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CuNi Alloy Wire CuNi19 NC025 High Strength For Industrial Applications

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CuNi Alloy Wire CuNi19 NC025 High Strength For Industrial Applications

Country/Region china
City & Province changzhou jiangsu
Categories Structural Steel
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Product Details

CuNi Alloy Wire CuNi19 NC025 High Strength for Industrial Applications

 

CuNi19 is a copper-nickel alloy containing approximately 81% copper and 19% nickel, with small amounts of iron and manganese for enhanced properties. It is renowned for its exceptional corrosion resistance, particularly in seawater and other aggressive environments, and offers excellent resistance to biofouling, stress corrosion cracking, and erosion.

 

This alloy has high mechanical strength, good ductility, and performs well at elevated temperatures, making it ideal for demanding applications. It also has good thermal conductivity, moderate electrical conductivity, and excellent durability, ensuring reliable performance in harsh conditions.

 

Chemical Composition Wt.

%NiMnCu

MIN.

   
MAX.190.5Rest

 

 

Main physical properties:

Max continuous operating temperature ℃300
Resistance temperature coefficient x 10-5/℃(20℃-600℃)<25
Thermovoltage to copper at 20℃ in μV/K-32
Thermal expansion coefficient ×10-6/K(20℃-400℃)17.5
Thermal conductance at 20℃ W/mK38
Specific heat capacity at 20℃ J/gK0.38

 

 

Some key features of CuNi19 include:

  1. Exceptional Corrosion Resistance:

    • High resistance to seawater corrosion, making it ideal for marine and offshore applications.
    • Resistant to stress corrosion cracking, pitting, and erosion in aggressive environments.
  2. Biofouling Resistance:

    • Natural resistance to biofouling minimizes maintenance in marine applications.
  3. High Mechanical Strength:

    • Offers excellent strength, making it suitable for load-bearing and high-pressure systems.
  4. Good Ductility:

    • Retains good ductility for ease of fabrication, welding, and forming into complex shapes.
  5. Thermal Stability:

    • Performs well under high-temperature conditions, making it suitable for power plants and heat exchangers.
  6. Thermal Conductivity:

    • Good heat transfer properties, ideal for heat exchanger tubes, condensers, and cooling systems.
  7. Moderate Electrical Conductivity:

    • Sufficient for applications such as electrical connectors and resistive elements.
  8. Durability:

    • Long-lasting in harsh conditions, including marine, chemical, and industrial environments.
  9. Resistance to Erosion and Abrasion:

    • Performs well in high-velocity seawater and abrasive conditions, reducing material wear.
  10. Ease of Fabrication and Maintenance:

    • Excellent machinability, weldability, and low maintenance requirements over its lifespan.

These features make CuNi19 an ideal material for demanding applications in marine engineering, power generation, chemical processing, and desalination systems.

 

Applications:

1. Marine and Offshore Applications

  • Seawater Piping Systems: Pipes, valves, and fittings for cooling, ballast water, and seawater intakes.
  • Heat Exchangers: Tubing in marine environments, power plants, and desalination systems.
  • Shipbuilding: Structural elements, cladding, and hull components exposed to seawater and biofouling.
  • Marine Hardware: Fasteners, connectors, and other equipment used in saltwater conditions.

2. Power Generation

  • Condensers and Coolers: Tubing in power plants exposed to saline or brackish water.
  • Nuclear Power Plants: Components in cooling systems due to the alloy's high resistance to corrosion and erosion.

3. Chemical and Petrochemical Industries

  • Process Equipment: Heat exchangers, reactors, and piping exposed to aggressive chemicals and elevated temperatures.
  • Storage Tanks: For corrosive liquids and gases.

4. Electronics

  • Electrical Components: Connectors and resistive wires due to moderate electrical conductivity and durability.

5. Desalination Plants

  • Evaporators and Condensers: Used in desalination systems for their resistance to saline water and heat.

6. Architectural Applications

  • Cladding and Roofing: In coastal buildings requiring resistance to saltwater corrosion.

7. Industrial Applications

  • Industrial Heat Exchangers: Used in various industries requiring reliable heat transfer in corrosive environments.

CuNi19’s high corrosion resistance, strength, and thermal stability make it a trusted choice for demanding applications in marine, industrial, and power sectors.

