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Resistance Heating Wire

The Resistance Heating wire offers large electric resistance that increases significantly if temperature increases since it has large temperature coefficient of electric resistivity.

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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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