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CuNi1 NC003 Copper Nickel Alloy With Moderate Strength In Seawater Environments

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CuNi1 NC003 Copper Nickel Alloy With Moderate Strength In Seawater Environments

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Brand Name : Senphus

Model Number : CuNi1/NC003

Certification : ISO9001

Place of Origin : Jiangsu, China

MOQ : 5kg

Payment Terms : T/T, D/P

Supply Ability : 30 Tons per day

Delivery Time : 3 days

Packaging Details : Packed with waterproof paper or weave bag, into pallets or wooden case. Special packaging requirements can also be accommodated.

Name : CuNi1/NC003

Type : Nickel wire

Application : Heating,household electrical application

Color : Silvery White/bright or oxidized

Max.continuous operating temperature℃ : 200

Resistivity : 0.03 ±10%

Melting temperature in ℃ : 1085

Min.tensile strength in N/mm2 : 210

Elongation : 25

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CuNi1 NC003 Copper Nickel Alloy With Moderate Strength In Seawater Environments

CuNi1 NC003 Copper-Nickel Alloy Wire is a copper-nickel alloy with approximately 1% nickel and the remainder being copper, designed for use in a variety of marine, corrosive, and electrical applications. The alloy combines the beneficial properties of both copper and nickel, offering good corrosion resistance, improved strength, and excellent thermal and electrical conductivity. Due to its composition, CuNi1 NC003 is well-suited for environments where both durability and resistance to corrosion are essential. CuNi1 NC003 Copper-Nickel Alloy Wire is a versatile alloy with 1% nickel and the remainder copper, ideal for marine and electrical applications. Its outstanding corrosion resistance, good electrical and thermal conductivity, and moderate strength make it particularly suitable for use in seawater environments, marine hardware, heat exchangers, and electrical components. It offers excellent performance in challenging environments, though it may not have the same strength or conductivity as alloys with higher nickel content.

Main technical data

Type CuNi1 NC003 CuNi2 NC005 CuNi4 NC007 CuNi6 NC010 CuNi8 NC012 CuMn3 MC012 CuNi10 NC015 CuNi14 NC020 CuNi19 NC025 CuNi23 NC030 CuNi30 NC035 CuNi34 NC040 CuNi44 NC050
Composition(%) Cu Rest Rest Rest Rest Rest Rest Rest Rest Rest Rest Rest Rest Rest
Mn / / / / / 3 / 0.3 0.5 0.5 1.0 1.0 1.0
Ni 1 2 4 6 8 　 10 14.2 19 23 30 34 44
Max.continuous operating temperature(℃) 200 200· 200 220 250 200 250 300 300 300 350 350 400
Resistivity at 20℃(μ m) 0.03
±10%		 0.05
±10%		 0.07
±10%		 0.10
±10%		 0.12
±10%		 0.12
±10%		 0.15
±10%		 0.20
±5%		 0.25
±5%		 0.30
±5%		 0.35
±5%		 0.40
±5%		 0.49
±5%
Resisitance-temperature coefficient 20-600℃ (×10-5/℃) ＜ 100 ＜ 120 ＜ 50 ＜ 60 ＜ 57 ＜ 38 ＜ 50 ＜ 38 ＜ 25 ＜ 16 ＜ 10 ＜ -0 ＜ -6
Thermovoltage to
copper at 20℃ in (μV/K)		 -8 -12 -12 -18 -22 1 -25 -28 -32 -34 -37 -39 -43
Mean coefficient of linear thermal expansion, in (10-6/K) , at a temperature between 20 ℃ and 400 ℃ 17.5 17.5 17.5 17.5 17.5 18 17.5 17.5 17.5 17.5 17.0 16.0 15.0
Thermal conductance
at 20℃ (W/mK)		 145 130 130 92 75 84 59 48 38 33 27 25 23
Specific heat capacity at 20℃ in (20℃ J/gK) 0.38 0.38 0.38 0.38 0.38 0.39 0.38 0.38 0.38 0.38 0.39 0.40 0.41
Density at 20 ℃(g/cm3) 8.9 8.9 8.9 8.9 8.9 8.8 8.9 8.9 8.9 8.9 8.9 8.9 8.9
Melting temperature in (℃) 1085 1090 1090 1095 1097 1050 1100 1115 1135 1150 1170 1180 1280
Min.tensile strength in (N/mm2) 210 220 220 250 270 290 290 310 340 350 400 400 420
Elongation(%) 25 25 25 25 25 25 25 25 25 25 25 25 25

