Author(s)

M. Rosso & A. Bennani

Abstract

The properties, in the as hardened condition or after nitriding treatment, of a new Cr hot working tool steel, having a composition similar to A1SI H10 but with reduced Mo and V contents, have been studied on KCU test bars, taking into account the effects of the metallurgical directions and of the position at the surface or at the core of the steel block, trom which the test specimens have been machined. In the as hardened condition, the steel guarantees good isotropic properties, whilst nitriding induces brittle behaviour in the KCU samples taken from the core of the steel block, caused by small microstructural differences between the surface and the core of the material. The morphology of the surface of the fractur

Keywords