Nichrome resistance wire
China [CN] |
Main characteristics of Nichrome electric heating wires
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Alloy Nomenclature Performance
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Cr20Ni80
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Cr30Ni70
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Cr15Ni60
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Cr20Ni35
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Cr20Ni30
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MainChemicalcomposition
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Ni
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Rest
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Rest
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55.0-61.0
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34.0-37.0
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30.0-34.0
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Cr
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20.0-23.0
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28.0-31.0
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15.0-18.0
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18.0-21.0
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18.0-21.0
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Fe
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≤1.0
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≤1.0
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Rest
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Rest
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Rest
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Max. continuous service temp. of element
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1200
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1250
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1150
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1100
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1100
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Resistivity at 20ºC (μΩ·m)
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1.09
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1.18
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1.12
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1.0
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1.04
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Density (g/cm3)
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8.40
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8.10
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8.20
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7.90
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7.90
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Thermal conductivity(KJ/m·h·ºC)
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60.3
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45.2
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45.2
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43.8
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43.8
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Coefficient of lines expansion(α×10-6/ºC)
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18.0
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17.0
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17.0
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19.0
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19.0
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Melting point (approx.)( ºC)
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1400
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1380
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1390
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1390
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1390
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Elongation at rupture (%)
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>20
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>20
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>20
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>20
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>20
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Micrographic structure
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austenite
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austenite
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austenite
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austenite
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austenite
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Magnetic properties
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nonmagnetic
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nonmagnetic
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Weak magnetic
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Weak magnetic
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Weak magnetic
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