steel material that is produced through powder metallurgy, method of producing a component from such steel material and component produced from steel material

摘要

The present invention relates to a steel material that offers a combination of properties that is optimized for the production of components that are subjected to high mechanical, corrosive, thermal and abrasive stresses during practical use. For this purpose, the steel material according to the invention is produced by powder metallurgy and is composed as follows (by weight%): c: 3.0 to 5.0%, si: 0.3 to 2 , 0%, mn: 0.3 to 2.0%, p: 0 to 0.035%, s: 0 to 0.35%, n: 0 to 0.12%, cr: 11.0 to 15 , 0%, mo: 0.5 to 2.0%, v: 13.5 to 16.5%, optionally one element or a plurality of elements of the group "nb, nico, w", where the content of the elements "ni, co, w" is at most 1.0% respectively and the nb content at most 2.0% and the residue consists of iron and unavoidable impurities where hard material particles may be present. up to 30% by weight in the steel matrix composed in this way. A solid semifinished product is formed by a sintering process or an additive process from a alloy steel powder thereby heat-treated and is then finished to form the respective component.