This standard specifies the symbol and category classification, size, shape and weight, technical requirements, test methods, inspection rules, packaging, signs and quality certificates of pure iron as raw material. This standard applies to electrothermal alloys, precision alloys (including soft magnetic materials, hard magnetic materials, elastic alloys, expansion alloys, etc.), low-carbon stainless steel, ultra-low-carbon stainless steel and powder metallurgy, etc. Steel bars and hot-rolled wire rods.
GB/T 9971-2017 Referenced Document
GB/T 11261 Steel and lron - Determination of oxygen content - The pulse heating inert gas fusion-infra-red absorption method
GB/T 14981 Dimension,shape,mass and tolerance for hot-rolled round wire rod
GB/T 20066 Steel and iron.Sampling and preparation of samples for the determination of chemical composition
GB/T 20123 Steel and iron - Determination of total carbon and sulfur content Infrared absorption method after combustion in an induction furnace (routine method)
GB/T 20124 Steel and iron - Determination of nitrogen content - Thermal conductimetric method after fusion in a current of inert gas (Routine method)
GB/T 20126 Unalloyed Steel - Determination of low carbon content - Part 2: Infrared absorption method after combustion in an induction furnace (With preheating)
GB/T 2101 General requirment of acceptance, packaging, marking and certification for section steel
GB/T 223.12 Methods for chemical analysis of iron,steel and alloy--The sodium carbonate separation-diphenyl carbazide photometric method for the determination of chromium content
GB/T 223.19 Methods for chemical analysis of iron,steel and alloy--The neocuproine-chloroform extraction photometric method for the determination of copper content
GB/T 223.23 Iron,,steel and alloy.Determination of nickel content.The dimethylglyoxime spectrophotometric method
GB/T 223.26 Iron,steel and alloy.Determination of molybdenum content.The thiocyanate spectrophotometric method
GB/T 223.29 Iron,steel and alloy.Determination of lead content.Carrier precipitation-xylenol orange spectrophotometric method
GB/T 223.31 Iron,steel and alloy.Determination of arsenic content.Distillation-molybdenum blue spectrophotometric method
GB/T 223.37 Iron, steel and alloy—Determination of nitrogen content—Indophenol blue spectrophotometric method after distillation separation*， 2020-06-02 Update
GB/T 223.47 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 Methods for chemical analysis of iron,steel and alloy--The semixylenol orange photometric method for the determination of bismuth content
GB/T 223.5 Steel and iron.Determination of acid-soluble silicon and total silicon content.Reduced molybdosilicate spectrophotometric method
GB/T 223.50 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 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 223.53 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 Iron, steel and alloy—Determination of nickel content—Flame atomic absorption spectrometric method*， 2022-07-11 Update
GB/T 223.59 Iron,steel and alloy.Determination of phosphorus content.Bismuth phosphomolybdate blue spectrophotometic method and antimony phosphomolybdate blue spectruophotometric method
GB/T 223.62 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 Iron, steel and alloy—Determination of manganese content—Sodium (potassium) periodate spectrophotometric method*， 2022-07-11 Update
GB/T 223.64 Iron,steel and alloy.Determination of manganese content.Flame atomic absorption spectrometric method
GB/T 223.79 Iron and steel-Determination of multi-element contents-X-ray fluorescence spectrometry (Routine method)
GB/T 223.80 Iron,steel and alloy-Determination of trace bismuth and arsenic contents- Hydride generation-atomic fluorescence spectrometric method
GB/T 223.81 Iron,steel and alloy-Determination of total aluminum and total aluminum and total boron contents-Microwave digestion-inductively coupled plasma mass spectrometric method
GB/T 223.82 Steel and iron.Determination of hydrogen content.Thermal conductivity/infrared method after fusion under inert gas*， 2018-05-14 Update
GB/T 223.84 Steel and iron.Determination of titanium content.Diantipyrylmethane spectrophotometric method
GB/T 223.85 Steel and iron.Determination of sulfur content.Infrared absorption method after combustion in an induction furnace
GB/T 223.86 Steel and iron.Determination of total carbon content.Infrared absorption method after combustion in an induction furnace
GB/T 223.9 Iron,steel and alloy.Determination of aluminium content.Chrome azurol S photometric method
GB/T 4336 Determination of multi-element content in carbon steel and medium and low alloy steel Spark discharge atomic emission spectrometry (conventional method) Amendment No. 1
GB/T 702 Hot-rolled steel bars—Dimensions,shape,weight and tolerances
YB/T 2011 Continuous casting square and rectangular blank