| 简介 |
The present invention relates to an aluminum alloy for a heat exchanger tube or pipe with improved corrosion resistance, and a manufacturing method therefor. The aluminum alloy is based on aluminum and comprises : 0.50 wt% or less of Cu; element X [at least one from among rare earth metals of atomic number 57 (La) to atomic number 71 (Lu), Sc, Nb, and Hf] of which the total amount is 0.005-1.0 wt%; and [0.01-2.0 wt% of Mn, (Si+Mg) < 0.65 wt%, and Zn < 4.0 wt%] or [Si ≥ 0.03 wt%, (Mn+Mg+Zn) < 1.0 wt%, and Al ≥ 98.97 wt%] or [0.25-1.4 wt% of Si, 0.4-1.3 wt% of Mg, Mn ≤ 1.0 wt%, and Zn ≤ 0.25 wt%]. In addition, the aluminum alloy may further comprise : at least one element selected from among Fe, Ti, Zr, Cr, V, Ni, Co, In, B, Pb, Bi, Ca, Be, Ag, Pd, Sb, and Y; and other inevitable impurities. When manufacturing a heat exchanger tube or pipe by using the aluminum alloy, the corrosion resistance and strength are improved. |
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