Which of the following is/are not a cutting tool material (mark all that apply) ? a. High-speed steel b. Brass c. Coated carbide d. Diamond

The correct option is : b. Brass

Explanation:

The cutting tool materials are materials that are used to make cutting tools. The cutting tools serve a very important roles in the machinery such as milling cutters. The materials used for making the cutting tools must be tougher and harder than the material that is being cut, at all temperatures.

Some of the cutting tool materials are tool steels (carbon tool steel and high speed steel), cemented carbides and super hard materials such as diamond.

Therefore, brass is not used for making cutting tool.