What are hardness testers?
Hardness testers are portable, hand-held digital devices used to measure the hardness of materials using intrusive or non-intrusive methods. There are several types of hardness tester available that are used to measure the hardness of specific materials, for example, Shore hardness meters are typically used for plastics, whilst UCI hardness meters utilise Vicker's testing methods to measure the extent of indentation within metals.
How is material hardness measured?
In order to measure the empirical hardness of a given sample, a relevant test is applied to the sample based on it's composition. Shore hardness meters (also known as durometers) use a Shore A or D scale test in order to provide an empirical hardness value for plastics. Meanwhile Leeb hardness testing obtains an empirical hardness value by measuring the indentation or penetration depth on a material before and after using an indenter tool.