Patent ID: 7374827

Claim:
A metallurgical product comprising: a non-homogenized core comprising of an Aluminum Association 3xxx series alloy having a (Mn+Fe) to Si ratio greater than about 1.4, the non-homogenized core having Al—Mn—Si—Fe—Ni particles being less than about 0.1 microns in average diameter, wherein the solute (in weight percent) of the non-homogenized core satisfies the following equation: ( Mn + Fe + Ti + Cr + V + Zr + Ni Si ) - ( Cu + Mg + Zn Si ) ≥ 0 ; an aluminum alloy interliner bonded to one side of the non-homogenized core having a composition resistant to localized erosion; and a 4xxx cladding alloy bonded to the aluminum alloy interliner.