1 Scope
This part specifies the classifications and designations, order contents, dimension, shape, weight and permissible tolerance, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of steel wire for cold heading and cold forging intended for heat treatment.
This part is applicable to the carbon constructional quality steel wires and alloy structure steel wires (hereinafter referred to as steel wire) for making fasteners and cold assemblies such as rivet, bolts, screws and stud bolts. After the fasteners and cold assemblies is finished through cold heading and cold forging, they need to be subjected to heat treatment such as surface carburizing, nitriding and tempering, etc.
2 Normative references
The following normative documents contain provisions which, through reference in this part, constitute provisions of this part. For dated references, subsequent amendments to (excluding corrections to), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest editions apply to this part.
GB/T 222 Permissible tolerances for chemical composition of steel products
GB/T 223.3 Methods for Chemical Analysis of Iron, Steel and Alloy – the Diantipyrylmethane Phosphomolybdate Gravimetric Method for the Determination of Phosphorus Content
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 223.12 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 223.13 Methods for chemical analysis of iron, steel and alloy－The ammonium ferrous sulfate titration method for the determination of vanadium content
GB/T 223.14 Methods for chemical analysis of iron, steel and alloy－The N-benzoy-N-phenylhydroxylamine extraction photometric method for the determination of vanadium content
GB/T 223.16 Methods for chemical analysis of iron, steel and alloy – The chromotropic acid photometric method for the determination of titanium 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 223.53 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 Methods for chemical analysis of iron,steel and alloy; 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 – The sodium arsenite-sodium nitrite titrimetric method for the determination of manganese content
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 223.61 Methods for chemical analysis of iron, steel and alloy; The ammonium phosphomolybdate volumetric method for the determination of phosphorus content
Foreword i
1 Scope
2 Normative references
3 Classification and code
4 Order contents
5 Dimension, appearance, weight and permissible tolerance
6 Technical requirements
7 Test method
8 Inspection rules
9 Packaging, marking and quality certificate
Annex A (Informative) Technical differences between this part and JIS G 3508-2: 2005 and JIS G 3509-2: 2003 and their causes
