Under two different force levels and predetermined circumstances, an indenter of a given size, shape, and material is pressed into the surface of a test specimen. A predetermined extra force is then applied and then removed, returning to the stated preliminary force, after which the initial indentation depth is measured. After measuring the final indentation depth, the Rockwell hardness value is calculated using the two constants N and S, as well as the difference, h, between the final and beginning indentation depths.

A spheroconical diamond indenter that complies with ISO 6508-2:2015 must have a radius of curvature at the tip of 0.2 mm and an included angle of 120°. Only the superficial Rockwell diamond scales, the regular Rockwell diamond scales, or the regular and superficial Rockwell diamond scales may be measured using diamond indenters that have received certification.

Ball indenter, shall be tungsten carbide composite in accordance with ISO 6508-2:2015, with a diameter of 1,587 5 mm or 3,175 mm

NextGen’s RockGen DGEN Series – Digital Rockwell Hardness Tester complies with ISO 6508 standard.

Click here to obtain a personalized quote.