CORROSION-RESISTANT AND SOIL-RESISTANT COPPER ALLOY IN SEA WATER

摘要

PURPOSE:To obtain the present copper alloy having excellent corrosion resistance, copper ion elusion resistance and the prevention of sticking of organisms, etc., at low cost by specifying the compsn. consisting of Ni, Fe, Mn, Al and Cu. CONSTITUTION:Said corrosion-resistant and soil-resistant copper alloy in sea water has the compsn. contg., by weight, 7.0-11.0% Ni, 0.1-1.5% Fe, 1.0-4.0% Mn, 0.01-1.0% Al and the balance Cu with inevitable impurities. The alloy is obtd. by adding suitable amounts of Al to cupronickel alloy having optimum compsn. Said copper alloy combines corrosion resistance, copper ion elusion resistance and soil resistance; it can be obtd. in great qualities at low cost and is effective as the material for the place to be brought into contact with sea water or for the objects to be used for a long period of time in sea water.