Nickel Chrome Alloy Ni80cr20 Ni70cr30 Ni60cr15 Ni35cr20 Heating Elements Resistance Nichrome Strip
Nickel Chrome Alloy Ni80cr20 Ni70cr30 Ni60cr15 Ni35cr20 Heating Elements Spiral Wire Resistance Nichrome Strip
Cr20Ni80 has excellent comprehensive properties. High-quality heating elements will choose Cr20Ni80. Cr20Ni80 has the advantages of good oxygen resistance, high strength, non-magnetic, high emissivity, good corrosion resistance, no softening, no deformation, and low permanent elongation.
Nickel-chromium, nickel, ferrochrome alloy wire with electric high temperature oxidation resistance, high strength, not soften and a series of advantages. When used in a long time, the same type and the permanent elongation is very small, which is more Cr10Ni90 alloy with excellent comprehensive properties, is to produce high-quality varieties of choice for electric components.
Typical Mechanical properties(1.0mm)
- Elongation: 30%
- Yield Strength: 420Mpa
- Tensile Strength: 810Mpa
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Performance material
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Cr10Ni90
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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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Composition
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Ni
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90
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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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10
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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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|
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Maximum temperatureºC
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1300
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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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Meltiing point ºC
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1400
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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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Density g/cm3
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8.7
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8.4
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8.1
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8.2
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7.9
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7.9
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Resistivity at 20ºC((μΩ·m)
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1.09±0.05
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1.18±0.05
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1.12±0.05
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1.00±0.05
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1.04±0.05
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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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≥20
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Specific heat
J/g.ºC
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0.44
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0.461
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0.494
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0.5
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0.5
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Thermal conductivity
KJ/m.hºC
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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
a×10-6/
(20~1000ºC)
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18
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17
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17
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19
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19
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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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|
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Magnetic properties
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Non-magnetic
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Non-magnetic
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Non-magnetic
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Weak magnetic
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Weak magnetic
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Main advantage and application
It widely used in surtur and sulfide environment and producing industrial electric
furnace, household electrical appliance and far infrared ray device.
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