| 摘要 |
PROBLEM TO BE SOLVED: To provide an aluminum brazing sheet and its manufacturing method in which the strength after brazing is high, further a brazing property is excel lent and formability is improved. SOLUTION: The core material 1 of an aluminum brazing sheet is composed of, by weight, <0.3% Mg, <=0.2% Fe, >0.2% to <=1.0% Cu, 0.3-1.3% Si, 0.3-1.5% Mn and the balance Al with inevitable impurities. A brazing filler metal 3 is formed on one surface of the core material and composed of an Al-Si base aluminum alloy. Also, a shell material 2 is formed on the other surface and composed of, by weight, <0.2% Si, 2.0-3.5% Mg, >=0.5% to <2.0% Zn and the balance Al with inevitable impurities.
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