UNI EN ISO 4545-3 : 2006
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
METALLIC MATERIALS - KNOOP HARDNESS TEST - PART 3: CALIBRATION OF REFERENCE BLOCKS
12-09-2022
01-01-2006
Foreword
1 Scope
2 Normative references
3 Manufacture of the block
4 Calibration machine
5 Calibration procedure
6 Number of indentations
7 Uniformity of hardness
8 Marking
9 Validity
Annex A (informative) Adjustment of Kohler illumination systems
Annex B (informative) Uncertainty of measurement of
hardness-reference blocks
Bibliography
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