Abstract: Brazing sheet having a core layer made of a first aluminium alloy, attached to one side of said core layer a sacrificial cladding made of a second aluminium alloy, and attached to the other side of said core layer a braze cladding made of a third aluminium alloy. The first aluminium alloy consists of: Si ?0.6 wt %; Fe ?0.7 wt %; Cu 0.4-0.9 wt %; Mn 1.0-1.6 wt %; Mg ?0.2 wt %; Cr 0.05-0.15 wt %; Zr 0.05-0.15 wt %; Ti 0.05-0.15 wt %; other elements ?0.05 wt % each and ?0.2 wt % total; Al balance up to 100 wt %; the second aluminium alloy consists of: Si 0.65-1.0 wt %; Fe ?0.4 wt %; Cu ?0.05 wt %; Mn 1.4-1.8 wt %; Zn 1.5-4.0 wt %; Zr 0.05-0.20 wt %; other elements ?0.05 wt % each and ?0.2 wt % total; Al balance up to 100 wt %. The third aluminium alloy has a melting point lower than said first and second aluminium alloys.

Abstract: Brazing sheet having a core layer made of a first aluminium alloy, attached to one side of said core layer a sacrificial cladding made of a second aluminium alloy, and attached to the other side of said core layer a braze cladding made of a third aluminium alloy. The first aluminium alloy consists of: Si ?0.6 wt %; Fe ?0.7 wt %; Cu 0.4-0.9 wt %; Mn 1.0-1.6 wt %; Mg ?0.2 wt %; Cr 0.05-0.15 wt %; Zr 0.05-0.15 wt %; Ti 0.05-0.15 wt %; other elements ?0.05 wt % each and ?0.2 wt % total; Al balance up to 100 wt %; the second aluminium alloy consists of: Si 0.65-1.0 wt %; Fe ?0.4 wt %; Cu ?0.05 wt %; Mn 1.4-1.8 wt %; Zn 1.5-4.0 wt %; Zr 0.05-0.20 wt %; other elements ?0.05 wt % each and ?0.2 wt % total; Al balance up to 100 wt %. The third aluminium alloy has a melting point lower than said first and second aluminium alloys.

Abstract: Brazing sheet having a core layer made of a first aluminium alloy, attached to one side of said core layer a sacrificial cladding made of a second aluminium alloy, and attached to the other side of said core layer a braze cladding made of a third aluminium alloy. The first aluminium alloy consists of: Si 0.2-1.0 wt %; Fe 0.15-0.9 wt %; Cu 0.2-0.9 wt %; Mn 1.0-1.6 wt %; Mg ?0.3 wt %; Cr 0.05-0.15 wt %; Zr 0.05-0.25 wt %; Ti 0.05-0.25 wt %; other elements ?0.05 wt % each and ?0.2 wt % total; Al balance up to 100 wt %; the second aluminium alloy consists of: Si 0.45-1.0 wt %; Fe ?0.4 wt %; Cu ?0.05 wt %; Mn 1.2-1.8 wt %; Ti ?0.10 wt %, Zn 1.3-5.5 wt %; Zr 0.05-0.20 wt %; other elements ?0.05 wt % each and ?0.2 wt % total; Al balance up to 100 wt %. Third aluminium alloy has a melting point lower than said first and second aluminium alloys.