The main method idea is indentation of a hard-alloy ball. The most common tip diameters area 2.5, 5 and 10 mm. Measurements are conducted with preset load. Upon that the most commonly used loads are 250, 750, 1000 and 3000 kgf.
Current severe requirements set necessity of automatic application, removal of load and automatic measurement of an indentation to minimize the human factor.
A hardness testing machine model made by Struers ApS company used for hardness measurement of any part types is shown above.
