Hardening of a piece of steel will improve the mechanical properties of the steel (hardness, wear resistance, toughness, shock and impact resistance).
Steel materials are hardened by heating the steel to a critical point, then based on the steel’s composition it will be quenched in either water, air, or molten salt. Quenching of steel is the rapid cooling of steel from an elevated temperature.
Hardened steel has improved mechanical properties such as higher impact strength, tensile strength, abrasion and wear resistance.
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