In a drilling process, the metal is removed by both shearing & extrusion. General purpose drills are made of_________________?

In a drilling process, the metal is removed by both shearing & extrusi

1.	In a drilling process, the metal is removed by both shearing & extrusion. General purpose drills are made of_________________?
A.	Stainless steel
B.	Mild steel
C.	High speed steel
D.	High carbon steel
Answer» D. High carbon steel

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In a drilling process, the metal is removed by both shearing & extrusion. General purpose drills are made of_________________?

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