Question

The principal application of high-speed steel is (a)- cutting tools (b)- internal combustion engine block (c) rails for high-speed trains (d) turbine blades

Answer 1

(a)- cutting tools

Step-by-step 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