| 摘要 |
PROBLEM TO BE SOLVED: To provide an aluminum alloy clad material by which manufacturing can be simplified and also manufacturing costs can be reduced and which has excellent strength and brazability and can be suitably used for a reinforcing material etc. for heat exchangers. SOLUTION: The clad material is composed of two layers constituted in such a way that one side of a core material having a composition consisting of >1.2 to 1.8% Mn, >0.8 to 1.4% Si, 0.4 to 1.0% Cu, 0.05 to <0.2% Mg and the balance Al with inevitable impurities is clad with a brazing filler metal having a composition consisting of 6 to 12% Si and the balance Al with inevitable impurities or a brazing filler metal having a composition consisting of 6 to 12% Si, 0.2 to 5.0% Zn and the balance Al with inevitable impurities. Moreover, overall sheet thickness is 1.0 to 3.5 mm, and the cladding ratio of the brazing filler metal is 5 to 15%. By this method, high strength can be obtained without deteriorating brazability. COPYRIGHT: (C)2007,JPO&INPIT
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