Standard hardness test using a specified load on a ball indenter (HB).
The hardness of a metal or part, as represented by the number obtained from the ratio between the load applied on the spherical area of the impression made by a steel ball forced into the surface of the material tested.
The value of hardness of a metal on an arbitrary scale representing kg/mm², determined by measuring the diameter of the impression made by a ball of given diameter applied under a known load. Values are expressed in Brinell Hardness Numbers, BHN.
Similar to ROCKWELL HARDNESS