Gold Member Since 2012
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Hangzhou Ualloy Material Co., Ltd.

CuNi2, Cn5, CuNi2 Wire manufacturer / supplier in China, offering Cupronickel Alloy 230 for Low-Voltage Apparatus CuNi2 Wire, High Quality Fecral 0cr27al7mo2 Resistor Foil/Bright Coil, 0cr21al6 Fecral Alloy Foil/ Heating Resistance Wire and so on.

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Supplier Homepage Product Cupronickel Alloy Cupronickel Alloy 230 for Low-Voltage Apparatus CuNi2 Wire

Cupronickel Alloy 230 for Low-Voltage Apparatus CuNi2 Wire

Purchase Qty.:
10-49 50-99 100+
FOB Unit Price: US $25.4 US $25 US $24.2
Purchase Qty. (KG) FOB Unit Price
10-49 US $25.4
50-99 US $25
100+ US $24.2
Get Latest Price
Production Capacity: 50t/Month
Transport Package: Coil (Plastic Spool) + Carton + Pallet
Payment Terms: L/C, T/T, Paypal, Western Union
Basic Info
  • Model NO.: CuNi2
  • Material: CuNi
  • Diameter: 0.04mm~8mm
  • Max Continuous Service Temp: 200 Oc
  • Density: 8.9 g/cm3
  • Melting Point: 1090 Oc
  • Elongation: Min 25%
  • Trademark: Ualloy
  • Origin: China
  • Product Type: Wire
  • Carbon Content: Low Carbon
  • Status: Bright
  • Resistivity at 20oc: 0.05 ± 10% Ohm*mm2/M
  • Temperature Coefficient of Resistance: < 120 ×10-6/Oc
  • Tensile Strength: Min 220 MPa
  • Micrographic Structure: Austenite
  • Specification: GB/T 6145-1999
  • HS Code: 74082200
Product Description
Copper Nickel Alloys

Model No.: CuNi2

Those are alloys of chemical composition copper + nickel with addition of manganese with a low resistivity (from 231.5 to 23.6 Ohm. Mm2/ft).

The most known, CuNi 44 (also called Constantan) presents the advantage of a very low temperature coefficient.

Their advantages are the following:

Very good resistance to corrosion
Very good malleability
Very good solderability
Chemical Composition and Main Property of Cu-Ni Low Resistance Alloy
Main Chemical CompositionNi1268_10
Max Continuous Service Temperature(ºC)200200200250200250
Resisivity at 20ºC  (μΩ·m)
Thermal Conductivity(α × 10-6ºC)< 100< 120< 60< 57< 38< 50
Tensile Strength(Mpa)≥ 210≥ 220≥ 250≥ 270≥ 290≥ 290
EMF vs Cu(μV/ºC)(0~1000ºC)-8-12-12-22_-25
Approximate Melting Point(ºC)108510901095109710501100
Micrographic Structureausteniteausteniteausteniteausteniteausteniteaustenite
Magnetic Propertynonnonnonnonnonnon

Main Chemical CompositionNi141923303444
Max Continuous Service Temperature(ºC)300300300350350400
Resisivity at 20ºC  (μΩ·m)
Thermal Conductivity(α × 10-6ºC)< 30< 25< 16< 10< 0< -6
Tensile Strength(Mpa)≥ 310≥ 340≥ 350≥ 400≥ 400≥ 420
EMF vs Cu(μV/ºC)(0~1000ºC)-28-32-34-37-39-43
Approximate Melting Point(ºC)111511351150117011801280
Micrographic Structureausteniteausteniteausteniteausteniteausteniteaustenite
Magnetic Propertynonnonnonnonnonnon

Copper Nickel Low Resistance Alloys
1. Description
Cupronickel, also can be called copper nickel alloy, is an alloy of copper, nickel and strengthening impurities, such as iron and manganese.  
       Chemical Content(%)

       Mechanical Properties
Max Continuous Service Temp200 ºC
Resistivity at 20ºC0.05 ± 10% ohm*mm2/m
Density8.9 g/cm3
Temperature Coefficient of Resistance< 120  ×10-6/ºC
EMF VS Cu (0~100ºC)-12 μV/ºC
Melting Point1090 ºC
Tensile StrengthMin 220 Mpa
ElongationMin 25%
Micrographic StructureAustenite
Magnetic PropertyNon.
2. Specification
Wire: Diameter: 0.04mm-8.0mm
Strip: Thickness: 0.01mm-3.0mm
          Width: 0.5mm-120mm

It could be used to make electric heating element in low-voltage apparatus, such as thermal overload relay, low-voltage circuit breaker, and so on.

It has nice corrosion resistance, good malleability and solderability. 
5. Packing detail
 1) Coil (plastic spool) + compressed ply-wooden case + pallet 
 2) Coil (plastic spool) + carton + pallet  
6. Products and services
1). Pass: ISO9001 certification, and SO14001cetification;
2). Fine after-sale services;
3). Small order accepted;
5). Fast delivery;

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