ISO 683-17:2023 調質鋼、合金鋼、快削鋼 - Part 17: 玉軸受鋼およびころ軸受鋼 | ページ 2

Foreword

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The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of ISO document should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives ).

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This document was prepared by Technical Committee ISO/TC 17, Steel, Subcommittee SC 4, Heat treatable and alloy steels, in collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC 459/SC 5, Steels for heat treatment, alloy steels, free-cutting steels and stainless steels, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).

This fourth edition cancels and replaces the third edition (ISO 683-17:2014), which has been technically revised.

The main changes are as follows:

• induction hardening steel 50CrMo4 and stainless steel X30CrMoN15-1 were added;
• requirements for Ca and Ti content have been added for through-hardening bearing steels;
• requirements for O content have been further restricted for through-hardening and induction-hardening bearing steels;
• option for H content for premium bearing steels has been added for through-hardening, case-hardening and induction-hardening bearing steels;
• option for verification of microscopic inclusions in Table A.1 for through-hardening bearing steels has been revised.

A list of all parts in the ISO 683 series can be found on the ISO website.

1 Scope

This document specifies the technical delivery requirements for five groups of wrought ball and roller bearing steels as listed in Table 3, namely

• through-hardening bearing steels (steels with about 1 % C and 1 % to 2 % Cr),
• case-hardening bearing steels,
• induction-hardening bearing steels (unalloyed and alloyed),
• stainless bearing steels, and
• high-temperature bearing steels.

This document is applicable to the products and heat-treatment conditions given in Table 1 and the surface conditions given in Table 2.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 377, ISO 4885, ISO 4948-1, ISO 4948-2, ISO 6929, ISO 9443, ISO 14284 and the following terms and definitions apply.

ISO and IEC maintain terminology databases for use in standardization at the following addresses:

Bibliography