Deep hole drilling of small diameter, say 0.2 mm is done

Home » Materials Science and Manufacturing Engineering » Materials Science and Manufacturing Engineering Miscellaneous » Question

Deep hole drilling of small diameter, say 0.2 mm is done with EDM by selecting the tool material as

1. Copper wire
2. Tungsten wire
3. Brass wire
4. Tungsten carbide

Correct Option: B

Tungsten wire has very high melting point so it is more suitable.