Steel cannot be hardened unless it is heated

Related MCQs

• The process of reheating the hardened steel to some temperature below the critical range, followed by any rate of cooling is known as
• Steel balls for ball bearings are hardened to
• The essential gradient of any hardened steel is
• The process of reheating hardened steel to temperature below the lower critical temperature followed by any desired rate of cooling, is known as
• When piece of 0.2% carbon steel is heated above third critical point the steel is a solid solution of carbon in gamma iron and called
• Which of the following metals has high tendency to get work hardened?
• In normalising steel is heated 40-50 C
• In a 0.2% carbon steel which has been heated above the third critical temperature on cooling at the first critical point the austenite remaining in solution is transformed to new structure called
• The process in which steel is heated 20? to 40?C below the lower critical temperature, held there for a prolonged period and then allowed to cool slowly in the furnace is known as
• A composite bar of steel and copper is heated. The copper bar will be under