| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an aluminum alloy fin material for a heat exchanger excellent in collar crack resistance, which can suppress occurrence of collar cracks during molding.SOLUTION: An aluminum alloy fin material for a heat exchanger is made from an aluminum alloy containing Fe: 0.010 to 0.4 mass% with the balance Al with inevitable impurities and has an Al purity of 99.30 mass% or more, and a thickness of the aluminum alloy fin material for a heat exchanger is less than 0.115 mm, an average particle diameter of a subgrain is 2.5μm or less and intermetallic compounds having a maximum length of over 3μm is 2000/mmor less.</p> |
