Copper-nickel alloy wires

copper-nickel alloys

Copper-nickel alloy resistance wire has high electrical conductivity, which makes it excellent in situations where efficient energy transmission is required. The oxide film formed on the surface of copper-nickel alloys has good oxidation resistance, which can extend the service life of the heating element. Copper-nickel alloys are resistant to many chemicals, allowing them to maintain good performance in various environments.Copper-nickel alloys have good processing properties and can be made into various shapes of heating elements by various processing methods.The resistivity of copper-nickel alloys is low, so the resistance of the resistance wire can be reduced under the same length and cross-sectional area, thereby reducing the heating power and increasing the efficiency.These advantages make copper-nickel resistance wire an important material for heating elements and are widely used in the area of making heating cable, variable resistors, low voltage appliances, machine tool electric appliances, wound resistors etc. The most common alloys are CuNi1, CuNi2, CuNi6, CuMn3, CuNi8, CuNi10, CuNi14, CuNi19, CuNi23, CuNi30, CuNi44, 6J40, 6J11, 6J12, 6J8, 6J13, Monel 400, Monel 500 etc. .

Main properties and characteristics of copper-nickel low resistance electrothermal alloy materials
Alloy Name Properties		NC005 CuNi2	NC010 CuNi6	MC012 CuMn3	NC015 CuNi10	NC025 CuNi19	NC030 CuNi23	NC035 CuNi30	NC040 CuNi34	NC050 CuNi44
Main Components (%)	Ni	2	6	-	10	19	23	30	34	44
	Mn	-	-	3	-	0.5	0.5	1	1	1
	Cu	Bal.	Bal.	Bal.	Bal.	Bal.	Bal.	Bal.	Bal.	Bal.
Maximum operating Temp.(℃)		200	220	200	250	300	300	350	350	400
Melting point (approx℃)		1090	1095	1050	1100	1135	1150	1170	1180	1280
Density (g/cm³)		8.9	8.9	8.9	8.9	8.9	8.9	8.9	8.9	8.9
Resistivity 20℃(μΩ.m)		0.05±10%	0.1±10%	0.12±10%	0.15±10%	0.25±5%	0.3±5%	0.35±5%	0.4±5%	0.50±5%
Tensile strength (Mpa)		≥220	≥250	≥290	≥290	≥340	≥350	≥400	≥400	≥420
Elongation (%,>Φ1.0)		≥25	≥25	≥25	≥25	≥25	≥25	≥25	≥25	≥25
TCR 10^-5/℃ （20-600℃）		<120	<60	<38	<50	<25	<16	<10	0	<-6

Main properties and characteristics of precision resistance alloys
Alloy Name Properties		6J40 Constantan	6J11 New Constantan	6J12 Manganin	6J8 F1 Manganin	6J13 F2 Manganin
Main Chemical Components (%)	Mn	1~2	10.5~12.5	11~13	8~10	11~13
	Ni	39~41	-	2~3	-	2~5
	Cu	Bal.	Bal.	Bal.	Bal.	Bal.
	other		Al：2.5~4.5 Fe：1.0~1.6		Si：1~2
Continuous operating temperature (℃)		5~500	5~500	5~45	10~80	10~80
Density (g/cm³)		8.88	8.0	8.44	8.7	8.4
Resistivity 20℃ (μΩ.m)		0.48±0.03	0.49±0.03	0.47±0.03	0.35±0.05	0.44±0.04
Elongation (%,Φ>0.5,L0=200mm)		≥15	≥15	≥15	≥15	≥15
TCR (α×106C^-1)		-40~+40	-80~+80	-3~+20	-5~+10	0~+40
μv /℃(0～100℃) EMF vs Copper		45	2	1	2	2