 

 

Main technical data

Type

CuNi1

NC003

CuNi2

NC005

CuNi4

NC007

CuNi6

NC010

CuNi8

NC012

CuMn3

NC012

CuNi10

NC015

CuNi14

NC020

CuNi19

NC025

CuNi23

NC030

CuNi30

NC035

CuNi34

NC040

CuNi44

NC050

Composition(%)CuRestRestRestRestRestRestRestRestRestRestRestRestRest
Mn/////3/0.30.50.51.01.01.0
Ni12468 1014.21923303444
Max.continuous operating temperature(℃)200200·200220250200250300300300350350400
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)
-8-12-12-18-221-25-28-32-34-37-39-43
Mean coefficient of linear thermal expansion, in (10-6/K) , at a temperature between 20 ℃ and 400 ℃17.517.517.517.517.51817.517.517.517.517.016.015.0
Thermal conductance
at 20℃ (W/mK)
14513013092758459483833272523
Specific heat capacity at 20℃ in (20℃ J/gK)0.380.380.380.380.380.390.380.380.380.380.390.400.41
Density at 20 ℃(g/cm3)8.98.98.98.98.98.88.98.98.98.98.98.98.9
Melting temperature in (℃)1085109010901095109710501100111511351150117011801280
Min.tensile strength in (N/mm2)210220220250270290290310340350400400420
Elongation(%)25252525252525252525252525

 

Technical data table

Diameter(mm)NC003 CuNi1NC005 CuNi2NC007 CuNi4NC010 CuNi6NC012 CuNi8NC015 CuNi10NC020 CuNi14NC025 CuNi19NC030 CuNi23NC035 CuNi30NC040 CuNi34NC050 CuNi44
0.103.826.368.9112.7315.2819.0925.4631.8338.1944.5650.9362.39
0.113.165.267.3710.5212.6315.7821.0426.3031.5636.8242.0951.56
0.122.654.426.198.8410.6113.2617.6822.1026.5230.9435.3743.33
0.132.263.765.277.539.0411.3015.0718.8322.6026.3630.1436.92
0.141.953.244.556.497.809.7412.9916.2419.4822.7325.9831.83
0.151.702.823.965.656.798.4811.3114.1416.9719.8022.6427.73
0.161.492.483.484.975.977.469.9512.4314.9217.4019.8924.37
0.171.322.203.084.405.296.608.8111.0113.2115.4117.6221.59
0.181.181.962.753.924.725.897.869.8211.7813.7515.7219.26
0.191.061.762.473.524.235.297.058.8110.5812.3414.1117.28
0.200.951.592.233.183.824.776.367.959.5411.1412.7315.60
0.210.871.442.022.883.464.335.777.218.6610.1011.5514.15
0.220.791.311.842.633.163.945.266.577.899.2010.5212.89
0.230.721.201.682.402.893.614.816.017.228.429.6311.79
0.240.661.101.552.212.653.314.425.526.637.738.8410.83
0.250.611.011.432.032.443.054.075.096.117.138.159.98
0.260.570.941.321.882.262.823.774.705.656.597.539.23
0.270.520.871.221.742.102.613.494.365.236.116.998.56
0.280.490.811.141.621.952.433.254.064.875.686.507.96
0.290.450.751.061.511.822.273.033.784.545.296.067.42
0.300.420.700.991.411.702.122.833.534.244.955.666.93
0.310.400.660.931.321.591.982.653.313.974.635.306.49
0.320.370.620.871.241.491.862.493.113.734.354.976.09
0.330.350.580.821.171.401.752.342.923.514.094.685.73
0.340.330.550.771.101.321.652.202.753.303.854.415.40
0.350.310.510.731.031.251.552.082.603.113.634.165.09
0.360.290.490.690.981.181.471.962.462.943.433.934.81
0.370.280.460.650.931.121.391.862.332.793.253.724.56
0.380.260.440.620.881.061.321.762.202.643.083.534.32
0.400.240.390.560.790.951.191.591.992.382.783.183.90
0.410.230.370.530.760.911.131.511.892.272.653.033.71
0.420.220.360.510.720.871.081.441.802.162.522.893.54
0.430.210.340.480.690.831.031.381.722.062.412.753.37
0.440.200.320.460.660.790.981.311.641.972.302.633.22
0.450.190.310.440.630.750.941.261.571.882.202.523.08
0.460.180.300.420.600.720.901.201.501.802.102.412.95
0.470.170.280.400.580.690.861.151.441.722.012.312.82
0.480.170.270.390.550.660.821.101.381.651.932.212.71
0.490.160.260.370.530.640.791.061.331.591.852.122.60
0.500.150.250.360.510.610.761.011.271.521.782.042.50
0.510.150.240.340.490.590.730.981.221.461.711.962.40
0.520.140.230.330.470.570.700.941.181.411.651.882.31
0.530.140.220.320.450.540.670.911.131.351.591.812.22
0.540.130.220.310.440.520.650.871.091.301.531.752.14
0.550.130.210.290.420.510.630.841.051.261.471.682.06
0.560.120.200.280.410.490.600.811.021.211.421.621.99
0.570.120.190.270.390.470.580.780.981.171.371.571.92
0.580.110.190.270.380.450.560.760.951.131.321.511.85
0.590.110.180.260.370.440.540.730.911.091.281.461.79
0.600.110.180.250.350.420.530.710.881.061.241.411.73
  • 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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