DS DS/EN ISO 6506-3
DS DSEN SO 6506-3 2006-JAN-19 Metallc materals - Brnell hardness test - Part 3 Calbraton of reference blocks
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This part of ISO 6506 specifies a method for the calibration of reference blocks which are intended for use in the indirect verification of Brinell hardness testing machines as described in ISO 6506-2.