The Brinell Hardness test that largest indentment among all the hardness tests is able to reflect the comprehensive features of the material,and the test is unaffected by the organization micro-dioptre and the compositional unevenness of the speciment;and hence it is a hardness testing with high precision.The Brinell hardness test is widely used in such industrial fields as metallurgy,forging,casting ,steel and nonferrous metals industries,as well as in the laboratories,universities,colleges and scientific research institutes.