| 摘要 |
PURPOSE:To obtain a Cu alloy with superior corrosion resistance for a heat exchanger, especially for a radiator by adding specified amounts of Ni, Fe and Pb to brass. CONSTITUTION:An alloy consisting of, by weight, 25-40% Zn, 0.005-0.070% P, 0.05-2.0% Ni, 0.005-1.3% in total of 0.005-1.0% Fe and/or 0.005-0.3% Pb and the balance Cu is cold-rolled at about 3-20% draft after final annealing. The grain size of the alloy may be adjusted to <= about 0.015mm. by the final annealing, and the alloy having the adjusted grain size may be cold-worked at about 3-20% draft. The resulting alloy has superior corrosion resistance and low sensitivity to weld crack as a material for a radiator.
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