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Hot working does not affect the properties like tensile strength, hardness etc. when the process is performed properly.

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Hot working does not affect the properties like tensile strength, hardness etc. when the process is performed properly.

(a) True

(b) False

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This key question is from Advantage and Disadvantage of Hot and Cold Forming in chapter Types of Die & Metal Forming Processes of Casting-Forming-Welding II

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Right option is (a) True

Easiest explanation: When the hot working process is properly carried out, then hot work does not affect the mechanical properties like tensile strength, hardness, corrosion resistance, etc. The shear stress is reduced at the higher temperature, so this process does not require much force to obtain the desired deformation, due to this properties remains same.

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