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China CuNi8 NC012 C71500 The Optimal CuNi Alloy for Marine Applications High Strength and Durable Corrosion Resistance Performance for sale
China CuNi8 NC012 C71500 The Optimal CuNi Alloy for Marine Applications High Strength and Durable Corrosion Resistance Performance for sale
China CuNi8 NC012 C71500 The Optimal CuNi Alloy for Marine Applications High Strength and Durable Corrosion Resistance Performance for sale
China CuNi8 NC012 C71500 The Optimal CuNi Alloy for Marine Applications High Strength and Durable Corrosion Resistance Performance for sale

CuNi8 NC012 C71500 The Optimal CuNi Alloy for Marine Applications High Strength and Durable Corrosion Resistance Performance

Price Negotiable
MOQ: 5kg
Delivery Time: 3 days
Brand: Senphus
Product Description

CuNi8 NC012 C71500 The Optimal CuNi Alloy for Marine Applications High Strength and Durable Corrosion Resistance Performance

 

CuNi8 is a copper-nickel alloy containing approximately 92% copper and 8% nickel, with small additions of elements like iron and manganese to enhance its properties. Known for its excellent resistance to corrosion, especially in marine environments, CuNi8 is a reliable choice for applications exposed to seawater, aggressive chemicals, and elevated temperatures.

 

CuNi8 exhibits very good resistance to various types of water, including seawater, and is not sensitive to stress corrosion cracking.It has good erosion and cavitation resistance, making it suitable for marine applications such as shipbuilding, paper machine construction, and chemical industry fittings.

 

Main physical properties:

Max continuous operating temperature ℃

 250
Resistance temperature coefficient x 10-5/℃(20℃-600℃) <57
Thermovoltage to copper at 20℃ in μV/K -22
Thermal expansion coefficient ×10-6/K(20℃-400℃) 17.5
Thermal conductance at 20℃ W/mK 75
Specific heat capacity at 20℃ J/gK 0.38

 

 

Some key features of CuNi-8 include:

  1. High Corrosion Resistance:

    • Excellent resistance to seawater corrosion, making it ideal for marine environments.
    • Resistant to biofouling and stress corrosion cracking, enhancing its longevity in harsh conditions.

  2. Good Mechanical Strength:

    • Offers strong structural integrity while maintaining good ductility for ease of fabrication.

  3. Thermal Conductivity:

    • Moderate thermal conductivity, suitable for heat exchange applications such as condensers and heat exchangers.

  4. Moderate Electrical Conductivity:

    • Suitable for electrical components, including connectors and resistance wires, with a good balance of conductivity.

  5. Durability:

    • Strong resistance to erosion and wear, particularly in marine and industrial applications.

  6. Workability:

    • Good weldability and machinability, making it easy to fabricate into complex shapes and components.

  7. Biofouling Resistance:

    • Naturally resists the growth of marine organisms, reducing maintenance in seawater systems.

  8. Long Service Life:

    • Due to its corrosion resistance and mechanical properties, CuNi8 has an extended service life in demanding environments.

These features make CuNi8 highly suitable for applications in marine, power generation, desalination, electronics, and architecture, where corrosion resistance and strength are critical.

 

Applications: 

1. Marine and Offshore Applications:

  • Seawater Piping Systems: Pipes, valves, and fittings for cooling, desalination, and seawater intake systems due to its excellent resistance to seawater corrosion.
  • Shipbuilding: Hulls, propellers, and other structural components that require durability in marine conditions.
  • Marine Hardware: Fasteners, bolts, and other components exposed to seawater, where resistance to corrosion and biofouling is essential.

2. Heat Exchangers and Condensers:

  • Power Plants: Tubing in heat exchangers and condensers for power generation, where durability and efficient heat transfer are required.
  • Desalination Plants: Used in evaporators, condensers, and other systems for seawater desalination.

3. Electrical Applications:

  • Connectors: Due to its moderate electrical conductivity and corrosion resistance, CuNi8 is used in electrical connectors exposed to harsh environments.
  • Resistance Wires: Used in electrical resistive elements that require both stability and longevity.

4. Coinage:

  • Coins: CuNi8 is used for producing coins due to its aesthetic appearance, wear resistance, and corrosion resistance.

5. Architectural Applications:

  • Cladding and Roofing: Used in coastal and industrial buildings for corrosion-resistant cladding and roofing materials, particularly in areas where exposure to saltwater is high.

6. Chemical and Petrochemical Industries:

  • Corrosion-Resistant Equipment: In components exposed to aggressive chemicals, CuNi8 offers a robust solution for tanks, reactors, and piping systems.

CuNi8’s combination of corrosion resistance, strength, and thermal properties makes it ideal for use in applications requiring high durability and resistance to harsh environments, particularly in marine, industrial, and electrical fields.

 

​​​​Technical data table

Type CuNi1NC003 CuNi2NC005 CuNi4NC007 CuNi6NC010 CuNi8NC012 CuMn3NC012 CuNi10NC015 CuNi14NC020 CuNi19NC025 CuNi23NC030 CuNi30NC035 CuNi34NC040 CuNi44NC050
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

 

 

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

 

 

 

 

 

 

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Company Jiangyin Chengxin Alloy Material Co., Ltd ，
Location Building 3, No. 29, Beitanghe East Road, Qinglong Street, Tianning District, Changzhou City, Jiangsu Province
Contact Person Changfeng Ye

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