Comparison between conventional Vickers hardness and indentation hardness obtained with different instruments

Abstract An extensive comparison between the conventional Vickers hardness at 500 mN and indentation hardness measured with Vickers indenters at 500 mN is presented for up to 20 different eaterials and for three different instruments. Additionally, the indentation modulus is compared to Young's modulus, which was measured with alternative methods or taken from the literature. It is shown that the agreement betweef the results from depth-sensing indentation and the reference values can be improved by additional corrections, for the calculation of the indentation area. With corrections the mean hardness difference to the Vickers hardness reference as average of all investigated materaals can be reduced to about 10% although disturbing pile-up or sink-in effects can still not be considered. For the modulus, the mean difference was only about 6%.