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AssigneeUacj Corporation
InventorsTomohiro Shoji, Naoki Yamashita, Toshikazu Tanaka, Hirokazu Tanaka
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A three-layer clad material includes a core material, a cladding material 1, and a cladding material 2, the core material including an aluminum alloy that includes 0.5 to 1.8% of Mn, and either or both of more than 0.05% and less than 0.2% of Cu, and 0.05 to 0.30% of Ti, with the balance being Al and unavoidable impurities, the cladding material 1 including an aluminum alloy that includes 3 to 10% of Si, and 1 to 10% of Zn, with the balance being Al and unavoidable impurities, and the cladding material 2 including an aluminum alloy that includes 3 to 13% of Si, and 0.05% or less of Cu, with the balance being Al and unavoidable impurities, wherein the Si content X (%) in the cladding material 1 and the Si content Y (%) in the cladding material 2 satisfy the value (Y-X) is −1.5 to 9%.
An aluminum alloy clad material for heat exchangers that is a three-layer clad material that comprises a core material, a first cladding material, and a second cladding material, one side of the core material being clad with the first cladding material, the other side of the core material being clad with the second cladding material, the core material comprising an aluminum alloy that comprises 0.5 to 1.8 mass % of Mn, and either or both of more than 0.05 mass % and less than 0.2 mass % of Cu, and 0.05 to 0.30 mass % of Ti, with the balance being Al and unavoidable impurities, the first cladding material comprising an aluminum alloy that comprises 3 to 10 mass % of Si, and 1 to 10 mass % of Zn, with the balance being Al and unavoidable impurities, and the second cladding material comprising an aluminum alloy that comprises 3 to 13 mass % of Si, and 0.05 mass % or less of Cu, with the balance being Al and unavoidable impurities, wherein an Si content X (%) in the first cladding material and an Si content Y (%) in the second cladding material satisfy a value (Y-X) is −1.5 to 9%, and the aluminum alloy clad material is used in a state in which the first cladding material comes on the air side.
Dependencies are inferred from the claim text.