ISO 6931-1:2016
Stainless steels for springs — Part 1: Wire
ISO 6931-1:2016 specifies the grades of stainless steels which are generally used in the cold drawn condition in the form of wire of circular cross-section up to 10,00 mm in diameter, for the production of springs and spring parts exposed to corrosive effects and sometimes to slightly increased temperatures (see Annex A).
Certain steel grades covered by ISO 16143‑2 are also used for springs, although to a much lesser extent. In these cases, the mechanical properties (tensile strength, etc.) will be agreed between purchaser and supplier. Similarly, diameters between 10,00 mm and 15,00 mm can be ordered according to the specifications of this part of ISO 6931, in which case the parties will agree upon the required mechanical characteristics.
In addition to the specifications of this part of ISO 6931, the general technical delivery requirements of ISO 404 are applicable.
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Foreword
1 Scope
2 Normative references
3 Information to be supplied by the purchaser
4 Requirements
4.1 Manufacturing process
4.2 Form of delivery
4.3 Surface finish
4.4 Chemical composition
4.5 Mechanical properties
4.6 Technological properties
4.6.1 Coiling test
4.6.2 Wrapping test
4.6.3 Simple bend test
4.7 Supply conditions of wire on coils/reels and spools
4.7.1 General
4.7.2 Coil size
4.7.3 Circular wire cast
4.7.4 Helix cast of wire
4.8 Surface quality
4.9 Inner soundness
4.10 Dimensions and dimensional tolerances
4.10.1 Tolerances on diameter
4.10.2 Out of roundness
4.10.3 Tolerance on the length of straightened and cut lengths
5 Testing and inspection
5.1 Inspection and inspection documents
5.2 Extent of testing for specific testing
5.3 Sampling
5.4 Test methods
5.4.1 Chemical composition
5.4.2 Tensile test
5.4.3 Coiling test
5.4.4 Wrapping test
5.4.5 Simple bend test
5.4.6 Reverse torsion test
5.4.7 Wire cast
5.5 Retests
6 Marking and packaging
Annex A (informative) Additional information
Bibliography
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Related Information
Similar Standards
-
BS 1429:1980
Specification for annealed round steel wire for general engineering springs
-
BS 4637:1970
Specification for carbon steel wire for coiled springs (bedding and seating)
-
BS 4638:1970
Specification for carbon steel wire for zigzag and square-form springs
-
BS EN 10089:2002
Hot rolled steels for quenched and tempered springs. Technical delivery conditions
Foreword
1 Scope
2 Normative references
3 Information to be supplied by the purchaser
4 Requirements
4.1 Manufacturing process
4.2 Form of delivery
4.3 Surface finish
4.4 Chemical composition
4.5 Mechanical properties
4.6 Technological properties
4.6.1 Coiling test
4.6.2 Wrapping test
4.6.3 Simple bend test
4.7 Supply conditions of wire on coils/reels and spools
4.7.1 General
4.7.2 Coil size
4.7.3 Circular wire cast
4.7.4 Helix cast of wire
4.8 Surface quality
4.9 Inner soundness
4.10 Dimensions and dimensional tolerances
4.10.1 Tolerances on diameter
4.10.2 Out of roundness
4.10.3 Tolerance on the length of straightened and cut lengths
5 Testing and inspection
5.1 Inspection and inspection documents
5.2 Extent of testing for specific testing
5.3 Sampling
5.4 Test methods
5.4.1 Chemical composition
5.4.2 Tensile test
5.4.3 Coiling test
5.4.4 Wrapping test
5.4.5 Simple bend test
5.4.6 Reverse torsion test
5.4.7 Wire cast
5.5 Retests
6 Marking and packaging
Annex A (informative) Additional information
Bibliography