Anticorrosion copper alloys

Alloys or metallic compositions – Copper base – Nickel containing

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420497, C22B 2500

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active

044068590

ABSTRACT:
Anticorrosion copper alloy essentially consisting of 4.5-32 wt % of Ni, 0.3-2.5 wt % of Fe, one or more elements selected from 0.01-1.0 wt % of In, 0.003-0.2 wt % of Pd and 0.003-0.1 wt % of Pt, and the balance of Cu and normal impurities. Further, an anticorrosion copper alloy essentially consisting of 4.5-22 wt % of Ni, 1.3-2.5 wt % of Fe, one or more elements selected from 0.1-1.0 wt % of In, 0.01-0.2 wt % of Pd and 0.01-0.1 wt % of Pt, and the balance of Cu and normal impurities; and said Fe being kept in a state of solid solution in a matrix of said copper alloy.

REFERENCES:
patent: 2074604 (1937-03-01), Bolton et al.
patent: 2215905 (1940-09-01), Kihlgren
patent: 3728106 (1973-04-01), Badia et al.
patent: 4034954 (1977-07-01), Scherbner
"Copper-Nickel Alloy In-838", Date Unknown, International Nickel Company, Inc.
"Why Copper-Nickel Alloys for Desalination", 1966, International Nickel Company, Inc.
"Corrosion Resisting Characteristics of Iron Modified 90:10 Cupro-Nickel Alloy", 1952, Corrosion, vol. 8, pp. 259-277.
"Heat Treatment and Corrosion Resistance of Cr-Modified Cu-Ni" Nov. 23, 1976, International Nickel Co., Inc., No. 949-OP.
"Effect of Alloying and Residual Elements on Strength and Hot Ductility of Cast Cupro-Nickel", J. Metals, Mar. 1978, pp. 20-25.
Pearson, C., "Role of Iron in the Inhibition of Corrosion of Marine Heat Exchangers-A Review", Br. Corros. J., 1972, vol. 7, pp. 61-68.
Abstract of "1982 Annual Book of ASTM Standards", pp. 1245, 1248, 1249.
D. B. Anderson et al., "Chromium Modified Copper-Nickel Alloys for Improved Seawater Impingement Resistance", Transactions of the ASME, Apr. 1973, pp. 132-135.

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