BS 4638:1970
Current
The latest, up-to-date edition.
Specification for carbon steel wire for zigzag and square-form springs
Hardcopy , PDF
English
22-10-1970
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Requirements for patented cold drawn plain carbon steel round wire in three grades of tensile strength. Chemical composition, standard sizes and tolerances, methods of testing, mechanical properties and details of packing and identification.
| Committee |
ISE/106
|
| DevelopmentNote |
Supersedes 69/1396 DC (08/2005) Reviewed and confirmed by BSI, January 2011. (12/2010)
|
| DocumentType |
Standard
|
| Pages |
10
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
1.1 This British Standard specifies the requirements for patented cold drawn plain carbon steel round wire, suitable for forming into zigzag and square-form springs used in the production of seat and back units for cars and certain types of domestic upholstery. Wire to this standard is not intended for use in the manufacture of mechanical springs.
The definition of patenting is given in BS 6562-1.
1.2 The standard includes preferred metric sizes of wire for the two types of spring and gives a choice of tensile strength ranges.
| BS 443:1969 | Galvanized coatings on wire |
| BS 6562-1:1985 | Terms used in the iron and steel industry Glossary of heat treatment terms |
| BS 4545:1970 | Methods for mechanical testing of steel wire |
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