INTERNATIONAL STANDARD ISO 6507-3:2018
Metallic materials — Vickers hardness test —
Part 3:
Calibration of reference blocks
ISO 6507 consists of the following parts, under the general title Metallic materials —— Vickers hardness test:
ISO 6507-1 Metallic materials —— Vickers hardness test Part 1: Test method
ISO 6507-2 Metallic materials —— Vickers hardness test Part 2: Verification and calibration of testing machines and indenters
ISO 6507-3 Metallic materials —— Vickers hardness test Part 3: Calibration of refernce blocks
ISO 6507-4 Metallic materials —— Vickers hardness test Part 4: Table of hardness values
替代情况：替代 ISO 6507-3：2005
Contents
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Manufacture of reference blocks
5 Calibration machine
6 Calibration procedure
7 Number of indentations
8 Uniformity of hardness
9 Marking
10 Calibration certificate
11 Validity
A Uncertainty of the mean hardness value of hardness reference blocks
Annex B (informative) Adjustment of Köhler illumination systems
Bibliography
1 Scope
This document specifies a method for the calibration of reference blocks to be used for the indirect verification of Vickers hardness testing machines, as specified in ISO 6507-2.
The method is applicable only for indentations with diagonals ≥0,020 mm.
2 Normative references
The following docuents 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.
ISO 376, Metallic materials — Calibration of force-proving instruments used for the verification of uniaxial testing machines
ISO 6507-1, Metallic materials — Vickers hardness test — Part 1: Test method
ISO 6507-2, Metallic materials — Vickers hardness test — Part 2: Verification and calibration of testing machines
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:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
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