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CuNi30 / CuNi34 Copper Based Alloys , Copper Nickel Wire For Low Voltage Apparatus

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China Ohmalloy Material Co.,Ltd certification
China Ohmalloy Material Co.,Ltd certification
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—— Mike Harness

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—— Aaron

CuNi30 / CuNi34 Copper Based Alloys , Copper Nickel Wire For Low Voltage Apparatus


Large Image :  CuNi30 / CuNi34 Copper Based Alloys , Copper Nickel Wire For Low Voltage Apparatus Get Best Price

Product Details:
Place of Origin: China(Shanghai)
Brand Name: OHMALLOY
Certification: SGS,CE,ISO
Model Number: CN6R03X06B
Payment & Shipping Terms:
Minimum Order Quantity: 5
Price: negotiable
Packaging Details: Plastic packing inside, wooden box outside , choose the suitable packing, Alos it can be customized by the clients' demand.
Payment Terms: , T/T, L/C
Supply Ability: 80000Kg/Week
Detailed Product Description
Resistivity(μΩ.m): 0.3 Shape: Wire
Working Temperature: 220℃ Application: Resistance Rheostat
Tensile Strength: 250Mpa Density (g/cm3): 8.9
Common Name:: CuNi30,NC35.Cu70Ni30
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copper alloys


copper nickel alloy

CuNi30 / CuNi34 Copper Based Alloys , Copper Nickel Wire For Low Voltage Apparatus


OhmAlloy35(Resistance heating wire and resistance wire)
(Common Name:CuNi30,NC35.Cu70Ni30)


OhmAlloy35 is a copper-nickel alloy (Cu70Ni30 alloy) with low resistivity for use at temperatures up to 350°C.


OhmAlloy35 is kind of low resistance heating alloy.It is one of the key materials of the low-voltage electrical products. It is widely used in low-voltage circuit breaker, electric blankets.thermal overload relay, and other low-voltage electrical product.


OhmAlloy35 is typically used for low-temperature applications such as heating cables.


Normal composition%

Nickel 30 Manganese 0.5
Copper Bal.    


Typical Mechanical properties(1.0mm)

Yield strength Tensile Strength Elongation
Mpa Mpa %
200 400 25


Typical Physical properties

Density (g/cm3) 8.9
Electrical resistivity at 20℃ (Ωmm2/m) 0.35
Temperature factor of resistivity(20℃~600℃)X10-5/℃ <10
Conductivity coefficient at 20℃ (WmK) 27
EMF vs Cu(μV/℃ )(0~100℃ ) -37



Coefficient of thermal expansion
Temperature Thermal Expansion x10-6/K
20 ℃- 400℃ 17


Specific heat capacity
Temperature 20℃
J/gK 0.390


Melting point (℃) 1170
Max continuous operating temperature in air (℃) 350
Magnetic properties non-magnetic


Corrosion resistance performance

Alloys Working In atmosphere at 20℃ Working at max temperature 200℃

Air and oxygen contain


gases with Nitrogen

gases with sulfur


gases with sulfur


OhmAlloy35 good good good good bad good


Style of supply

Alloys Name Type Dimension
OhmAlloy35W Wire D=0.06mm~8mm
OhmAlloy35R Ribbon W=0.4~40 T=0.05~2.9mm
OhmAlloy35S Strip W=8~200mm T=0.1~3.0
OhmAlloy35F Foil W=6~120mm T=0.005~0.1
OhmAlloy35B Bar Dia=8~100mm L=50~1000


CuNi series:

Type Electrical
Coefficient of Resistance(10-6/℃)
Density(g/m³) Max.
CuNi1 0.03 <1000 8.9 / 1085
CuNi2 0.05 <1200 8.9 200 1090
CuNi6 0.10 <600 8.9 220 1095
CuNi8 0.12 <570 8.9 250 1097
CuNi10 0.15 <500 8.9 250 1100
CuNi14 0.20 <380 8.9 300 1115
CuNi19 0.25 <250 8.9 300 1135
CuNi23 0.30 <160 8.9 300 1150
CuNi30 0.35 <100 8.9 350 1170
CuNi34 0.40 -0 8.9 350 1180
CuNi40 0.48 ±40 8.9 400 1280
CuNi44 0.49 <-6 8.9 400



CuNi30 / CuNi34 Copper Based Alloys , Copper Nickel Wire For Low Voltage Apparatus 0

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Ohmalloy Material Co.,Ltd

Contact Person: Matt

Tel: +8615900413548

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