| 摘要 |
PROBLEM TO BE SOLVED: To provide a fin material for brazing which is superior in characteristics, particularly strength after having been heated for brazing, in diffusion resistance against a brazing filler while being heated for brazing and in corrugate formability, and to provide a method for stably manufacturing the fin material. SOLUTION: An aluminum alloy for the fin material for brazing comprises more than 1.4 mass% but 1.8 mass% or less Fe, 0.8 mass% to 1.0 mass% Si, and 1.0 mass% or more but less than 3.0 mass% Mn. The method for manufacturing the fin material comprises: final-intermediate-annealing a sheet with a thickness of 0.1 mm or thinner made from the aluminum alloy so as to give it a crystalline structure in which recrystallized grains having a diameter of 10 mm or larger in a rolling direction occupy 80% or more of the surface area when viewed from the surface; and then cold-rolling it with a sheet-thickness rolling reduction of less than 30%. The fin material is manufactured with the manufacturing method. COPYRIGHT: (C)2006,JPO&NCIPI
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