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BS ISO 4954:2021

$215.11

Steels for cold heading and cold extruding

Published By Publication Date Number of Pages
BSI 2021 76
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This document specifies requirements for non-alloy and alloy steels that are intended for cold heading or cold extruding and are delivered as wire rods, wire or bars. It also contains specific requirements for:

  • steels not intended for heat treatment, with diameters from 2 mm to 100 mm (see Annex A);

  • case-hardening steels with diameters from 2 mm to 100 mm (see Annex B);

  • steels for quenching and tempering, including boron alloyed steels (see Table C.3), with diameters from 2 mm to 100 mm (see Annex C);

  • stainless steels with diameters of 0,8 mm up to 50 mm for austenitic steels, up to 25 mm for ferritic steels and up to 100 mm for martensitic steels (see Annex D).

This document (except Annex A) is applicable to the properties of cold-headed or cold-extruded parts which have been subjected to a subsequent heat treatment. As the properties of the parts in the cold-headed or cold-extruded, and subsequently not-heat-treated condition, are largely dependent on the applied cold-heading or cold-extruding conditions, these are, if necessary, subject to agreement between the purchaser and the manufacturer of the parts.

PDF Catalog

PDF Pages PDF Title
2 undefined
7 Foreword
9 1 Scope
2 Normative references
10 3 Terms and definitions
11 4 Classification and designation
4.1 Classification
4.2 Designation
5 Information to be supplied by the purchaser
5.1 Mandatory information
12 5.2 Options and/or supplementary or special requirements
13 5.3 Ordering example
6 Manufacturing process
6.1 General
6.2 Deoxidation
6.3 Heat-treatment condition and surface condition at delivery
6.3.1 Heat-treatment condition
6.3.2 Particular surface conditions
14 6.4 Traceability of the cast
6.5 Statistical evaluation
7 Requirements
7.1 Chemical composition, mechanical properties and hardenability
7.1.1 General
7.1.2 Chemical composition
16 7.1.3 Mechanical properties
7.1.4 Hardenability (only applicable to steel grades of Annexes B and C)
17 7.2 Grain size
7.3 Carbide spheroidization (only applicable for steels of Annexes A, B and C)
7.4 Non-metallic inclusions
7.4.1 Microscopic inclusions (only applicable for steels of Annexes B and C)
7.4.2 Macroscopic inclusions
7.5 Internal soundness
7.6 Aptitude to cold forming
18 7.7 Surface quality
7.7.1 General
7.7.2 Wire rod (only applicable for steels of Annexes A, B and C)
7.7.3 Bars (only applicable for steels of Annexes A, B and C)
7.7.4 Wire rod and bars for stainless steels (only applicable for steels of Annex D)
7.7.5 Bright products
7.7.6 Removal of surface defects
7.7.7 Non-destructive testing of the surface
7.8 Decarburization (only applicable for steels of Annexes B and C)
19 7.9 Corrosion resistance of stainless steels
7.10 Shape, dimensions and tolerances
8 Inspection
8.1 Testing procedures and types of documents
20 8.2 Summary of specific inspection and frequency of testing
21 9 Preparation of samples and test pieces
9.1 Selection and preparation of samples for product analysis
9.2 Selection and preparation of samples and test pieces for the mechanical test
22 10 Test methods
10.1 Chemical analysis
10.2 Mechanical tests
10.3 Hardenability and core hardness tests
10.3.1 Verification of hardenability
10.3.2 Verification of core hardness
10.4 Aptitude to cold forming
10.4.1 Upsetting test for non-alloy and alloy steels of Annexes A, B and C
23 10.4.2 Upsetting test for stainless steels of Annex D
10.5 Non-destructive testing
10.6 Visual and dimensional test
10.7 Retests
11 Surface treatment, marking and packaging
11.1 Surface treatment and temporary corrosion protection
11.2 Marking
24 11.3 Packaging
25 Annex A (normative) Specific requirements for cold heading and cold extruding steels not intended for heat treatment after cold working
29 Annex B (normative) Specific requirements for cold heading and cold extruding case-hardening steels
41 Annex C (normative) Specific requirements for cold heading and cold extruding steels for quenching and tempering
59 Annex D (normative) Specific requirements for cold heading and cold extruding stainless steels
67 Annex E (normative) Supplementary or special requirements
71 Annex F (informative) Designation of steels given in Annexes A, B, C and D and the comparable grades covered in various designation systems
75 Bibliography
BS ISO 4954:2021
$215.11