What Factors Influence The Level Of Hardness?

What Factors Influence The Level Of Hardness? What factors influence the level of hardness? Hardness is dependent on ductility, elastic stiffness, plasticity, strain, strength, toughness, viscoelasticity, and viscosity. Which factors affect the selecting of the appropriate hardness test? The selection of the hardness test method and acquired results are dependent on hardness of the item