BS EN ISO 4545-3:2017 – TC:2020 Edition
$134.27
Tracked Changes. Metallic materials. Knoop hardness test – Calibration of reference blocks
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 45 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 27 | National foreword |
| 29 | European foreword |
| 31 | Foreword |
| 32 | 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 |
| 33 | 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 |
| 34 | 5.4 Test force 5.5 Indenter 5.6 Diagonal measurement system 6 Calibration procedure |
| 35 | 7 Number of indentations 8 Uniformity of hardness 8.1 Relative non-uniformity 8.2 Uncertainty of measurement 9 Marking |
| 36 | 10 Calibration certificate 11 Validity |
| 37 | Annex A (informative) Adjustment of Köhler illumination systems |
| 38 | Annex B (informative) Uncertainty of mean hardness value of hardness-reference blocks |
| 43 | Bibliography |
