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ISO 4545-3:2005

Metallic materials - Knoop hardness test - Part 3: Calibration of reference blocks

ISO 4545-3:2005 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 greater than or equal to 0,020 mm.

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