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

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

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Brand Name :	Senphus
Model Number :	CuNi8/NC012/C71500
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Payment Terms :	T/T, D/P
Supply Ability :	30 Tons per day
Delivery Time :	3 days
Certification :	ISO9001

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

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:

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.
Good Mechanical Strength:
- Offers strong structural integrity while maintaining good ductility for ease of fabrication.
Thermal Conductivity:
- Moderate thermal conductivity, suitable for heat exchange applications such as condensers and heat exchangers.
Moderate Electrical Conductivity:
- Suitable for electrical components, including connectors and resistance wires, with a good balance of conductivity.
Durability:
- Strong resistance to erosion and wear, particularly in marine and industrial applications.
Workability:
- Good weldability and machinability, making it easy to fabricate into complex shapes and components.
Biofouling Resistance:
- Naturally resists the growth of marine organisms, reducing maintenance in seawater systems.
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
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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CuNi8 NC012 C71500 The Optimal CuNi Alloy for Marine Applications High Strength and Durable Corrosion Resistance Performance

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

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

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

2. Heat Exchangers and Condensers:

3. Electrical Applications:

4. Coinage:

5. Architectural Applications:

6. Chemical and Petrochemical Industries:

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