Copper Nickel

Copper Nickel

Copper-Nickel is also called as Cupronickel, It is an alloy of copper that contains nickel and strengthening elements, such as iron and manganese. It is silver in colour.

Usage

Copper nickel is most commonly used in applications such as electrical and electronic products, tubes for condensers in ships and power plants, various marine products, including valves, pumps, fittings, and sheathing for ship hulls.

Forms

  • Pipes & Tubes.
  • Sheets, Plates and Coils.
  • Forged and Buttweld Fittings.
  • Rods, Bars and Wires.
  • Fasteners.
  • Ferrous and Non Ferrous.
Copper Nickel Pipes
Schedule SCH5, SCH10, SCH10S, SCH20, SCH30, SCH40, SCH40S, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS.
Standard ASTM B 466 ASME SB 466 / ASTM B 467 ASME SB 467
Form SEAMLESS / ERW / WELDED IN ROUND & SQUARE.
Copper Nickel Tubes
Schedule SCH5, SCH10, SCH10S, SCH20, SCH30, SCH40, SCH40S, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS.
Standard ASTM B75 B88 B280, GB/T1527-2006, JIS H3300-2006, ASTM B75M, ASTM B42, ASTM B111, ASTM B395, ASTM B359, ASTM B188, ASTM B698, ASTM B640, ASTM B280, ASTM B68, ASTM B75, ASTM B88, ASTM B837, ASTM 306, ASTM B469, ASTM B466, ASTM B552, ASTM B543, ASTM B608, ASTM B467, ASTM B111, ASTM B359, EN1057.
Form SEAMLESS / ERW / WELDED IN ROUND & SQUARE.
Copper Nickel Plate, Sheet and Coil
Standard MSRR, AMS, BS ASTM B171 , ASME SB171, ASTM B122 / ASME SB122.
Form SEAMLESS / ERW / WELDED IN ROUND & SQUARE.
Copper Nickel Bars
Standard ASTM B151,
Form SEAMLESS / ERW / WELDED IN ROUND & SQUARE.
Copper Nickel Wires
Standard ASTM B206,
Form SEAMLESS / ERW / WELDED IN ROUND & SQUARE.

Chemical Compositions

Chemical Composition Weight percentage
Nickel [Ni] 23.5-26.5 %
Mangnese [Mn] 0.1-0.5%
Zinc [Zn] Zinc=1% Max
Lead [Pb] 0.05 % Maximum
Copper [Cu] 71.5-76.5 %
Iron [Fe] 0.2% max

Mechanical properties of Copper Nickel

Cast Cu-Ni alloys to EN 1982; Physical properties1of two generally known alloys
Symbol Melting range °C Electrical conductivity at 20°C
m/( Ω . mm2)		 Thermal conductivity at 20°C
W/(m . K)		 Coefficient of expansion (25 to 300°C)
10-6/K		 Elastic modulus Ε kN/mm2
CuNi10Fe1Mn1-C 1105-1140 5.5 59 17 123
CuNi30Fe1Mn1NbSi-C 1170-1240 2.5 29 16 145
1Density of both materials is 8.9 kg/dm3

Physical Properties of Copper Nickel

Cu-Ni resistance alloys to DIN 17471; Electrical resistivity in annealed condition and upper application temperatures (guide values)
Identification symbol DIN 17471 Electrical resistivity in Ω . mm2/m Temperature coefficient of electrical resistance between 20 and 105° C
10-6/K		 Upper appl-ication limit in air
°C
20°C 100°C 200°C 300°C 400°C 500°C
CuNi2 0.051 0.057 0.064 – – – +1000 to +1600 300
CuNi6 0.101 0.107 0.114 0.123 – – +500 to +900 300
CuNi10 0.151 0.156 0.162 0.169 0.175 – +350 to +450 400
CuNi23-Mn 0.302 0.308 0.315 0.323 0.331 0.339 +220 to +280 500
CuNi30-Mn 0.402 0.404 0.410 0.417 0.424 0.432 +80 to +130 500
CuNi44 0.492 0.49 0.49 0.49 0.49 0.49 -80 to +40 600
1Allowable deviation 10%
2Allowable deviation 5%