They are steels with an extremely high workability on tool-machines also called “free-cutting steels.”
They are designed to be machined on automatic machines for the production of a large quantity of pieces where in the first place an excellent workability or machinability is required enabling the reduction of production costs.
They can be divided into two main groups:

  • ¬†steels not destined to heat treatment
  • hardening and tempering steels.