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CuNi Alloy CuNi10 NC015 2.0811 C70700 Low Resistance Heating Alloy Wire for Diverse Applications Low Resistance Heating Alloy Wire for Diverse Applications in Modern Engineering and Technology

CuNi Alloy CuNi10 NC015 2.0811 C70700 Low Resistance Heating Alloy Wire for Diverse Applications in Modern Engineering and Technology

CuNi10 is a copper-nickel alloy containing 90% copper and 10% nickel, with small amounts of iron and manganese to enhance its properties. Known for its excellent corrosion resistance, particularly in marine environments, it is widely used in seawater systems and applications requiring durability in harsh conditions. The alloy resists biofouling, stress corrosion, and erosion, making it highly reliable in demanding environments.

CuNi10 offers good mechanical strength and ductility, facilitating fabrication into pipes, fittings, and other components. It also exhibits high thermal conductivity, making it suitable for heat exchangers and condensers, particularly in power plants, desalination systems, and chemical industries. Its moderate electrical conductivity allows its use in specific electrical applications, such as resistance wires and connectors.

Key applications include marine piping, shipbuilding, heat exchangers, and condensers, as well as architectural cladding and roofing in coastal areas. It is also used in coinage for its wear resistance and aesthetic qualities. CuNi10 is favored in industries such as marine engineering, power generation, petrochemicals, and electronics due to its combination of corrosion resistance, strength, and thermal conductivity. This makes it an ideal choice for components exposed to seawater, aggressive chemicals, or high-temperature environments.

JIS

ASTM

ISO

DIN/EN

GOST

JB /T 6454-2008

CuNi10

NC015

JIS C2532-1999

C7071

C70700

90Cu-10Ni

C70700

CuNi10

C70700

DIN 17471-1983

CuNi10

C70700

2.0811

MH10

707B

C70700

Main physical properties:

Max continuous operating temperature ℃	250
Resistance temperature coefficient x 10^-5/℃(20℃-600℃)	<50
Thermovoltage to copper at 20℃ in μV/K	-25
Thermal expansion coefficient ×10^-6/K(20℃-400℃)	17.5
Thermal conductance at 20℃ W/mK	59
Specific heat capacity at 20℃ J/gK	0.38

Some key features of CuNi10 include:

1. Corrosion Resistance

Excellent resistance to seawater corrosion, particularly against pitting and crevice corrosion.
Resistant to biofouling and chloride stress corrosion cracking, making it ideal for marine applications.

2. Strength and Durability

Higher mechanical strength compared to pure copper, achieved through the addition of nickel.
Maintains durability even in harsh environmental conditions.

3. Thermal and Electrical Conductivity

Good thermal conductivity, though slightly lower than pure copper.
Moderate electrical conductivity, suitable for certain electrical applications where corrosion resistance is essential.

4. Fabrication and Machinability

Easily fabricated through methods such as welding, brazing, and soldering.
Good formability and can be cold or hot worked.

5. Resistance to Erosion

Excellent resistance to erosion in flowing seawater, making it suitable for piping and heat exchanger systems.

6. Antimicrobial Properties

Inherent antimicrobial characteristics of copper reduce microbial growth, helpful in medical and marine environments.

7. Compatibility

Compatible with other materials commonly used in marine environments, such as steels and other copper alloys.

Applications:

1. Marine and Offshore Applications
Piping Systems: For seawater desalination, cooling, and ballast systems.
Heat Exchangers and Condensers: Tubes used in ship engines and marine plants.
Seawater Intakes and Outlets: Resistant to biofouling and seawater corrosion.
Shipbuilding: Cladding and structural elements to resist biofouling and erosion.
Marine Fasteners and Hardware: Bolts, nuts, and connectors exposed to seawater.
2. Power Generation
Cooling Systems: Heat exchanger tubing in power plants.
Steam Turbines and Condensers: For components exposed to saline environments.
Nuclear Power Plants: Reliable in high-temperature and corrosive conditions.
3. Chemical and Petrochemical Industries
Process Equipment: Reactors and vessels exposed to corrosive chemicals.
Heat Exchangers: Efficient in transferring heat in aggressive environments.
4. Architecture
Cladding and Roofing: For buildings in coastal or high-humidity areas to resist weathering and corrosion.
5. Coinage
Coins: Used due to its durability, wear resistance, and aesthetic appearance (often in alloys with zinc or tin).
6. Electronics
Resistor Wires: Due to its stable electrical resistivity.
Electrical Connectors: Moderate electrical conductivity and corrosion resistance make it suitable for connectors exposed to harsh environments.
7. Desalination Plants
Heat Exchanger Tubes: Used in evaporators and condensers where resistance to saline and high-temperature environments is critical.
8. Automotive
Hydraulic Lines and Brake Components: For systems requiring corrosion resistance and ductility.
CuNi10's versatility, resistance to biofouling, and durability make it indispensable in applications where long-term performance in challenging environments is essential.

Type		CuNi10NC015
Composition(%)	Cu	Rest
	Mn	/
	Ni	10
Max.continuous operating temperature(℃)		250
Resistivity at 20℃(μ m)		0.15 ±10%
Resisitance-temperature coefficient 20-600℃ (×10-5/℃)		＜ 50
Thermovoltage to copper at 20℃ in (μV/K)		-25
Mean coefficient of linear thermal expansion, in (10^-6/K) , at a temperature between 20 ℃ and 400 ℃		17.5
Thermal conductance at 20℃ (W/mK)		59
Specific heat capacity at 20℃ in (20℃ J/gK)		0.38
Density at 20 ℃(g/cm3)		8.9
Melting temperature in (℃)		1100
Min.tensile strength in (N/mm²⁾		290
Elongation(%)		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
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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