Hardness

Name:
Hardness
Detailed information:
The resistance of a material to deformation of an indenter of specific size and shape under a known load. This definition applies to all types of hardness scales except the Mohs scale, which is based on the concept of scratch hardness and is used chiefly for minerals. The most generally used hardness scales are Brinell (for cast iron), Rockwell (for sheet metal and heat-treated steel), diamond pyramid, Knoop, and scleroscope (for metals). Durometer hardness is used for materials such as rubber and plastics.