Multi-layered aluminium brazing sheet material

US10279434B2 · kind B2 · utility

Assignee

• Aleris Rolled Products Germany GmbH · DE

Inventors

• Steven Kirkham · Ransbach-Baumbach, DE
• Bernd Jacoby · Limburg, DE

Key dates

• Filing date: Sep 9, 2015
• Grant date: May 7, 2019
• Expiry date: May 20, 2036

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/12764
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A multi-layered brazing sheet material including an aluminum core alloy layer, a brazing clad layer material on one face of the core layer, an inter-layer between the core layer and brazing clad layer material, and a water-side layer on the other face of the core layer. The core layer made from aluminum alloy having, in wt. %, up to 0.6% Si, up to 0.45% Fe, 0.6% to 1.25% Cu, 0.6% to 1.4% Mn, 0.08% to 0.4% Mg, up to 0.2% Cr, up to 0.25% Zr, up to 0.2% Ti, up to 0.3% Zn, balance aluminum and impurities. The brazing layer made from aluminum alloy having 6% to 14% Si and up to 2% Mg, balance aluminum and impurities. The inter-layer made from 1xxx-series aluminum alloy. The water-side layer made from 3xxx-series aluminum alloy having 0.5% to 1.8% Mn and 1% to 3.5% Zn.