1 Scope
This standard specifies terms and definitions, order information, grouping and codification, dimensions, profiles, weight and allowable deviation, technical requirements, test methods, inspection rules, packaging, marking and quality certificate for carbon spring steel wire for significant use.
This standard is applicable to carbon spring steel wire (hereinafter referred to as "wire") of which spring for significant use, e.g. bearing dynamic load, valve, is made. The spring formed requires no quenching-tempering treatment but low temperature destressing only.
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 222 Permissible Tolerances for Chemical Composition of Steel Products
GB/T 223.3 Methods for Chemical Analysis of Iron, Steel and Alloy C The Diantipyrylmethane Phosphomolybdate Gravimetric Method for the Determination of Phosphorus Content
GB/T 223.4 Alloyed Steel C Determination of Manganese Content C Potentiometric or Visual Titration Method
GB/T 223.5 Steel and iron C Determination of Acid-soluble Silicon and Total Silicon Content C Reduced Molybdosilicate Spectrophotometric Method
GB/T 223.11 Iron Steel and Alloy C Determination of Chromium Content C Visual Titration or Potentiometric Titration Method
GB/T 223.12 Methods for Chemical Analysis of Iron, Steel and Alloy C The Sodium Carbonate Separation C Diphenyl Carbazide Photometric Method for the Determination of Chromium Content
GB/T 223.19 Methods for Chemical Analysis of Iron, Steel and Alloy C The Neocuproine-chloroform Extraction Photometric Method for the Determination of Copper Content
GB/T 223.23 Iron Steel and Alloy C Determination of Nickel Content C The Dimethylglyoxime Spectrophotometric Method
GB/T 223.53 Methods for Chemical Analysis of Iron, Steel and Alloy C The Flame Atomic Absorption Spectrophotometric Method for the Determination of Copper Content
GB/T 223.54 Methods for Chemical Analysis of Iron, Steel and Alloy C The Flame Atomic Absorption Spectrophotometric Method for the Determination of Nickel Content
GB/T 223.58 Methods for Chemical Analysis of Iron, Steel and Alloy C The Sodium Arsenite-sodium Nitrite Titrimetric Method for the Determination of Manganese Content
GB/T 223.59 Iron Steel and Alloy C Determination of Phosphorus Content C Bismuth Phosphomolybdate Blue Spectrophotometric Method and Antimony Phosphomolybdate Blue Spectrophotometric Method
GB/T 223.60 Methods for Chemical Analysis of Iron, Steel and Alloy C The Perchloric Acid Dehydration Gravimetric Method for the Determination of Silicon Content
GB/T 223.61 Methods for Chemical Analysis of Iron, Steel and Alloy C The Ammonium Phosphomolybdate Volumetric Method for the Determination of Phosphorus Content
GB/T 223.62 Methods for Chemical Analysis of Iron, Steel and Alloy C The Butyl Acetate Extraction Photometric Method for the Determination of Phosphorus Content
GB/T 223.63 Methods for Chemical Analysis of Iron, Steel and Alloy C The Sodium (Potassium) Periodate Photometric Method for the Determination of Manganese Content
GB/T 223.64 Iron Steel and Alloy C Determination of Manganese Content C Flame Atomic Absorption Spectrometric Method
GB/T 223.67 Iron Steel and Alloy C Determination of Sulfur Content C Methylene Blue Spectrophotometric Method
GB/T 223.68 Methods for Chemical Analysis of Iron, Steel and Alloy C 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 C Determination of carbon contents C Gas-volumetric method after combustion in the pipe furnace
GB/T 223.71 Methods for Chemical Analysis of Iron, Steel and Alloy C The Gravimetric Method after Combustion for the Determination of Carbon Content
GB/T 223.72 Iron Steel and Alloy C Determination of Sulfur Content C Gravimetric Method
GB/T 224 Determination of Depth of Decarburization of Steel (GB/T 224-2008, ISO 3887:2003, MOD)
GB/T 228 Metallic Materials C Tensile Testing at Ambient Temperature (GB/T 228-2002, eqv ISO 6892:1998)
GB/T 239 Metallic Materials Wire Torsion Test (GB/T 239-1999, eqv: ISO 7800:1984, ISO 9649:1990)
GB/T 342-1997 Dimension, Shape, Mass and Tolerance for Cold-drawn Round Square and Hexagonal Steel Wires
GB/T 2103-2008 General Provisions for Checking, Packing, Marking and Quality Certification of Steel Wire
GB/T 2976 Metallic Materials C Wire C Wrapping Test (GB/T 2976-2004, ISO 7802:1983, IDT)
