Toughness of steel refers to the ability of steel to withstand impact or vibration loads. This measure is called impact toughness value.


The factors affecting the toughness of steel are as follows
(1) Chemical constituents
(2) Smelting, pouring, rolling process and treatment
(3) Hardening of Steel
(4) Complex pressure
(5) Stress concentration
(6) Residual pressure
(7) Temperature
(8) Repeated loading action.