NF EN ISO 6507-1, A03-154-1 (10/2023)

This document specifies the Vickers hardness test method for three different test force ranges, for metallic materials including hard metals and other cementitious carbides (see Table 1), metallic coatings and other inorganic coatings. The Vickers hardness test is specified herein for indentation diagonal lengths between 0.020 mm and 1.400 mm. The use of this method to determine Vickers hardness from smaller indentations is outside the scope of this document, as the results would be affected by large uncertainties due to the limitations of optical measurement and imperfections in the geometry of the tip. The Vickers hardness specified in this document also applies to metallic and other inorganic coatings, including electroplated coatings, electroless coatings, spray coatings, and anodic coatings on aluminum. This document applies to measurements carried out perpendicular to the coated surface and to measurements carried out on cross sections, provided that the characteristics of the coating (flatness, thickness, etc.) allow an accurate reading of the diagonal of the indentation. This document does not apply to coatings with a thickness less than 0.030 mm when the test is carried out perpendicular to the surface of the coating. This standard is not applicable to coatings with a thickness less than 0.100 mm when testing a cross section of the coating. ISO 14577-1 can be used for hardness determination from smaller indentations. A periodic verification method is specified for routine verification of the in-service testing machine by the user. For specific materials and/or products, specific International Standards exist.
(Automatic translation from French)