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ISO 4545-3:2017
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ISO 4545-3:2017 Metallic materials - Knoop hardness test - Part 3: Calibration of reference blocks
standard by International Organization for Standardization, 12/01/2017
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Full Description
ISO 4545-3:2017 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.