Sometimes, after the steel is quenched from austenitizing temperature, surface hardness varies from region to region. This variation of hardness in quenched steel from point to point is termed as Soft Spots. The Brinell hardness test is commonly used in industry for large parts that do not have surface finished. Rockwell hardness test is used for finished parts which are considered non-destructive in nature and will not affect surface features of steel parts. For Laboratory testing and specific hardness of phases in steel, the Vicker hardness test is used.