DS DS/EN ISO 4545-3
DS DSEN SO 4545-3 2006-JAN-02 Metallc materals - Knoop hardness test - Part 3 Calbraton of reference blocks
Cart
(empty)
This standard specifies the method for the calibration of reference blocks to be used for the indirect verification of Knoop hardness testing machines as specified in EN ISO 4545-2. The method is applicable only for indentations with long diagonals greater than or equal to 0,020 mm.