| abstract |
A long-life aluminum alloy with high corrosion resistance and a tube made of the alloy and having a spiral groove are provided. The aluminum alloy is preferably from 1.0 to 1.5 wt% Mn, at most 0.1 wt% Mg, at most 0.3 wt% Si, at most 0.3 wt% Fe, at most 0.1 wt% Cu, at most 0.25 wt% Cr, at most 0.1 wt% Ni, at most 0.3 wt% Zn, up to 0.1 wt% Ti, up to 0.2 wt% Zr, and unavoidable impurities up to 0.05 wt% each, the total amount being up to 0.15 wt%, the balance aluminum. The heat exchanger includes tubes and fins formed from aluminum tubes. |