Patent ID: 9255575
Filing Date: 2016-02-09
CPC Classification: B22F,C22C,F04C,F16C,Y10T

Claim Text:
1. An assembly comprising a first metal component and a second metal component which are subject to sliding stress, the first metal component comprising a first metal component outer surface and a first metal component inner surface and the second metal component comprising a second metal component outer surface and a second metal component inner core, the first metal component inner surface and the second metal component outer surface each forming a respective sliding surface in operation sliding against one another, where at least one of the first metal component and the second metal component completely is made from a metal sintered material having an iron-based matrix, which in addition to iron contains carbon and up to 10 wt. % of at least one non-ferrous metal, the proportion of carbon content being at least 1 wt. %, wherein the carbon content is a maximum of 10 wt. % and at least a portion of the carbon is present in unbound particulate form in the iron-based matrix and wherein the iron-based matrix has a structure composed of pearlite and ferrite, wherein a proportion of pearlite in the iron-based matrix increases through at least one of a direction from the first metal component outer surface to the first metal component inner surface and a direction from the second metal component inner core to the second metal component outer surface.