Leeb Hardness Meters

The Leeb rebound hardness test is one of the four most used method for testing metal hardness. This portable method is mainly used for testing sufficiently large workpieces (mainly above 1 kg).

The Leeb rebound hardness test method was developed in 1975 by Leeb and Brandestini at Proceq SA to provide a portable hardness test for metals. It was developed as an alternative to the unwieldy and sometimes intricate traditional hardness measuring equipment. The first Leeb rebound product on the market was named “Equotip”, a phrase which still is used synonymously to “Leeb rebound” due to the wide circulation of the “Equotip” product.

Traditional hardness measurements, e.g. according to Rockwell, Vickers and Brinell, are stationary, i.e. fixed workstations are set up in segregated testing areas or laboratories of plants. Most of the times, these methods are used selectively in destructive tests. Samples are cut off from selected parts and measured in the laboratory. From the individual results, statistical conclusions are drawn for the entire batch. The portability of Leeb testers can sometimes help to achieve higher testing rates without destruction of samples (test is considered as non-destructive), which in turn simplifies processes and saves costs.