Technical data table

Diameter(mm) NC003 CuNi1 NC005 CuNi2 NC007 CuNi4 NC010 CuNi6 NC012 CuNi8 NC015 CuNi10 NC020 CuNi14 NC025 CuNi19 NC030 CuNi23 NC035 CuNi30 NC040 CuNi34 NC050 CuNi44
0.10 3.82 6.36 8.91 12.73 15.28 19.09 25.46 31.83 38.19 44.56 50.93 62.39
0.11 3.16 5.26 7.37 10.52 12.63 15.78 21.04 26.30 31.56 36.82 42.09 51.56
0.12 2.65 4.42 6.19 8.84 10.61 13.26 17.68 22.10 26.52 30.94 35.37 43.33
0.13 2.26 3.76 5.27 7.53 9.04 11.30 15.07 18.83 22.60 26.36 30.14 36.92
0.14 1.95 3.24 4.55 6.49 7.80 9.74 12.99 16.24 19.48 22.73 25.98 31.83
0.15 1.70 2.82 3.96 5.65 6.79 8.48 11.31 14.14 16.97 19.80 22.64 27.73
0.16 1.49 2.48 3.48 4.97 5.97 7.46 9.95 12.43 14.92 17.40 19.89 24.37
0.17 1.32 2.20 3.08 4.40 5.29 6.60 8.81 11.01 13.21 15.41 17.62 21.59
0.18 1.18 1.96 2.75 3.92 4.72 5.89 7.86 9.82 11.78 13.75 15.72 19.26
0.19 1.06 1.76 2.47 3.52 4.23 5.29 7.05 8.81 10.58 12.34 14.11 17.28
0.20 0.95 1.59 2.23 3.18 3.82 4.77 6.36 7.95 9.54 11.14 12.73 15.60
0.21 0.87 1.44 2.02 2.88 3.46 4.33 5.77 7.21 8.66 10.10 11.55 14.15
0.22 0.79 1.31 1.84 2.63 3.16 3.94 5.26 6.57 7.89 9.20 10.52 12.89
0.23 0.72 1.20 1.68 2.40 2.89 3.61 4.81 6.01 7.22 8.42 9.63 11.79
0.24 0.66 1.10 1.55 2.21 2.65 3.31 4.42 5.52 6.63 7.73 8.84 10.83
0.25 0.61 1.01 1.43 2.03 2.44 3.05 4.07 5.09 6.11 7.13 8.15 9.98
0.26 0.57 0.94 1.32 1.88 2.26 2.82 3.77 4.70 5.65 6.59 7.53 9.23
0.27 0.52 0.87 1.22 1.74 2.10 2.61 3.49 4.36 5.23 6.11 6.99 8.56
0.28 0.49 0.81 1.14 1.62 1.95 2.43 3.25 4.06 4.87 5.68 6.50 7.96
0.29 0.45 0.75 1.06 1.51 1.82 2.27 3.03 3.78 4.54 5.29 6.06 7.42
0.30 0.42 0.70 0.99 1.41 1.70 2.12 2.83 3.53 4.24 4.95 5.66 6.93
0.31 0.40 0.66 0.93 1.32 1.59 1.98 2.65 3.31 3.97 4.63 5.30 6.49
0.32 0.37 0.62 0.87 1.24 1.49 1.86 2.49 3.11 3.73 4.35 4.97 6.09
0.33 0.35 0.58 0.82 1.17 1.40 1.75 2.34 2.92 3.51 4.09 4.68 5.73
0.34 0.33 0.55 0.77 1.10 1.32 1.65 2.20 2.75 3.30 3.85 4.41 5.40
