When performing UCI testing on harder and thinner materials of around 3mm because knives typically have a very high hardness, a 2mm or 3mm (1/8″) thickness can be accurately tested directly. For example, gears and knives are typically hardened materials with hardness values in the carbide ranges. Provided the specimens are over 2mm thick, the operator is not required to stack the materials in order to gain accurate reading results.

Please refer to the below picture example of an abrasive cutting wheel with a 2 mm thickness tested on our UH200 model.