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Materials like lead (Pb) and tin (Sn) can be hot worked at room temperature.(a) True(b) FalseI have been asked this question in homework.My doubt is from Advantage and Disadvantage of Hot and Cold Forming in section Types of Die & Metal Forming Processes of Casting-Forming-Welding II

Answer»

Correct choice is (a) True

For explanation I would say: Hot WORKING or hot forming of materials is normally performed at the TEMPERATURE above than its re-crystallization temperature, but for materials LIKE lead (PB) and tin (Sn), the hot working can be DONE at room temperature because these materials possess very low crystallization temperature.



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