This Standard, which is applicable to both stationary and portable hardness testing equipment, details the procedure for Rockwell regular hardness and Rockwell superficial hardness tests for metallic materials. Tables 1 and 2 display the scales and the range of hardness.

Other requirements must be followed for some products and materials, such as hardmetals (for instance, ISO 3738-1 and ISO 4498).

It should be noted that according to ISO 6508-1, steel ball indenters are only permitted to be used in tests that adhere to Annex A and that the standard type of ball indenters for Rockwell regular hardness and Rockwell superficial hardness is tungsten carbide composite (hereafter referred to as hardmetal indenter balls).

At the time of the subsequent revision, this Standard will adopt hardmetal indenter balls as the standard indenter (see Table 1, Table 2, 5.2, 6.3 and Table E.1). Even in this situation, it is planned to conduct the test in accordance with Annex A using steel balls as the standard indenter.

To sum up, NextGen’s Universal Hardness Tester for Vickers / Knoop, Rockwell and Brinell implement JIS Z2245 Standard.

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