Increasing wear resistance of a wastegate valve

A wastegate valve comprising a functional assembly of a body member and an actuable member,

• wherein the body member has a sealing portion that is configured to rest on a seat for the wastegate valve in a closing position of the wastegate valve,
• wherein the actuable member is configured to provide an engagement area of the functional assembly and to thereby enable setting of the position of the wastegate valve through manipulation of the actuable member,
• wherein at least one of a surface of the body member and a surface of the actuable member facing each other in an axial direction of the wastegate valve,
• wherein the at least one of the surface of the body member and the surface of the actuable member is provided at least one elevated portion formed adjacent to at least one recessed portion in a tangential direction of the wastegate valve,
• wherein the body member comprises a horn-shaped element configured to extend through the seat for the wastegate valve in the closing position of the wastegate valve, and wherein the sealing portion of the body member is arranged as a rim on the horn-shaped element,
• wherein the horn-shaped element is at least partially hollow, and wherein the actuable member is at least partially accommodated in the horn-shaped element,
• wherein the horn-shaped element is cup-shaped and has a central protrusion extending from a bottom surface of horn-shaped element in the axial direction,
• wherein the actuable member has a central hole through which the central projection is inserted,
• wherein the surface of the body member is formed as the bottom surface of the horn-shaped element, and
• wherein the surface of the actuable member is located within the horn-shaped element and is formed as a top surface of the actuable member in which the central hole is formed.