What are the two types (series) of high-speed steel cutting tools?

High speed cutting steel tool are commonly used steel tool for cutting the tool materials. It is basically used in condition when the material looses its hardness and it is a subset of tool steel. It is majorly used in power saw blades.

There are mainly two types of high speed steel cutting tools are:

1) Tungsten type: This type of tool are basically designed for T grades. Tungsten maintains the efficiency and properties in the high temperature. It is denoted by T1.

2) Molybdenum type: This type of tool are designed for M grade and it is widely use in industries. Molybdenum high speed steel are better in certain cases as compared to tungsten type.