Patent ID: 6413331
Filing Date: 2002-07-02
Classification: C22C,C22F

Abstract:
A method for manufacturing a brazed assembly using brazing sheet, comprising the subsequent steps of:(i) forming parts of which at least one is made from the brazing sheet; (ii) assembling the parts into the assembly; (iii) brazing the assembly; (iv) cooling the brazed assembly to below 100Â° C. with a cooling rate of at least 40Â° C./min; (v) ageing the brazed and cooled assembly to achieve an 0.2% yield strength of at least 85 MPa and a corrosion life of 13 days or more in a SWAAT-test without perforations in accordance with ASTM G-85, and wherein the brazing sheet has a core made of an aluminum alloy having the composition (in weight %):Si<0.15Mn0.7-1.5Mgup to 0.8Cu0.5-1.5Zn<2.0Fe<0.4Cr<0.30Ti<0.30Zr<0.30V<0.30otherseach < 0.05total < 0.15balancealuminium.