| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a combination press aluminum alloy fin material for a heat exchanger which is excellent in collar cracking resistance and capable of preventing generation of a collar cracking during molding, intended for a combination press fin material.SOLUTION: There is provided a combination press aluminum alloy fin material for a heat exchanger consisting of an aluminum alloy containing Fe: 0.010 to 0.4 mass% and the balance Al with inevitable impurities and having Al purity of 99.30 mass% or more, and having a thickness of less than 0.115 mm, an average particle diameter of subgrains of 2.5μm or less and a bearing force of 100 to 130 N/mm.</p> |
