The Resistance Heating wire offers large electric resistance that increases significantly if temperature increases since it has large temperature coefficient of electric resistivity. The common applications of resistance heating wire include manufacturing powerful electric resistors and heating apparatus. The main purpose of resistance wire is to generate enormous heat when it is heated enormously.
The Resistance Heating wire is a hard, dense material. It causes superior resistant to oxidation and many corrosive conditions at the high temperatures. It creates protective layer when heated at the high scale. The wire also introduces high performance temperature limit, prolonged service life and large stress capability.
Wire Specification
|
Wire Diameter |
0.05mm to 10.0 mm |
Physical Properties of Resistance Heating Wire:
|
Grade |
Cr20Ni80 |
Cr30Ni70 |
Cr15Ni60 |
Cr20Ni35 |
Cr20Ni30 |
|
|
Major chemical composition % |
Ni |
Balance |
Balance |
55.061.0 |
34.037.0 |
30.034.0 |
|
Cr |
20.023.0 |
28.031.0 |
15.018.0 |
18.021.0 |
18.021.0 |
|
|
Fe |
=1.0 |
=1.0 |
Balance |
Balance |
Balance |
|
|
Components maximum use temperature |
1200 |
1250 |
1150 |
1100 |
1100 |
|
|
Melting point |
1400 |
1380 |
1390 |
1390 |
1390 |
|
|
Density g/cm3 |
8.40 |
8.10 |
8.20 |
7.90 |
7.90 |
|
|
Resistivity,20 |
1.09-0.05 |
1.18-0.05 |
1.11-0.05 |
1.04-0.05 |
1.04-0.05 |
|
|
Extension rate% |
=20 |
=20 |
=20 |
=20 |
=20 |
|
|
specific heat J/g. |
0.440 |
0.461 |
0.494 |
0.500 |
0.500 |
|
|
Heat conduction coefficient KJ/m.h |
60.3 |
45.2 |
45.2 |
43.8 |
43.8 |
|
|
Linear expansion coefficient |
18.0 |
17.0 |
17.0 |
19.0 |
19.0 |
|
Applications of Resistance Heating Wire
1. Electric oven and toaster
2. Powerful resistor
3. Electric heater and commercial furnaces
4. Wires, lead wire in lamps, electronic tubes and filaments
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