Heat exchanger aluminum alloy fin material and method for producing same

摘要

This heat exchanger aluminum alloy fin material: has an Fe concentration of 0.20-1.0 mass% and a Cu concentration of 0.02-0.1 mass%; suppresses Si concentration to 0.15 mass% or less, Mn concentration to 0.015 mass% or less, and Cr concentration to 0.015 mass% or less; and has the remainder comprise Al and inevitable impurities. Therein, the thickness of the heat exchanger aluminum alloy fin material is 0.1mm or less, the average particle diameter of the subgrains is 2.5μm or less, and the volume fraction ofβ-Fiber is 80% or more. This fin material makes it possible to suppress the occurrence of collar cracking during forming.