79) The cutting tools are made from
high speed steel
Related Engineering Materials MCQ with Answers
High speed steel, Carbide, Diamond
are free from oxygen
When steel has been fully deoxidized before casting and no gas was evolved during solidification, the resultant steel is known as killed steel. It is combined with an agent like casting before use. This steel is called "killed" because it quietly solidifies in the mold and no gas evolves.
medium carbon steel
Connecting rod is, usually, made from Medium carbon steel