Corrosion-resistant brazing sheet package

A multi-layer metal sheet, comprising:

• a core layer of aluminum-containing alloy comprising up to 0.25 wt % of Si, up to 0.25 wt % of Fe, from 0.5 to 0.6 wt % of Cu, from 1.4 to 1.6 wt % of Mn, from 0.06 to 0.14 wt % of Mg, up to 0.05 wt % of Cr, up to 0.04 wt % of Zn, from 0.1 to 0.2 wt % of Ti, up to 0.05 wt % of Sr, up to 0.15 wt % impurities, and the balance aluminum, wherein the core layer has a first side and a second side;
• a first cladding layer comprising from 6 to 13 wt % of Si, up to 0.4 wt % of Fe, up to 0.1 wt % of Cu, up to 0.1 wt % of Mn, up to 0.15 wt % of Mg, up to 0.05 wt % of Cr, from 2.5 to 4.0 wt % of Zn, up to 0.05 wt % of Ti, up to 0.02 wt % of Sr, up to 0.15 wt % impurities, and the balance aluminum;
• and
• a second cladding layer comprising from 6 to 13 wt % of Si, up to 0.4 wt % of Fe, up to 0.1 wt % of Cu, up to 0.1 wt % of Mn, up to 0.15 wt % of Mg, up to 0.05 wt % of Cr, from 2.5 to 4.0 wt % of Zn, up to 0.05 wt % of Ti, up to 0.02 wt % of Sr, up to 0.15 wt % impurities, and the balance aluminum,
• wherein the first side of the core layer is adjacent to the first cladding layer to form a first interface and the second side of the core layer is adjacent to a second cladding layer to form a second interface.