It is the resistance offered by the metals to the indentation, which is mainly a measure of plasticity and density. This can be divided into three major varieties i.e. Rockwell, Brinnel, and Vickers hardness scales, which are commonly used by industries.
It is the resistance offered by the metal to strike and rebound, which is mainly a measure of elastic properties
It is the resistance offered by the metal to scratching, which is principally a measure of strength and plastic properties.
It is the resistance of metals to various cutting operations
It is resistance of metals to wear subjected to sliding or rotating motion
It is the ability of the material to exhibit large plastic deformation prior to fracture under tensile loading conditions. It is also defined as the ability of a material to be drawn into five wire. Ductility is expressed by percent elongation.