Patent ID: 6568584
Filing Date: 2003-05-27
Classification: B23K,B32B,Y10T

Abstract:
A brazing sheet product comprising:a core sheet (1) made of an aluminum alloy; an aluminum alloy clad layer (2) cladding on at least one of the surfaces of said core sheet; and a layer (3) comprising nickel on the outersurface of one or both said clad layer or layers (2); wherein the brazing sheet product is devoid of a layer comprising zinc or tin as a bonding layer between said outersurface of said aluminum alloy clad layer or layers (2) and said layer comprising nickel (3), and the aluminum clad alloy layer comprises, in weight percent: Si2 to 18Mgup to 8.0Znup to 5.0Cuup to 5.0Mnup to 0.30Inup to 0.30Feup to 0.80Srup to  0.20â€ƒat least one element selected from the group consisting of: Bi0.01 to  1.0Pb0.01 to 1.0Li0.01  to  1.0, andSb0.01 to 1.0; andâ€ƒimpurities each up to 0.05, total up to 0.20 balance aluminum, wherein said layer (3) comprising nickel has a thickness of not more than 2.0 &mgr;m.