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ISO 4545-3
M00000064
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ISO 4545-3 2nd Edition, December 1, 2017 Metallic materials - Knoop hardness test - Part 3: Calibration of reference blocks
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Description / Abstract:
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.