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CuNi34 NC040 CuNi Alloy wire with superior thermal conductivity for chemical applications

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CuNi34 NC040 CuNi Alloy wire with superior thermal conductivity for chemical applications

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Brand Name :	Senphus
Model Number :	CuNi34/NC040
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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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CuNi34 NC040 CuNi Alloy wire with superior thermal conductivity for chemical applications

CuNi34 NC040 CuNi Alloy wire with superior thermal conductivity for chemical applications

CuNi34 is a copper-nickel alloy containing 34% nickel. Known for its excellent corrosion resistance, particularly in seawater, it is widely used in marine applications such as shipbuilding, offshore structures, and desalination plants. The alloy resists pitting, biofouling, and stress corrosion cracking, making it ideal for harsh, saline environments.

CuNi34 also offers good mechanical properties, including strength, ductility, and toughness, while maintaining resistance to seawater corrosion. Although its electrical and thermal conductivity is lower than pure copper due to the nickel content, it is still suitable for heat exchangers and other systems exposed to aggressive conditions.

Common applications include pipes, tubes, and marine components, where its durability and long-term resistance to corrosion are critical. CuNi34 is a versatile and reliable material for industries dealing with seawater and corrosive environments, offering both longevity and performance.

Chemical Composition Wt.%	%	Ni	Cu	Mn
	Min
	Max	34	Rest	1

Main physical properties:

Max continuous operating temperature ℃	350
Resistance temperature coefficient x 10^-5/℃(20℃-600℃)	<0
Thermovoltage to copper at 20℃ in μV/K	-39
Thermal expansion coefficient ×10^-6/K(20℃-400℃)	16.0
Thermal conductance at 20℃ W/mK	25
Specific heat capacity at 20℃ J/gK	0.40

Some key features of CuNi34 include:

Corrosion Resistance: The alloy exhibits excellent corrosion resistance, especially in seawater and other chloride-containing environments, making it ideal for marine applications
Low Electrical Resistivity
High-Temperature Performance: With a maximum continuous operating temperature of 350°C, CuNi34 maintains its mechanical properties and corrosion resistance at elevated temperatures
Non-Magnetic: CuNi34 is non-magnetic, which is an advantage in applications where magnetic interference is a concern
Resistant to Biofouling: CuNi34 surfaces are resistant to marine biofouling, reducing the impact of biological growth and associated maintenance costs
Good Processability: The alloy is easy to form and weld, offering high flexibility in manufacturing complex shapes and structures

These features make CuNi34 an alloy of choice for demanding applications where corrosion resistance, mechanical strength, and the ability to withstand harsh environments are critical.

Applications:

Marine Applications: CuNi34 is widely used in marine environments due to its excellent resistance to seawater corrosion. It is used for seawater cooling systems, bilge and ballast systems, sanitary systems, fire fighting systems, inert gas systems, hydraulic and pneumatic systems, and chiller systems in shipbuilding and repair
Desalination Plants: In seawater desalination plants, CuNi34 is used for evaporator tubes and other components, as well as in the form of thin dimpled sheet for water chambers
Offshore Oil and Gas Platforms: Copper-nickel alloys like CuNi34 are used in offshore oil and gas platforms and floating production, storage, and offloading vessels (FPSOs)
Power Generation: CuNi34 pipes and components are utilized in steam turbine condensers, oil coolers, auxiliary cooling systems, and high-pressure pre-heaters at nuclear and fossil fuel power plants
Heat Exchangers and Condensers: Mechanical engineering employs iron-containing Cu-Ni alloys like CuNi34 for heat exchangers, steam condensers, air and oil coolers
Low-Voltage Electrical Products: CuNi34 is used in low-voltage circuit breakers, electric blankets, thermal overload relays, and other low-voltage electrical products due to its low resistivity and suitability for use at temperatures up to 350°C
Antimicrobial Surfaces: CuNi34 alloys have strong antimicrobial properties, making them suitable for use as hygienic "touch materials" to reduce cross-contamination and infections, particularly in hospital intensive care units

These applications highlight the versatility of CuNi34 in industries where corrosion resistance, mechanical strength, and antimicrobial properties are essential.

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
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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