Question

difference between hardness toughness stiffness and strength

Answer 1

Hey mate here is your answer,

Hardness : the quality or condition of being hard.

Toughness : The ability of a metal to deform plastically and to absorb energy in the process before fracture is termed toughness.

Stiffness : Stiffness is the rigidity of an object — the extent to which it resists deformation in response to an applied force. 

Strength : the quality or state of being physically strong.

Hope this helps ❤