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Which of the following materials is used for the manufacturing of dies and punches in the sheet metal forming?

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in Casting-Forming-Welding II by (119k points)
Which of the following materials is used for the manufacturing of dies and punches in the sheet metal forming?

(a) Grey cast iron

(b) Copper

(c) Aluminium

(d) Carbide

This question was addressed to me in exam.

Origin of the question is Types of Sheet Metal Die topic in portion Types of Die & Metal Forming Processes of Casting-Forming-Welding II

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Best answer
Correct choice is (d) Carbide

Easiest explanation: Carbide is mainly used for the manufacturing of dies and punches in the sheet metal forming operations. Sometimes tool steel is also preferred to maintain the lateral rigidity in the tools. Dies and punches must possess mechanical properties such as hardness, strength, rigidity, toughness, machinability etc.

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