This standard specifies classification and code, order contents, dimension, shape, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of carburizing steels for bearing.
This standard is applicable to hot-rolled, forged, cold-drawn and bright round steels of carburizing steels for bearing (hereinafter referred to as steels), which are used for manufacturing bearing ring and rolling element.
Steels of other designations and dimensions may also be supplied, with the specific requirements noted in the contract, provided that it is agreed between the Supplier and the Demander.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) 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 223.11 Iron Steel and Alloy - Determination of Chromium Content - Visual Titration or Potentiometric Titration Method
GB/T 223.19 Methods for Chemical Analysis of Iron Steel and Alloy - 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 223.59 Iron Steel and Alloy - Determination of Phosphorus Content - Bismuth Phosphomolybdate Blue Spectrophotometric Method and Antimony Phosphomolybdate Blue Spectrophotometric Method
GB/T 223.60 Methods for Chemical Analysis of Iron, Steel and Alloy - The Perchloric Acid Dehydration Gravimetric Method for the Determination of Silicon Content
GB/T 223.63 Methods for Chemical Analysis of Iron, Steel and Alloy - The Sodium (Potassium) Periodate Photometric Method for the Determination of Manganese 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 223.82 Steel and Iron - Determination of Hydrogen Content - Inert Gas Impulse Fusion Heat Conductivity Method
GB/T 223.84 Steel and Iron - Determination of Titanium Content - Diantipyrylmethane Spectrophotometric Method
GB/T 224-2008 Determination of Depth of Decarburization of Steels
