Multi-layered aluminium brazing sheet material

US10486269B2 · kind B2 · utility

Assignee

• Aleris Rolled Products Germany GmbH · DE

Inventors

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

Key dates

• Filing date: Feb 9, 2016
• Grant date: Nov 26, 2019
• Expiry date: Aug 25, 2036

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/12764
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Brazing sheet material having an aluminium core alloy layer, a first brazing clad layer on one face of the core layer and an inter-layer between the core layer and the first clad layer material. The core layer of aluminium alloy including, 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 0.25% Ti, up to 0.3% Zn, balance aluminium. The first clad layer is made from 4xxx-series aluminium alloy having 6% to 14% Si and up to 2% Mg, balance aluminium. The inter-layer is made from 3xxx-series aluminium alloy including, up to 0.4% Si, up to 0.5% Fe, up to 0.8% Cu, 0.4% to 1.1% Mn, up to 0.04% Mg, up to 0.2% Cr, up to 0.25% Zr, up to 0.25% Ti, up to 0.3% Zn, balance aluminium.