| 摘要 |
PROBLEM TO BE SOLVED: To provide a clad material of a high-strength aluminum alloy excellent in brazability for a heat exchanger, which has high strength and excellent brazability, and can be suitably used in the heat exchanger, particularly as a raw material of a tube material, a header plate material and a piping material of an automotive heat exchanger.SOLUTION: The clad material of the aluminum alloy comprises a core material, a skin material 1 cladding one face of the core material, and a skin material 2 cladding other face of the core material. The core material is an Al-Mn-Si-Mg-based aluminum alloy which includes, by mass%, 0.8-2.0% Mn, 0.2-2.0% Si, 0.2-1.5% Mg and the balance aluminum with unavoidable impurities. The skin material 1 is an Al-Si-based aluminum alloy which includes 2.5-6.0% Si, 0.3-1.8% Mn and the balance aluminum with unavoidable impurities. The skin material 2 is an aluminum alloy which includes one or more of 0.5-10% Zn, 0.001-0.1% In and 0.001-0.1% Sn and the balance aluminum with unavoidable impurities. |
