For scales A, B, C, D, E, F, G, H, K, 15N, 30N, 45N, 15T, 30T, and 45T for metallic materials, ISO 6508 outlines the procedure and is applicable to both stationary and portable hardness testing devices.

Other specialized International Standards are applicable for particular materials and/or products (for instance, ISO 3738 1 and ISO 4498).

Principle: An indenter of specified size, shape, and material is forced into the surface of a test specimen under two force levels using the specific conditions defined in Clause 7. The specified preliminary force is applied, and the initial indentation depth is measured, followed by the application and removal of a specified additional force, returning to the preliminary force. The final indentation depths are then measured, and the Rockwell hardness value is derived from the difference, h, in the final and initial indentation depth and the two constants N and S as Rockwell Hardness = N-(h/s)

To answer your question – yes, NextGen’s Universal Hardness Tester for Vickers / Knoop, Rockwell and Brinell comply ISO 6508 Standard.

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