We are the only manufacturing enterprise which gathers electrical heating alloy wire & strip and heating cable in China .
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.
China Grade from chengxin alloy: CuNi1, CuNi2, CuNi6, CuNi8, CuNi10,CuNi14, CuNi19, CuNi22,CuNi23, CuNi30, CuNi34,CuNi40, CuNi44
The most known, CuNi 44 (also called Constantan) presents the advantage of a very low temperature coefficient.
China Grade from chengxin alloy: CuNi1, CuNi2, CuNi6, CuNi8, CuNi10,CuNi14, CuNi19, CuNi22,CuNi23, CuNi30, CuNi34,CuNi40, CuNi44
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Chemical Composition and Main Property of Cu-Ni Low Resistance Alloy |
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|
Properties\Grade |
CuNi1 |
CuNi2 |
CuNi6 |
CuNi8 |
CuMn3 |
CuNi10 |
|
|
Main Chemical Composition |
Ni |
1 |
2 |
6 |
8 |
_ |
10 |
|
Mn |
_ |
_ |
_ |
_ |
3 |
_ |
|
|
Cu |
Bal |
Bal |
Bal |
Bal |
Bal |
Bal |
|
|
Max Continuous Service Temperature(oC) |
200 |
200 |
200 |
250 |
200 |
250 |
|
|
Resisivity at 20oC (Ωmm2/m) |
0.03 |
0.05 |
0.10 |
0.12 |
0.12 |
0.15 |
|
|
Density(g/cm3) |
8.9 |
8.9 |
8.9 |
8.9 |
8.8 |
8.9 |
|
|
Thermal Conductivity(α×10-6/oC) |
<100 |
<120 |
<60 |
<57 |
<38 |
<50 |
|
|
Tensile Strength(Mpa) |
≥210 |
≥220 |
≥250 |
≥270 |
≥290 |
≥290 |
|
|
EMF vs Cu(μV/oC)(0~100oC) |
-8 |
-12 |
-12 |
-22 |
_ |
-25 |
|
|
Approximate Melting Point( oC) |
1085 |
1090 |
1095 |
1097 |
1050 |
1100 |
|
|
Micrographic Structure |
austenite |
austenite |
austenite |
austenite |
austenite |
austenite |
|
|
Magnetic Property |
non |
non |
non |
non |
non |
non |
|
|
|
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|
Properties\Grade |
CuNi14 |
CuNi19 |
CuNi23 |
CuNi30 |
CuNi34 |
CuNi44 |
|
|
Main Chemical Composition |
Ni |
14 |
19 |
23 |
30 |
34 |
44 |
|
Mn |
0.3 |
0.5 |
0.5 |
1.0 |
1.0 |
1.0 |
|
|
Cu |
Bal |
Bal |
Bal |
Bal |
Bal |
Bal |
|
|
Max Continuous Service Temperature(oC) |
300 |
300 |
300 |
350 |
350 |
400 |
|
|
Resisivity at 20oC (Ωmm2/m) |
0.20 |
0.25 |
0.30 |
0.35 |
0.40 |
0.49 |
|
|
Density(g/cm3) |
8.9 |
8.9 |
8.9 |
8.9 |
8.9 |
8.9 |
|
|
Thermal Conductivity(α×10-6/oC) |
<30 |
<25 |
<16 |
<10 |
<0 |
<-6 |
|
|
Tensile Strength(Mpa) |
≥310 |
≥340 |
≥350 |
≥400 |
≥400 |
≥420 |
|
|
EMF vs Cu(μV/oC)(0~100oC) |
-28 |
-32 |
-34 |
-37 |
-39 |
-43 |
|
|
Approximate Melting Point( oC) |
1115 |
1135 |
1150 |
1170 |
1180 |
1280 |
|
|
Micrographic Structure |
austenite |
austenite |
austenite |
austenite |
austenite |
austenite |
|
|
Magnetic Property |
non |
non |
non |
non |
non |
non | |
Packing: Spool, carton, wooden case or pallet: Coil, waterproof paper
Jingyin chengxin alloy material co,.ltd is specialized in producing high / low resistance electric heating alloy in the form of wire,strip,bar,coil, including Ni-Cr-Fe, Ni-Cr,Cu-Ni,Manganin,Pure Nickel,Kama,Thermistor & Thermocouple compensation alloy wire .
Top quality and available price