0.35 0.31 0.51 0.73 1.03 1.25 1.55 2.08 2.60 3.11 3.63 4.16 5.09
0.36 0.29 0.49 0.69 0.98 1.18 1.47 1.96 2.46 2.94 3.43 3.93 4.81
0.37 0.28 0.46 0.65 0.93 1.12 1.39 1.86 2.33 2.79 3.25 3.72 4.56
0.38 0.26 0.44 0.62 0.88 1.06 1.32 1.76 2.20 2.64 3.08 3.53 4.32
0.40 0.24 0.39 0.56 0.79 0.95 1.19 1.59 1.99 2.38 2.78 3.18 3.90
0.41 0.23 0.37 0.53 0.76 0.91 1.13 1.51 1.89 2.27 2.65 3.03 3.71
0.42 0.22 0.36 0.51 0.72 0.87 1.08 1.44 1.80 2.16 2.52 2.89 3.54
0.43 0.21 0.34 0.48 0.69 0.83 1.03 1.38 1.72 2.06 2.41 2.75 3.37
0.44 0.20 0.32 0.46 0.66 0.79 0.98 1.31 1.64 1.97 2.30 2.63 3.22
0.45 0.19 0.31 0.44 0.63 0.75 0.94 1.26 1.57 1.88 2.20 2.52 3.08
0.46 0.18 0.30 0.42 0.60 0.72 0.90 1.20 1.50 1.80 2.10 2.41 2.95
0.47 0.17 0.28 0.40 0.58 0.69 0.86 1.15 1.44 1.72 2.01 2.31 2.82
0.48 0.17 0.27 0.39 0.55 0.66 0.82 1.10 1.38 1.65 1.93 2.21 2.71
0.49 0.16 0.26 0.37 0.53 0.64 0.79 1.06 1.33 1.59 1.85 2.12 2.60
0.50 0.15 0.25 0.36 0.51 0.61 0.76 1.01 1.27 1.52 1.78 2.04 2.50
0.51 0.15 0.24 0.34 0.49 0.59 0.73 0.98 1.22 1.46 1.71 1.96 2.40
0.52 0.14 0.23 0.33 0.47 0.57 0.70 0.94 1.18 1.41 1.65 1.88 2.31
0.53 0.14 0.22 0.32 0.45 0.54 0.67 0.91 1.13 1.35 1.59 1.81 2.22
0.54 0.13 0.22 0.31 0.44 0.52 0.65 0.87 1.09 1.30 1.53 1.75 2.14
0.55 0.13 0.21 0.29 0.42 0.51 0.63 0.84 1.05 1.26 1.47 1.68 2.06
0.56 0.12 0.20 0.28 0.41 0.49 0.60 0.81 1.02 1.21 1.42 1.62 1.99
0.57 0.12 0.19 0.27 0.39 0.47 0.58 0.78 0.98 1.17 1.37 1.57 1.92
0.58 0.11 0.19 0.27 0.38 0.45 0.56 0.76 0.95 1.13 1.32 1.51 1.85
0.59 0.11 0.18 0.26 0.37 0.44 0.54 0.73 0.91 1.09 1.28 1.46 1.79
0.60 0.11 0.18 0.25 0.35 0.42 0.53 0.71 0.88 1.06 1.24 1.41 1.73
  • Tolerance of ohm/m: ±5%
  • Round wire: range from 0.04mm (0.0016″) to 12mm (0.4724″)
  • Ribbon: range from 0.05mm (0.002″) to 6mm (0.2362″), Max ratio width : thickness = 10:1

Key Features of CuNi1:

