resistance wires and strips coil heating elements
 Danyang Resistance Wire Factory
Industrial Ribbon Elements,Coil Elements and Spiral Heating Elements manufacturer

Constantan wire

Main Characteristics Of Copper-Nickel Low Resistance Heating Wire
Nomenclature
Performance
NC003
CuNi1
NC005
CuNi2
NC010
CuNi6
NC012
CuNi8
MC012
CuMn3
NC015
CuNi10
NC020
CuNi14
NC025
CuNi19
NC030
CuNi23
NC035
CuNi30
NC040
CuNi34
NC050
CuNi44
Main Chemical Composition
(%)
Ni 1 2 6 8 - 10 14.2 19 23 30 34 44
Mn - - - - 3 - 0.3 0.5 0.5 1 1 1
Cu Bal. Bal. Bal. Bal. Bal. Bal. Bal. Bal. Bal. Bal. Bal. Bal.
Max continuous service temp of element(℃)  - 200 220 250 200 250 300 300 300 350 350 400
Melting point
(approx℃)
1085 1090 1095 1097 1050 1100 1115 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 8.9 8.9 8.9
Resistivity at 20℃(μΩ.m)  0.03±10% 0.05±10% 0.1±10% 0.12±10% 0.12±10% 0.15±10% 0.2±5% 0.25±5% 0.3±5% 0.35±5% 0.4±5% 0.50±5%
Tensile strength
( Mpa)
≥210 ≥220 ≥250 ≥270 ≥290 ≥290 ≥310 ≥340 ≥350 ≥400 ≥400 ≥420
Elongation rate
(%,>Φ1.0)
≥25 ≥25 ≥25 ≥25 ≥25 ≥25 ≥25 ≥25 ≥25 ≥25 ≥25 ≥25
TCR 10-5/℃
(20-600℃)
<100 <120 <60 <57 <38 <50 <38 <25 <16 <10 0 <-6