Brief Introduction to Brinell Hardness Tester

Brinell hardness test is mainly used in hardness measurement for cast iron, steel products, nonferrous metals and soft alloys, etc.

Besides it can be also used in hardness measurement for some nonmetal materials, such as rigid plastics, bakelite, etc.

Brinell hardness test is to use a steel ball of a certain diameter to press on the specimen surface with specified test force (see Fig.1). After the specific time of holding test force, unload the test force and measure the average diameter of indentation of specimen surface with reading microscope. Then the Brinell hardness value can be checked out from the control table.