Leeb rebound hardness test

The Leeb rebound hardness test is one of the four most used methods for testing metal hardness.

Two scales that measures rebound hardness are the Leeb rebound hardness test and Bennett hardness scale.

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.

As an improvement on this rough method, the Leeb Rebound Hardness Test, invented in the 1970s, uses the ratio of impact and rebound velocities (as measured by a magnetic inducer) to determine hardness.