This part of ISO 6507 specifies a method for the calibration of reference blocks to be used for the indirect verification of Vickers hardness testing machines, as specified in ISO 6507-2. The method is applicable only for indentations with diagonals greater than or equal to 0,020 mm.
DS/EN ISO 6507-3:2006 history
2006DS/EN ISO 6507-3:2006 Metallic materials - Vickers hardness test - Part 3: Calibration of reference blocks