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copper-nickel alloys

CuNi alloy low resistance wires 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 CuNi2, CuNi6, CuNi10, 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

Download

  • Products Catalogue
  • Resistance Calculator
  • Chinese Natinal Standard GB/T1234-2012

Contact Info

  • No.42 Yangzheng East Road, Lvcheng Town, Danyang City Jiangsu Province, China
  • sales@heyiheating.com
  • +86-0511 8605 2233

 

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