Use of a brass alloy for sanitary pipes

US5961749A · kind A · utility

Assignee

• Diehl Stiftung & Co. KG · DE

Inventor

• Peter Ruchel · Achern, DE

Key dates

• Filing date: Apr 22, 1998
• Grant date: Oct 5, 1999
• Expiry date: Apr 22, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C22C9/08
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to the use of a brass alloy with a high degree of cold workability for sanitary pipes, comprising 60.5-63.2% Cu, 2%-3.7% Pb, the balance Zn, plus normal impurities, wherein the effective copper equivalent is 63%-64.5% Cu. The use of cheap scrap in production of the alloy is possible by virtue of admitting lead and impurities. A very good degree of cold workability is afforded by virtue of the copper equivalent which is comparable to that of MS 63. The use of cheap return scrap causes the production costs for the alloy to be significantly below those of MS 63.