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BS EN ISO 683-5:2021

BS EN ISO 683-5:2021

$167.15

Heat treatable steels, alloy steels and free-cutting steels – Nitriding steels

Published By Publication Date Number of Pages
BSI 2021 36
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This document gives the technical delivery requirements for

  • semi-finished products, e.g. blooms, billets, slabs (see note 1),

  • bars (see note 1),

  • wire rod,

  • hot-rolled plates (see note 2), and

  • hammer or drop forgings (see note 1)

manufactured from the nitriding steels listed in Table 3 and supplied in one of the heat-treatment conditions given for the different types of products in Table 1, rows 2 to 5, and in one of the surface conditions given in Table 2.

The steels are generally intended for the fabrication of quenched and tempered and, subsequently, nitriding machine parts.

The requirements for mechanical properties given in this document are restricted to the sizes given in Table 6.

NOTE 1 Hammer-forged semi-finished products (blooms, billets, slabs, etc.), seamless rolled rings and hammer-forged bars are in the following covered under semi-finished products or bars and not under the term “hammer and drop forgings”.

NOTE 2 The term “plate” includes in the following also wide flats unless otherwise stated.

In special cases, variations in these technical delivery requirements or additions to these requirements can form the subject of an agreement at the time of enquiry and order (see 5.2 and Annex B).

In addition to this document, the general technical delivery requirements of ISO 404 are applicable.

PDF Catalog

PDF Pages PDF Title
2 National foreword
4 European foreword
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
5.2 Options/supplementary or special requirements
12 5.3 Ordering example
6 Manufacturing process
6.1 General
6.2 Deoxidization
6.3 Heat treatment and surface condition at delivery
6.3.1 Normal condition at delivery
6.3.2 Particular heat-treatment condition
6.3.3 Particular surface conditions
6.4 Traceability of the cast
13 7 Requirements
7.1 Chemical composition, hardness and mechanical properties
7.1.1 General
7.1.2 Chemical composition
7.1.3 Mechanical properties
7.2 Machinability
7.3 Cold shearability
7.4 Grain size
7.5 Non-metallic inclusions
7.5.1 Microscopic inclusions
7.5.2 Macroscopic inclusions
14 7.6 Internal soundness
7.7 Surface quality
7.8 Decarburization
7.9 Shape, dimensions and tolerances
8 Inspection
8.1 Testing procedures and types of documents
15 8.2 Frequency of testing
8.3 Specific inspection and testing
8.3.1 Verification of the hardness and mechanical properties
8.3.2 Visual and dimensional inspection
9 Test methods
9.1 Chemical analysis
9.2 Hardness and mechanical tests
9.2.1 Hardness
9.2.2 Mechanical tests
16 9.2.3 Impact test
9.3 Retests
10 Marking
26 Annex A (normative) Ruling sections for mechanical properties
30 Annex B (normative) Supplementary or special requirements
32 Annex C (informative) Designation of steels given in this document and of comparable grades covered in various designation systems
33 Annex D (informative) Dimensional standards applicable to products complying with this document
34 Bibliography

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BS EN ISO 683-5:2021
$167.15