Comparison of Hardness Scales between the INRIM Primary Hardness Standard Machine and the AFFRI Master Rockwell and Vickers Reference Hardness Standard Machines for SIMT (Shanghai-China)

The work consists in the comparison of Vickers, Brinell and Rockwell Hardness Scales realized by the INRIM Primary Hardness Standard Machine (PHS Machine) and the Affri Master Rock and Affri Master Vick Reference Hardness Standard Machines (RHS Machines) for SIMT, Shanghai, China. The work described in the report was carried out in February and March 2007, by the Istituto Nazionale di Ricerca Metrologica (INRIM) of Italy (formerly Istituto di Metrologia "G. Colonnetti" (IMGC) of the National Research Council (CNR)) at AFFRI Laboratory in Induno Olona (VA), Italy. The comparison of the hardness scales generated by the RHS machines with the national scales maintained by INRIM gives an indication of the whole performances of RHS machines and measuring system.