Quench and tempering steels

Several of our hardenable steels are specifically designed for toughening. A subsequent tempering is usually required to give the steel the desired ratio between hardness and toughness. This is called toughening and means that a steel is hardened by quenching in water or oil at a temperature around 900 ° C. This is followed by an annealing that anneals the hard Martensite to a more impact-resistant and fine-grained Bainite structure. Toughened steel is characterized by two things:

  • High strength
    Good formability

If the steel then needs to be thermoformed, the steel must be toughened again to regain the mechanical properties. Toughened steel is normally delivered in toughened condition, QT. It is normally possible to process cutting.