Performance Of Copper-Nickel Resistance Alloys

All Products

FeCrAl Alloy (160)

Nickel Strip (40)

Bimetallic Strip (31)

Copper Based Alloys (238)

Insulated Resistance Wire (85)

Nichrome Alloy (236)

Precision Alloys (76)

High Temp Alloys (118)

Pure Metals (73)

Thermal Spray Wire (39)

Bare Thermocouple Wire (92)

Thermocouple Cable (291)

Transformer Core Material (20)

Soft Magnetic Alloys (30)

Low Expansion Alloys (27)

Metal Wire Mesh (9)

I'm Online Chat Now

Certification

I search for Nichrome plate long time, and successfully bought it from Ohmalloy material. OHMALLOY provide real good service in alloy service and can always help me in finding the correct resistance alloy.

—— Mike Harness

OHMALLOY can provie me only 1kg Kovar alloy wire 1.0mm with short time, that is really amazing. Thanks

—— Janey

Really professional in thermocouple wire and cable, what i want just can get from OHMALLOY

—— Chris

Enamelled Constantan 0.08mm, i never expect to get only 2kg of it. But OHMALLOY supply it to me with good quality. God Jesus! Such a reliable supplier from china

—— Aaron

Company News

Performance Of Copper-Nickel Resistance Alloys

Medium Temperature Resistance alloys

Research on the Product Diversification and Performance of Copper-Nickel Resistance Alloys

Resistance is one of the three major passive components (resistance, inductance, and capacitance).

For many years, we have been committed to providing various precision resistance alloy materials (constantan alloy /constantan), which are used in the entire series of wound resistors.

Due to the wide variety of alloy types we can offer, our online products have a broad range of resistivity options to choose from. We can select an alloy based on the wire diameter and resistance required by customers to meet their needs.

In addition, for the application of medium-temperature range heating devices, such as: floor heating, seat heating, electric blankets and industrial heating jackets... Wait, we recommend that you use our full range of copper-nickel alloys.

Nickel white copper is also our main product (DIN CuNi18Zn80/JIS C7521/CDA C75200).

We can also provide KARMA WIRE with high resistance and low temperature coefficient.

All resistance alloy wires can be made into stranded wires or bundled wires according to the customer's own parameters.

Ohmalloy Material Co.,Ltd is a high-tech enterprise which specialized in produce all kinds of resistance alloy in form of wire and strip. Such as high resistance alloy (NiCr,FeCrAl), low-resistance copper nickel alloy (Constantan,manganin,CuNi) ,precision alloy (Kovar,Invar,Karma Permalloy),Thermocouple alloy (Type K,T,E,J,T) High temperature alloy (Inconel,Incoloy,Hastelloy).

The following are the various types of precision resistance alloy wires that we can provide

Alloy	Normal Resistivity at 20℃ Ohm mm²/m	Max Working temperature℃	Melting point℃	Specific heat at 20℃ J/Kg K	Density g/cm³	Coefficient of linear expansion per℃ X 10^-6 20-250℃
Monel	0.54	200-250	1350	430	8.83	13.9
Karma	1.33	200-250	1400	440	8.10	13.3
Nickel Silver	0.29	150-200	1140	377	8.71	17.7
Constantan(CN49)	0.49	200-250	1250	419	8.90	17.5
CuNi(CN30)	0.30	175-225	1180	377	8.90	16.3
CuNi(CN20)	0.20	150-220	1140	377	8.90	16.8
CuNi(CN15)	0.15	150-220	1125	377	8.90	17.1
CuNi(CN10)	0.10	150-200	1100	377	8.90	17.5
CuNi(CN5)	0.05	150	1090	377	8.90	18.0
CuSn 95/5	0.10	150	1050	377	8.85	18.0
CuZn 90/10	0.04	150	1020	377	8.80	18.4
CuZn 85/15	0.05	150	990	377	8.75	18.7
CuZn 70/30	0.07	150	915	377	8.53	19.9
CuZn 60/40	0.08	150	900	377	8.39	20.8

Medium Temperature Resistance Wires (Constantan Alloy). (Unit:Ω/m)

Diam.Wire(mm)	CN 49 W	CN 30 W	CN 15 W	CN 10 W	CN 5 W
0.10 Φ	62.389	38.197	19.099	12.732	6.366
0.11 Φ	51.561	31.568	15.784	10.523	5.261
0.12 Φ	43.326	26.526	13.263	8.842	4.421
0.13 Φ	36.916	22.602	11.301	7.534	3.767
0.14 Φ	31.831	19.488	9.744	6.496	3.248
0.15 Φ	27.728	16.977	8.488	5.659	2.829
0.16 Φ	24.371	14.921	7.460	4.974	2.487
0.17 Φ	21.588	13.217	6.609	4.406	2.202
0.18 Φ	19.256	11.789	5.895	3.929	1.965
0.19 Φ	17.282	10.581	5.291	3.527	1.764
0.20 Φ	15.597	9.549	4.775	3.183	1.592
0.21 Φ	14.145	8.660	4.330	2.887	1.443
0.22 Φ	12.890	7.892	3.946	2.631	1.315
0.23 Φ	11.792	7.219	3.609	2.407	1.203
0.24 Φ	10.831	6.632	3.316	2.211	1.105
0.25 Φ	9.982	6.112	3.056	2.037	1.019
0.26 Φ	9.228	5.649	2.825	1.883	0.942
0.27 Φ	8.557	5.239	2.619	1.746	0.873
0.28 Φ	7.957	4.872	2.436	1.624	0.812
0.29 Φ	7.417	4.541	2.271	1.514	0.757
0.30 Φ	6.932	4.244	2.122	1.415	0.707
0.32 Φ	6.093	3.730	1.865	1.243	0.622
0.35 Φ	5.093	3.118	1.559	1.039	0.519
0.40 Φ	3.899	2.387	1.194	0.796	0.398
0.45 Φ	3.081	1.886	0.943	0.629	0.314
0.50 Φ	2.496	1.528	0.764	0.509	0.255
0.55 Φ	2.062	1.263	0.631	0.421	0.210
0.60 Φ	1.733	1.061	0.531	0.354	0.177
0.65 Φ	1.477	0.904	0.452	0.301	0.151
0.70 Φ	1.273	0.779	0.389	0.259	0.129
0.75 Φ	1.109	0.679	0.339	0.226	0.113
0.80 Φ	0.975	0.597	0.298	0.199	0.0995
0.85 Φ	0.864	0.529	0.264	0.176	0.0881
0.90 Φ	0.770	0.472	0.236	0.157	0.0786
0.95 Φ	0.691	0.423	0.212	0.141	0.0705
1.00 Φ	0.624	0.382	0.191	0.127	0.0637
1.12 Φ	0.497	0.305	0.152	0.102	0.0508
1.25 Φ	0.399	0.244	0.122	0.0815	0.0407
1.40 Φ	0.318	0.195	0.0955	0.0650	0.0325
1.60 Φ	0.244	0.147	0.0746	0.0497	0.0249
1.80 Φ	0.193	0.118	0.0589	0.0393	0.0196
2.00 Φ	0.156	0.0955	0.0477	0.0318	0.0159
2.24 Φ	0.124	0.0761	0.0381	0.0254	0.0127
2.50 Φ	0.0998	0.0611	0.0306	0.0204	0.0102
2.80 Φ	0.0796	0.0487	0.0244	0.0162	0.00812
3.15 Φ	0.0629	0.0385	0.0192	0.0128	0.00642
3.55 Φ	0.0495	0.0303	0.0152	0.0101	0.00505