Patent ID: 7811394
Filing Date: 2010-10-12
Classification: B22D,C22C,C22F

Abstract:
1. Aluminum alloy strips with thickness <0.3 mm, to be used in the manufacture of brazed heat exchangers, with composition consisting essentially of (% by weight): Si<1.5; Fe<2.5; Cu<0.8; Mg<1.0; Mn≦1.8; Zn<2.0; In<0.2; Sn<0.2; Bi<0.2; Ti<0.2; Cr<0.25; Zr<0.25; Si+Fe+Mn+Mg>0.8, other elements <0.05 each and <0.15 in total, with a difference of corrosion potential between surface and mid-thickness, measured with respect to a saturated calomel electrode according to ASTM standard G69 equal to at least 10 mV.