This standard specifies such requirements on dimensions, shape, weight and permissible deviation, technical requirements, test methods, inspection rules, packaging, marking and quality certificate for the carbon bearing steel hot rolled bars.
This standard is applicable to the hot rolled bars in diameter of 20mm~150mm used for manufacturing the bearing unit of automobile hub. The bars for other purpose may also refer to this standard.
2 Normative References
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies. For undated references, the latest edition (including all the amendments) of the normative document applies.
GB/T 223.5 Steel and Iron - Determination of Acid-soluble Silicon and Total Silicon Content - Reduced Molybdosilicate Spectrophotometric Method
GB/T 223.9 Iron Steel and Alloy - Determination of Aluminium Content - Chrom Azurol S Photometric Method
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 223.18 Methods for Chemical Analysis of Iron, Steel and Alloy-The Sodium Thiosulfate Separation Iodimetric 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 223.47 Methods for Chemical Analysis of Iron, Steel and Alloy-The Carrier Precipitation-Molybdenum Blue Photometric Method for the Determination of Antimony Content
GB/T 223.50 Methods for Chemical Analysis of Iron, Steel and Alloy-The Phenylfuorone - CTMAB Direct Photometric Method for the Determination of Tin Content
GB/T 223.58 Methods for Chemical Analysis of Iron, Steel and Alloy; The Sodium Arsenite-Sodium Nitrite Titrimetric Method for the Determination of Manganese Content
GB/T 223.61 Methods for Chemical Analysis of Iron, Steel and Alloy-The Ammonium Phosphomolybdate Volumetric Method for the Determination of Phosphorus Content
GB/T 223.68 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 Iron Steel and Alloy - Determination of Carbon Contents - Gas-volumetric Method after Combustion in the Pipe Furnace
GB/T 223.77 Methods for Chemical Analysis of Iron, Steel and Alloy-The Flame Atomic Absorption Spectrometric Method for the Determination of Calcium Content
GB/T 223.84 Steel and Iron-Determination of Titanium Content-Diantipyrylmethane Spectrophotometric Method
GB/T 224 Determination of Depth of Decarburization of Steel
GB/T 226 Etch Test for Macrostructure and Defect of Steels
GB/T 702-2008 Hot-rolled Steel Bars C Dimensions, Shape, Weight and Tolerances
GB/T 1814 Inspection Method for Steel Work Fractures
GB/T 1979-2001 Standard Diagrams for Macrostructure and Defect of Structural Steels
GB/T 2101 General Requirement of Acceptance Packaging, Marking and Certification for Section Steel
GB/T 4162 Forged and Rolled Steel Bars - Method for Ultrasonic Testing
GB/T 4336 Standard Test Method for Spark Discharge Atomic Emission Spectrometric Analysis of Carbon and Low-alloy Steel (Routine Method)
GB/T 6394 Metal-methods for Estimating the Average Grain Size
GB/T 10561-2005 Steel - Determination of Content of Nonmetallic Inclusions - Micrographic Method Using Standard Diagrams
GB/T 11260 Round Steel-The Inspection Method for Eddy Current Test
GB/T 11261 Steel and Iron-Determination of Oxygen Content-The Pulse Heating Inert Gas Fusion-Infra-red Absorption Method
GB/T 12604.5 Non-destructive Testing-Terminology-Terms Used in Magnetic Particle Testing
GB/T 12604.6 Non-destructive testing - Terminology - Terms Used in Eddy Current Testing
GB/T 15711 Steel Products-Method for Ecth Test of Tower Sample
GB/T 20066 Steel and Iron-Sampling and Preparation of Samples for the Determination of Chemical Composition
ASTM E 381-01(2006) Standard Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings
ASTM E 588 Standard Practice for Detection of Large Inclusions in Bearing Quality Steel by the Ultrasonic Method
