What is meant by the following properties of metal? (i) Hardness (ii) Toughness (iii) Strength – NABTEB QUESTION

(i) Hardness: The hardness of a metal is a measure of its ability to withstand scratching, wear and abrasion and indentation by harder bodies

(ii) Toughness: This is the amount of energy a material can absorb before it fractures.

(iii) Strength: the strength of a metal is its ability to resist the application of force without rupture i.e. tensile, compressive and shear forces.