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Electric Resistance Wire

Electric Resistance Wire
Electric Resistance Wire
Product Code : 10
Brand Name : LONGMETAL
Product Description

Electric Resistance/Heating Wire



This type of alloy wire has higher electrical resistance coefficient than other materials, better anti-corrosion and anti friction properties, this group of products are suitable for producing electric heating components and common electrical resistance components.
Size range: 0.03mm-1.0mm

Main characteristics of Nichrome electric heating wiresAlloy Nomenclature
Performance

Cr20Ni80

Cr30Ni70

Cr15Ni60

Cr20Ni35

Cr20Ni30

Main
Chemical
composition

Ni

Rest

Rest

55.0-61.0

34.0-37.0

30.0-34.0

Cr

20.0-23.0

28.0-31.0

15.0-18.0

18.0-21.0

18.0-21.0

Fe

≤1.0

≤1.0

Rest

Rest

Rest

Max. continuous service temp. of element

1200

1250

1150

1100

1100

Resistivity at 20ºC (μΩ·m)

1.09

1.18

1.12

1.0

1.04

Density (g/cm3)

8.40

8.10

8.20

7.90

7.90

Thermal conductivity(KJ/m·h·ºC)

60.3

45.2

45.2

43.8

43.8

Coefficient of lines expansion(α×10-6/ºC)

18.0

17.0

17.0

19.0

19.0

Melting point (approx.)( ºC)

1400

1380

1390

1390

1390

Elongation at rupture (%)

>20

>20

>20

>20

>20

Micrographic structure

austenite

austenite

austenite

austenite

austenite

Magnetic properties

nonmagnetic

nonmagnetic

Weak magnetic

Weak magnetic

Weak magnetic


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