There are many various testing technologies, however, the one that is frequently used and proved itself very effective is Rockwell testing. This technique requires special machinery and is done in two steps. Firstly, a probing amount of force is exercised on the test subject. Primary information is collected after applying a small amount of pressure and is considered the starting point of hardness gradation. Right after this, the preset amount of pressure required for evaluation is applied. The exercised force is set by testing requirements for an object or material. Then the main force is taken off the object, but the starting amount of pressure remains on the test subject. The hardness parameter can be quantified using the depth of deformation of an object. There are also other methods of such evaluations, but they are all based around quantifying the degree of deformation of an object and force applied to deform it, and then require additional calculations to establish the required parameter.
Mega Depot offers a great variety of hardness testing machinery as well as all necessary supplementary instruments. Fowler, General Tools, REED Instruments, etc. provide the best testing equipment at the best prices.