The brazing filler metal which consists of the AlSi based aluminum

摘要

PROBLEM TO BE SOLVED: To provide an aluminum alloy brazing sheet which is thin but high in strength and excellent in corrosion resistance of the inner and outer surfaces of a tube which are contacted with a cooling medium, and a heat exchanger.;SOLUTION: A solder material 2 of an Al-Si type aluminum alloy is formed on one surface of an aluminum alloy core material 1 of 0.14 mm or below thickness, and an aluminum alloy skin material 3 is formed on the other surface of the core material 1. The solder material 2 contains 0.01-0.08 mass% of In or 0.1-0.8 mass% of Zn. The skin material 3 contains 0.5-5.0 mass% of Zn, and as necessity requires, 0.3-1.2 mass% of Mn, and 0.3-1.0 mass% of Si.;COPYRIGHT: (C)2004,JPO