Aluminium alloy extruded tube material for heat exchanger using natural refrigerant

摘要

An aluminum alloy extruded tube material for a heat exchanger using a natural refrigerant, which is composed of an aluminum alloy containing 0.1 to 0.5% by mass of Si, 0.3 to 0.8% by mass of Fe, 0.5 to 1.5% by mass of Mn, 0.05 to 0.25% by mass of Cu, 0.05 to 0.25% by mass of Ti, and 0.05 to 0.30% by mass of V, the balance being aluminum and an unavoidable impurity(s).