Cupronickel Alloy 230 for Low-Voltage Apparatus CuNi2 Wire

• Product Type: Wire
• Material: CuNi2
• Carbon Content: Low Carbon
• Surface: Golden
• Condition: Soft 1/4h 1/2h H
• Dimensions: 0.02~6.0mm
• Model NO.: CuNi2
• Resistivity: 0.05 ± 10% Ohm*mm2/M
• Density(g/cm3): 8.9
• Tensile Strength: Min 220 MPa
• Conductor Type: Solid
• Application: Resistance
• Temperature Coefficient of Resistance: < 120 ×10-6
• Elongation: Min 25%
• Transport Package: Carton Box
• Specification: Base on customers′ request
• Trademark: Allotech
• Origin: China
• HS Code: 7408220000
• Production Capacity: 20 Tons Every Month

Product Description

1. Description
Cupronickel, also can be called copper nickel alloy, is an alloy of copper, nickel and strengthening impurities, such as iron and manganese.  

CuNi2
Chemical Content(%) 

Mn	Ni	Cu
	2	Bal.

 
 Mechanical Properties 

Max Continuous Service Temp	200 ºC
Resistivity at 20ºC	0.05 ± 10% ohm*mm2/m
Density	8.9 g/cm3
Temperature Coefficient of Resistance	< 120  ×10-6/ºC
EMF VS Cu (0~100ºC)	-12 μV/ºC
Melting Point	1090 ºC
Tensile Strength	Min 220 Mpa
Elongation	Min 25%
Micrographic Structure	Austenite
Magnetic Property	Non.

 
2. Specification
 Wire: Diameter: 0.04mm-8.0mm
 Strip: Thickness: 0.01mm-3.0mm
          Width: 0.5mm-120mm

3.Usage 
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.

4.Features 
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;

Copper Nickel Alloys

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

Main grades and properties 

Type	Electrical resistivity (20degreeΩ mm²/m)	temperature coefficient of resistance (10^6/degree)	Dens ity g/mm²	Max. temperature (°c)	Melting point (°c)
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	1280