  • Composition:
  • Copper (Cu): ~99% (the primary component, offering excellent electrical and thermal conductivity).
  • Nickel (Ni): ~1% (provides increased strength and corrosion resistance, especially in marine environments and in contact with seawater).
  • Other Elements: Small quantities of iron, manganese, and silicon may be present to improve machinability, strength, and resistance to oxidation.
  • Corrosion Resistance:
  • Excellent Marine Corrosion Resistance: The addition of 1% nickel greatly enhances the alloy's resistance to seawater corrosion, making it a popular choice for marine and offshore applications, including shipbuilding and marine engineering.
  • General Corrosion Resistance: Performs well in corrosive environments, including contact with brine, alkaline solutions, and certain chemicals. The alloy resists the formation of pits and crevices, which are common in high-moisture environments.
  • Stress Corrosion Cracking Resistance: Good resistance to stress corrosion cracking (SCC), particularly in environments prone to chloride-induced stress corrosion.
  • Electrical and Thermal Conductivity:
  • Good Electrical Conductivity: As a copper-based alloy, CuNi1 NC003 maintains high electrical conductivity making it useful in electrical cables, wires, and electronic components.
  • Thermal Conductivity: Offers good thermal conductivity, though it is slightly lower than pure copper, making it suitable for heat transfer applications, including heat exchangers and radiators.
  • Mechanical Properties:
  • Strength and Ductility: CuNi1 NC003 offers moderate strength while retaining good ductility, allowing it to be formed into wires, tubes, strips, and sheets without loss of performance.
  • Tensile Strength: The alloy provides good tensile strength for use in applications requiring mechanical durability, including wires for marine cables or heat exchanger tubes.
  • Formability: Excellent formability allows the alloy to be easily processed into a variety of shapes, including wires, coils, and rods.
  • Weldability and Fabrication:
  • Weldability: CuNi1 NC003 is weldable using conventional methods, including TIG (Tungsten Inert Gas) and MIG (Metal Inert Gas) welding, although care must be taken to avoid oxidation during high-heat welding processes.
  • Machinability: The alloy has good machinability, although it is not as easy to machine as pure copper. Additional machining tools and lubricants may be necessary for more complex fabrication processes.

Applications of CuNi1:

  • Marine and Offshore: CuNi1 NC003 is extensively used in marine engineering, shipbuilding, and offshore oil rigs, where corrosion resistance in seawater is critical. Common applications include seawater pipes, cooling systems, heat exchangers, and marine hardware.
  • Electrical and Electronics: Due to its excellent electrical conductivity, it is used in electrical cables, resistors, connectors, and electronic components that need to function in challenging environments.
  • Heat Transfer Systems: The alloy is also used in heat exchangers, condensers, and radiators, where thermal conductivity and corrosion resistance are important for long-lasting performance.

Applications in High-Temperature Environments:

  • The alloy is suitable for use in environments where there are moderate temperature fluctuations and exposure to high humidity or saltwater, such as marine engines, fuel systems, and steam generators.

Advantages of CuNi1 NC003 Copper-Nickel Alloy Wire:

  • Marine Suitability: Its high resistance to seawater corrosion makes it a preferred material for marine applications, including heat exchangers, marine cables, and offshore platforms.
  • Good Strength and Ductility: Offers moderate strength and excellent ductility, making it versatile for various mechanical applications.
  • Electrical and Thermal Conductivity: Retains good electrical conductivity and thermal conductivity, allowing its use in electrical wiring and heat transfer applications.
  • Corrosion Resistance: Resistant to stress corrosion cracking, pitting, and general corrosion, ensuring longevity in harsh, corrosive environments.

CuNi1 NC003 Copper Nickel Alloy With Moderate Strength In Seawater EnvironmentsCuNi1 NC003 Copper Nickel Alloy With Moderate Strength In Seawater EnvironmentsCuNi1 NC003 Copper Nickel Alloy With Moderate Strength In Seawater Environments


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