BS EN ISO 4545-3:2017:2018 Edition
$102.76
Metallic materials. Knoop hardness test – Calibration of reference blocks
| Published By | Publication Date | Number of Pages |
| BSI | 2018 | 20 |
This document specifies the method for the calibration of reference blocks to be used for the indirect verification of Knoop hardness testing machines as specified in ISO 4545‑2.
The method is applicable only for indentations with long diagonals ≥0,020 mm.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 4 | European foreword |
| 6 | Foreword |
| 7 | 1 Scope 2 Normative references 3 Terms and definitions 4 Manufacture of the reference block 4.1 General 4.2 Thickness 4.3 Test surface area |
| 8 | 4.4 Magnetism 4.5 Flatness and parallelism 4.6 Surface roughness 4.7 Prevention of the regrind of the test surface 5 Calibration machine 5.1 General 5.2 Direct verification 5.3 Traceability of verification instruments |
| 9 | 5.4 Test force 5.5 Indenter 5.6 Diagonal measurement system 6 Calibration procedure |
| 10 | 7 Number of indentations 8 Uniformity of hardness 8.1 Relative non-uniformity 8.2 Uncertainty of measurement 9 Marking |
| 11 | 10 Calibration certificate 11 Validity |
| 12 | Annex A (informative) Adjustment of Köhler illumination systems |
| 13 | Annex B (informative) Uncertainty of mean hardness value of hardness-reference blocks |
| 18 | Bibliography |
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BS EN ISO 4545-3:2017 – TC:2020 Edition
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