|Scales of Leeb Hardness Tester
Depending on the probe ("impact device") and indenter ("impact body") types that vary by geometry, size, weight, material and spring force, diverse impact devices and hardness units are distinguished, e.g.:
Equotip impact device D with hardness unit HLD
Equotip impact device G with hardness unit HLG
Generally, impact device types are optimized for certain application fields. This is similar to using various indenter geometries and test loads in Rockwell (e.g. HRA, HRB, HRC), Brinell and Vickers. Leeb hardness results in HL are often converted to the traditional hardness scales HRC, HB and HV mainly for convention reasons between supplier and customer.