Answer:
(a)- cutting tools
Explanation:
High speed steel is the cutting tool material .It is widely used in the production process.it also represent as HSS.High speed steel is made from heat treatment process of steel .
The high speed steel have following compositions
1.Tungsten - 18 %
2.Chromium - 4%
3. Vanadium- 1 %
4.Carbon - 0.7 %
5.Iron - 76.3 %
So the option a is correct.
(a)- cutting tools
