| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a drawless press aluminum alloy fin material for a heat exchanger which exhibits excellent collar-cracking resistance which can suppress the occurrence of collar cracking during a molding process. <P>SOLUTION: The drawless press aluminum alloy fin material for a heat exchanger is formed from aluminum alloy which contains 0.010 to 0.4 mass% of Fe, the remainder of which is formed from Al and unavoidable impurities, and in which the Al purity is at least 99.30 mass%. The drawless press aluminum alloy fin material for a heat exchanger is characterized by having a thickness of less than 0.115 mm, having a subgrain average particle diameter of 2.5 μm or less and proof stress of at least 130 N/mm<SP POS="POST">2</SP>. <P>COPYRIGHT: (C)2013,JPO&INPIT |
