1 Scope
This standard specifies the classification, dimension, shape, technical requirements, test methods, inspection rules, packing, marking, quality certification of the carbon spring steel wire for significant use.
This standard is applicable to manufacturing such springs with high stress or the valve springs for significant use that will not pass through heat treatment or only through low temperature tempering.
2 Normative references
The following standards contain provisions which, through reference in this standard, constitute provisions of this standard. At time of publication, the editions indicated are valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below.
GB 222-84 Method of sampling steel for determination of chemical composition and permissible variations for product analysis
GB 223.3-88 Methods for chemical analysis of iron, steel and alloy—The diantipyrylmethane phosphomolybdate gravimetric method for the determination of phosphorus content
GB 223.4-88 Methods for chemical analysis of iron, steel and alloy—The volumetric method for determination of manganese content by ammonium nitrate oxidation
GB 223.5-88 Methods for chemical analysis of iron, steel and alloy—The oxalate-ferrous sulfate molybdosilicate spectrophotometric method for the determination of silicon content
GB 223.11-91 Methods for chemical analysis of iron, steel and alloy—The ammonium persulfate oxidation volumetric method for the determination of chromium content
GB 223.12-91 Methods for chemical analysis of iron, steel and alloy—The sodium carbonate separation-diphenyl carbazide photometric method for the determination of chromium content
GB 223.19-89 Methods for chemical analysis of iron, steel and alloy—The neocuproine-chloroform extraction photometric method for the determination of copper content
GB 223.23-82 Methods for chemical analysis of iron, steel and alloy—The dimethylglyoxime spectrophotometric method for the determination of nickel content
GB 223.53-87 Methods for chemical analysis of iron, steel and alloy—The flame atomic absorption spectrophotometric method for the determination of copper content
GB 223.54-87 Methods for chemical analysis of iron, steel and alloy—The flame atomic absorption spectrophotometric method for the determination of nickel content
GB 223.58-87 Methods for chemical analysis of iron, steel and alloy—The sodium arsenite-sodium nitrite titrimetric method for the determination of manganese content
GB 223.59-87 Methods for chemical analysis of iron, steel and alloy—The reduced molybdoantimonyl phosphoric acid photometric method for the determination of phosphorus content
GB 223.60-87 Methods for chemical analysis of iron, steel and alloy—The perchloric acid dehydration gravimetric method for the determination of silicon content
GB 223.61-88 Methods for chemical analysis of iron, steel and alloy—The ammonium phosphomolybdate volumetric method for the determination of phosphorus content
GB 223.62-88 Methods for chemical analysis of iron, steel and alloy—The butyl acetate extraction photometric method for the determination of phosphorus content
GB 223.63-88 Methods for chemical analysis of iron, steel and alloy—The sodium (potassium) periodate photometric method for the determination of manganese content
GB 223.64-88 Methods for chemical analysis of iron, steel and alloy—The flame atomic absorption spectrometric method for the determination of manganese content
GB 223.67-89 Methods for chemical analysis of iron, steel and alloy—The reducing distillation-methylene blue photometric method for the determination of sulfur content
GB 223.68-89 Methods for chemical analysis of iron, steel and alloy—The combustion potassium iodate volumetric method for the determination of sulfur content
GB 223.69-91 Methods for chemical analysis of iron, steel and alloy—The gas-volumetric method after combustion for the determination of carbon content
GB/T 223.71-91 Methods for chemical analysis of iron, steel and alloy—The gravimetric method after combustion for the determination of carbon content
GB/T 223.72-91 Methods for chemical analysis of iron, steel and alloy—The alumina chromatographic separation-barium sulfate gravimetric method for the determination of sulphur content
GB 224-87 Determination of depth of decarburization of steel
GB 228-87 Metallic materials—Tensile testing
GB/T 239-87 Metallic materials wire torsion test
GB 342-82 Dimension, shape, weight and tolerance for cold-drawn round steel wires
GB/T 2103-88 General provisions for checking, packing, marking and quality certification of steel wire
GB 2976-88 Metalic materials—Wire—Wrapping test
3 Classification and code
The steel wires shall be divided into three groups: Group E, Group F and Group G according to their functions.
Foreword i
1 Scope
2 Normative references
3 Classification and code
4 Dimension, shape and weight
5 Technical requirements
6 Test methods
7 Inspection rules
8 Packing, marking and quality certification
