| 摘要 |
PROBLEM TO BE SOLVED: To provide a brazing sheet made of an aluminum alloy for a heat exchanger having high post-brazing strength in spite of a reduced thickness and excellent corrosion resistance. SOLUTION: The brazing sheet made of the aluminum alloy for the heat exchanger includes a core material 2, an outside brazing filler metal 3 arranged on one surface side of the core material 2, and an inside brazing filler metal 4 arranged on the other surface side of the core material 2. The core material 2 contains Mn, Si and Mg, and the balance Al and inevitable impurities. The inside brazing filler metal 4 contains Si and Cu within a prescribed range and the balance Al and inevitable impurities. The Zn content of the outside brazing filler metal 3 and the Cu content of the inside brazing filler metal 4 satisfy the formula Zn≤(7-3Cu). COPYRIGHT: (C)2007,JPO&INPIT
|
