Materials like lead (Pb) and tin (Sn) can be hot worked at room temper – McqOptions

MCQOPTIONS

1.	Materials like lead (Pb) and tin (Sn) can be hot worked at room temperature.
A.	True
B.	False
Answer» B. False

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The cold working of material facilitates its cutting operation due to a decrease in its ductility.
The hot working process is mainly used for achieving the high dimensional accuracy of the metal.
In the hot working of steel material, steel metal may lose its strength due to carbon loss.
The surface finish obtained by cold working is better than that achieved by the hot working of material.
In cold working, larger deformation can be obtained more rapidly than that obtained by the hot working.
In hot working of material, the continuous reformation of grains can be possible in material.
Hot working does not affect the properties like tensile strength, hardness etc. when the process is performed properly.
In the hot working of materials, porosity may increase in the material rather than decrease.
Hot working of brittle materials is not possible as they do not show yielding behaviour.
Materials like lead (Pb) and tin (Sn) can be hot worked at room temperature.