Patent ID: 7749613

Claim:
A multi-layered brazing sheet comprising: a core layer comprising of about 0.7-1.2 wt. % Cu, up to about 1.3 wt. % Si, up to about 1.9 wt. % Mn, up to about 0.7 wt. % Mg, up to about 0.2 wt. % Ti, up to about 0.25 wt. % Fe, and a balance of Al and incidental impurities; an interliner positioned on one side of the core layer, the interliner comprised of about 0.5-1.2 wt. % Cu, up to about 1.2 wt. % Si, up to about 0.25 wt. % Fe, up to about 1.9 wt. % Mn, up to about 0.2 wt. % Ti, and a balance of Al and incidental impurities; a braze clad layer positioned on the other side of the interliner layer, and a sacrificial layer positioned on the other side of the core layer opposite the interliner, the sacrificial layer comprised of about 0.7-1.2 wt. % Si, up to about 0.2 wt. % Cu, up to about 0.25 wt. % Fe, about 0.7-1.9 wt. % Mn, up to about 6 wt. % Zn, and a balance of Al and incidental impurities.