Aleris Aluminum Koblenz Gmbh

Behr Gmbh Co. Kg

Aleris Aluminum Canada S.e.c.

Mahle Behr Gmbh & Co. Kg

Aleris Rolled Products Germany Gmbh

Novelis Koblenz Gmbh

Sampath Desikan

Klaus Vieregge

Job Anthonius Van Der Hoeven

Adrianus Jacobus Wittebrood

Achim Bürger

Andreas Eilemann

Bernd Grünenwald

Scott Haller

Matthias Türpe

Matthias Traub

Mark Henrik Röger

Matthias Gördeler

Scott William Haller

Matthias TÜRPE

Achim BÜRGER

A multi-layered brazing sheet with improved long life corrosion resistance achieved by balancing the Zn, Cu, Mn, Si and Mg content of the core and interliner alloy. The brazing sheet has a core of a 3xxx alloy, an inner braze cladding of a 4xxx alloy, and between core and inner braze cladding an interliner of a 3xxx alloy. The 3xxx alloy of the core has 0.55-1.0 wt % Cu, 0.7-1.8 wt % Mn, &#x3c;0.3 wt % Mg, &#x3c;0.4 wt % Zn. The 3xxx alloy of the interliner has &#x3c;0.25 wt % Cu, 0.5-1.5 wt % Mn, &#x3c;0.3 wt % Mg, 0.1-5.0 wt % Zn. A 1xxx or 7xxx alloy could be used for the interliner instead of the 3xxx alloy.

Multi-layered brazing sheet

Disclosed is a process for producing an Al&#x2014;Mn alloy sheet with improved liquid film migration resistance when used as core alloy in brazing sheet, including the steps of: casting an ingot having a composition comprising (in weight percent): 0.5&#x3c;Mn&#x2266;1.7, 0.06&#x3c;Cu&#x2266;1.5, Si&#x2266;1.3, Mg&#x2266;0.25, Ti&#x3c;0.2, Zn&#x2266;2.0, Fe&#x2266;0.5, at least one element of the group of elements of 0.05&#x3c;Zr&#x2266;0.25 and 0.05&#x3c;Cr&#x2266;0.25; other elements &#x3c;0.05 each and total &#x3c;0.20, balance Al; homogenisation and preheat; hot rolling; cold rolling (including intermediate anneals whenever required), and wherein the homogenisation temperature is at least 450&#xb0; C. for a duration of at least 1 hour followed by an air cooling at a rate of at least 20&#xb0; C./h and wherein the pre-heat temperature is at least 400&#xb0; C. for at least 0.5 hour.

Process by producing an aluminium alloy brazing sheet, aluminium alloy brazing sheet

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Koblenz, Germany

Sampath Desikan