公开(公告)号：US10364482B2

公开(公告)日：2019-07-30

申请号：US15060672

申请日：2016-03-04

Applicant: WIELAND-WERKE AG

Inventor： Hans-Achim Kuhn ,  Gerhard Thumm ,  Maher Ababneh ,  Volker Voggeser ,  Jeremy Bell

IPC: C22C9/04 ,  C22F1/08 ,  F16C33/00 ,  B22D11/00 ,  C21D8/02 ,  C21D9/00

Abstract: A copper-zinc alloy having the following composition (in % by weight): from 67.0 to 69.0% of Cu, from 0.4 to 0.6% of Si, from 1.2 to 1.6% of Mn, from 0.03 to 0.06% of P, optionally up to a maximum of 0.5% of Al, optionally up to a maximum of 0.15% of Ni, optionally up to a maximum of 0.1% of Fe, optionally up to a maximum of 0.1% of Pb, optionally up to a maximum of 0.08% of Sn, optionally up to a maximum of 0.1% of S, balance Zn and unavoidable impurities. The alloy has a microstructure which consists of an α-phase matrix in which inclusions of manganese silicides having a globular shape are present in a proportion of at least 2% by volume and not more than 5% by volume.