Technical parameters of Copper-Nickel low resistance alloy wires
Diameter (mm)	Sectional Area （mm²）	Weight per meter (kg/m)	Length per kg. (m/kg)	Ohm per meter (20ºC Ω/m)
Diameter (mm)	Sectional Area （mm²）	Weight per meter (kg/m)	Length per kg. (m/kg)	CuNi2	CuNi6	CuNi10	CuNi23	CuNi44
0.10	0.00785	0.000069865	14313.32	6.366	12.739	19.108	38.217	62.420
0.12	0.011304	0.000100606	9939.80	4.421	8.846	13.270	26.539	43.347
0.15	0.0176625	0.000157196	6361.47	2.829	5.662	8.493	16.985	27.742
0.17	0.0226865	0.00020191	4952.71	2.203	4.408	6.612	13.224	21.599
0.19	0.0283385	0.000252213	3964.91	1.763	3.529	5.293	10.586	17.291
0.21	0.0346185	0.000308105	3245.65	1.444	2.889	4.333	8.666	14.154
0.25	0.0490625	0.000436656	2290.13	1.019	2.038	3.057	6.115	9.987
0.27	0.0572265	0.000509316	1963.42	0.8733	1.7466	2.621	5.242	8.562
0.29	0.0660185	0.000587565	1701.94	0.7570	1.5140	2.272	4.544	7.422
0.31	0.0754385	0.000671403	1489.42	0.6625	1.3249	1.988	3.977	6.495
0.35	0.0961625	0.000855846	1168.43	0.5197	1.0394	1.560	3.120	5.096
0.40	0.1256	0.00111784	894.58	0.3979	0.7958	1.194	2.389	3.901
0.45	0.1589625	0.001414766	706.83	0.3144	0.6288	0.944	1.887	3.082
0.50	0.19625	0.001746625	572.53	0.2546	0.5093	0.764	1.529	2.497
0.60	0.2826	0.00251514	397.59	0.1892	0.3785	0.531	1.062	1.734
0.70	0.38465	0.003423385	292.11	0.1299	0.2598	0.390	0.780	1.274
0.80	0.5024	0.00447136	223.65	0.0995	0.1989	0.299	0.597	0.975
0.90	0.63585	0.005659065	176.71	0.0786	0.1572	0.236	0.472	0.771
1.00	0.785	0.0069865	143.13	0.0637	0.1273	0.191	0.382	0.624
1.20	1.1304	0.01006056	99.40	0.0442	0.0884	0.133	0.265	0.433
1.40	1.5386	0.01369354	73.03	0.0325	0.0650	0.097	0.195	0.318
1.60	2.0096	0.01788544	55.91	0.0249	0.0497	0.075	0.149	0.244
1.80	2.5434	0.02263626	44.18	0.0196	0.0393	0.059	0.118	0.193
2.00	3.14	0.027946	35.78	0.0159	0.0318	0.048	0.096	0.156
2.20	3.7994	0.03381466	29.57	0.0132	0.0263	0.039	0.079	0.129
2.50	4.90625	0.043665625	22.90	0.0102	0.0204	0.031	0.061	0.100
2.80	6.1544	0.05477416	18.26	0.0081	0.0162	0.024	0.049	0.080
3.00	7.065	0.0628785	15.90	0.0071	0.0141	0.021	0.042	0.069
3.50	9.61625	0.085584625	11.68	0.0052	0.0104	0.016	0.031	0.051
4.00	12.56	0.111784	8.95	0.0040	0.008	0.012	0.024	0.039
4.50	15.89625	0.141476625	7.07	0.0031	0.0063	0.009	0.019	0.031
5.00	19.625	0.1746625	5.73	0.0025	0.0051	0.008	0.015	0.025
5.50	23.74625	0.211341625	4.73	0.0021	0.0042	0.006	0.013	0.021
6.00	28.26	0.251514	3.98	0.0018	0.0035	0.005	0.011	0.017
6.50	33.16625	0.295179625	3.39	0.0015	0.0030	0.005	0.009	0.015
7.00	38.465	0.3423385	2.92	0.0013	0.0026	0.004	0.008	0.013

copper-nickel alloys

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