ISO 6507-1:2018 金属材料—ビッカース硬さ試験—パート1：試験方法 | ページ 2

Foreword

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This document was prepared by Technical Committee ISO/TC 164, Mechanical testing of metals, Subcommittee SC 3, Hardness testing.

This fourth edition cancels and replaces the third edition (ISO 6507-1:2005), which has been technically revised.

The main changes compared to the previous edition are as follows:

• requirements for testing hardmetals and other cemented carbides have been added;
• all references of indentation diagonals, <0,020 mm, have been removed;
• resolution requirements for the measuring system have been defined;
• the lower test force limit of the Vickers microhardness test has been expanded to 0,009 807 N;
• requirements for the periodic (weekly or daily) verifications of the testing machine are normative, and the maximum permissible bias value has been revised. Requirements for the maximum permissible error in measuring a reference indentation have been revised;
• recommendations for inspection and monitoring of the indenter have been added;
• requirements have been added for the approach velocity of the indenter prior to contact with the sample surface;
• the timing requirements for the test force application and the duration at maximum test force have been revised to indicate target time values;
• Figure 2, which illustrates the requirements for the minimum distance between indentations, has been added, but the requirements have not changed;
• requirements have been added to the test report for reporting the test date and any hardness conversion method used;
• Annex D has been revised;
• Annexes E, F and G have been added concerning Vickers hardness measurement traceability, the CCM — Working group on hardness and adjustment of Köhler illumination systems.

A list of all parts in the ISO 6507 series can be found on the ISO website.

1 Scope

This document specifies the Vickers hardness test method for the three different ranges of test force for metallic materials including hardmetals and other cemented carbides (see Table 1).

The Vickers hardness test is specified in this document for lengths of indentation diagonals between 0,020 mm and 1,400 mm. Using this method to determine Vickers hardness from smaller indentations is outside the scope of this document as results would suffer from large uncertainties due to the limitations of optical measurement and imperfections in tip geometry.

A periodic verification method is specified for routine checking of the testing machine in service by the user.

For specific materials and/or products, particular International Standards exist.

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

No terms and definitions are listed in this document.

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

Bibliography