CUTLERY AND/OR SERVING CUTLERY MADE OF FERRITIC STAINLESS STEEL WITH A MARTENSITIC CASE

摘要

The invention relates to cutlery and/or serving cutlery made of a steel m aterial which is formed with a ferritic core with a substantially martensiti c case. The case surface hardness of the cutlery and/or serving cutlery of t he invention, determined according to the Vickers hardness test according to Vickers HV 3, is thereby 30% to 300% greater than the lowest degree of hard ness of the core, likewise measured according to Vickers HV 3. The case also has a higher elastic modulus than the core. The surface treatment occurs pr eferably by means of nitridization and heat treatment.