New design pitting corrosion resistance stainless steel

A new material, usually, is a classic material with small modifications. The modifications provide new and/or superior properties to the material, making it competitive. The development of a new austenitic stainless steel based on the modified AISI 304 is described in the present work. This new steel shows a pitting corrosion resistance similar, or even better, than AISI 316. The behaviour of a stainless duplex steel with a low content in Ni is also described here. Its pitting corrosion resistance is similar than a conventional duplex steel. In both cases the ratio properties/price turns out to be competitive. The work was carried out by Acerinox S.A. inside the general plan of 1 + D, which is developed in collaboration with several public research centers whose principal activities are related to Science and Technology of Materials.