rockwell hardness test—Part 2:Verification and calibration of hardness testers(scales A,B,C,D,E,F,G,H,K,N,T) GB/T 230.2-2012 Metallic materials—Rockwell hardness test—Part 2:Verification and calibration of testing machines GB/T 230.2-2022 Metallic materials—Rockwell hardness test—Part 2:Verification and calibration of testing machines and indenters GB/T 230.3-2002 Metallic rockwell hardness test—Part 3:Calibration of hardness reference blocks(scales A,B,C,D,E,F,G,H,K,N,T) GB/T 230.3-2012 Metallic materials—Rockwell hardness test—Part 3:Calibration of reference blocks(scales A,B,C,D,E,F,G,H,K,N,T) GB/T 230.3-2022 Metallic materials—Rockwell hardness test—Part 3:Calibration of reference blocks 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 231.2-2002 Metallic Brinell hardness test—Part 2:Verification and calibration of hardness testers GB/T 231.2-2012 Metallic materials—Brinell hardness test—Part 2:Verification and calibration of testing machines GB/T 231.2-2022 Metallic materials—Brinell hardness test—Part 2:Verification and calibration of testing machines GB/T 231.3-2002 Metallic Brinell hardness test—Part 3:Calibration of hardness reference blocks GB/T 231.3-2012 Metallic materials—Brinell hardness test—Part 3:Calibration of reference blocks GB/T 231.3-2022 Metallic materials—Brinell hardness test—Part 3:Calibration of reference blocks GB/T 231.4-2009 Metallic materials—Brinell hardness test—Part 4:Tables of hardness values 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 4236-1984 Steel—Examination by sulphur print (Baumann method) GB/T 4236-2016 Steel examination by sulphur print (Baumann method) GB/T 4236-2025 Steel-examination by sulphur print GB/T 4341-2001 Metallic materials—Shore hardness test GB/T 4341.1-2014 Metallic materials—Shore hardness test—Part 1:Test method GB/T 4341.2-2016 Metallic materials—Shore hardness test—Part 2:Verification of hardness testers GB/T 4341.3-2016 Metallic materials—Shore hardness test—Part 3:Calibration of reference blocks 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 6402-1991 Steel forgings—Method for ultrasonic examination GB/T 6402-2008 Steel forgings—Method for ultrasonic testing GB/T 6402-2024 Method for ultrasonic testing of steel forgings 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 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 GB/T 13298-1991 Metal—Inspection method of microstructure GB/T 13298-2015 Inspection methods of microstructure for metals GB/T 13299-1991 Steel—Determination of microstructure GB/T 13299-2022 Determination of free cementite,pearlite and Widmanstaten structure in steel GB/T 20066-2006 Steel and iron—Sampling and preparation of samples for the determination of chemical composition GB/T 21471-2008 Machining allowances and tolerances for steel open die forgings on hammer—Shafts JB/T 8468-2014 Forged steel parts magnetic particle inspection JB/T 8468-1996 Magnetic particle inspection method for forged steel parts JB/T 9179.1-2013 Machining allowances and tolerances for steel freeform parts on hydraulic presses - Part 1: General requirements JB/T 9179.1-1999 JB/T 9179.1-1999 Machining allowances and tolerances for free-forming parts of hydraulic presses - General requirements JB/T 9179.2-2013 Hydraulic press mechanical machining allowance and tolerance for steel free forging part 2: Round shaft, square shaft and rectangular cross-section types JB/T 9179.2-1999 The allowance and tolerance for mechanical processing of free forgings on a hydraulic press for round, square, and rectangular cross-section types JB/T 9179.3-2013 Hydraulic press machining allowance and tolerance for steel free forgings Part 3: Step shafts JB/T 9179.3-1999 JB/T 9179.3-1999 - Mechanical machining allowance and tolerance for stepped shafts of free forging on hydraulic press JB/T 9179.4-2013 Hydraulic press mechanical processing allowance and tolerance for steel free forgings Part 4: Discs and punch types JB/T 9179.4-1999 JB/T 9179.5-2013 JB/T 9179.5-2013 Machining allowances and tolerances for steel free-forging parts of hydraulic press - Part 5: Short cylinder type JB/T 9179.5-1999 JB/T 9179.6-2013 Hydraulic press for steel free-forging mechanical processing allowance and tolerance Part 6: Modular category. (Note: This is a placeholder translation and the actual translation may vary depending on the context.) JB/T 9179.6-1999 JB/T 9179.7-2013 JB/T 9179.7-2013 Machining allowances and tolerances for steel free-forming parts of hydraulic presses - Part 7: Tubular type. (English translation only) JB/T 9179.7-1999 JB/T 9179.7-1999 - Mechanical machining allowance and tolerance for cylinder type free forging pieces on hydraulic press JB/T 9179.8-2013 Machining allowance and tolerance for steel free-formed parts on hydraulic press - Part 8: Circles, cylinders and flanges JB/T 9179.8-1999 JB/T 9179.8-1999 Machining allowances and tolerances for free-forging parts of hydraulic presses - Round ring type JB/T 9218-2015 Non-destructive testing (NDT) - Penetrant testing method JB/T 9218-1999 Pore penetrating inspection method JB/T 9218-1999 JB/T 9218-2007 Non-destructive testing, including penetrant testing