Resistance Heating Nickel Alloy Cr20ni80 Nichrome Resistance Strip Ni80cr20 Heating Strip From Factory
Resistance Heating Nickel Alloy Cr20ni80 Nichrome Resistance Strip Ni80cr20 Heating Strip From Factory
NiCr80/20
The material NiCr8020 with the material number 2.4869 is applied in the form of strips, sheets, tubes and wires for furnace construction components and heating conductors.
It is a nickel-chromium heating conductor alloy for operating temperatures of up to 1150 °C and often contains additives of rare earths for a higher resistance to oxidation, especially with frequent switching operations or broad temperature variations.
The resistance to atmospheric corrosion at 20 °C is high up to the upper operating temperature the resistance to air and other oxygen-containing gases as well as to nitrogen-containing low-oxygen gases is high as well, yet it is low to oxidizing as well as reducing gases containing sulphur.
The resistance to carbonizing is high. Application for industrial electric furnaces, enamelling furnaces, household appliances, night-current storage space-heaters.
Ni80Cr20
Chemical Content, %
|
C |
P |
S |
Mn |
Si |
Cr |
Ni |
Al |
Fe |
Other |
|
Max |
|||||||||
|
0.08 |
0.02 |
0.015 |
0.60 |
0.75~1.60 |
20.0~23.0 |
Bal. |
Max 0.50 |
Max 1.0 |
- |
Mechanical Properties
|
Max Continuous Service: Resisivity( 20℃)/Ω·m:
Density: Thermal Conductivity: Coefficient of Thermal Expansion: Melting Point: Elongation: Micrographic Structure: Magnetic Property: |
1200℃ 1.09 +/-0.05 (Dia: <0.5mm) 1.13+/-0.05 (Dia: 0.50-3.00 mm) 1.14+/-0.05 (Dia: >3.0mm)
8.4 g/cm3 60.3 KJ/m·h·℃ 18.0 α×10-6/℃ 1400 ℃ Min 20% Austenite nonmagnetic |
|
Type |
Cr20Ni80 |
Cr15Ni60 |
Cr30Ni70 |
Cr20Ni35 |
Cr20Ni30 |
|
|
|
||||||
|
Main chemical composition |
Ni |
Rest |
55.0~61.0 |
Rest |
34.0~37.0 |
30.0~34.0 |
|
Cr |
20.0~23.0 |
15.0~18.0 |
28.0~31.0 |
18.0~21.0 |
18.0~21.0 |
|
|
Fe |
≤1 |
Rest |
≤1 |
Rest |
Rest |
|
|
Maximal Temperature(℃) |
1200 |
1150 |
1250 |
1100 |
1100 |
|
|
Resistance Temperature correction coefficient.(CT) |
1.09±0.05 |
1.11±0.05 |
1.18±0.05 |
1.04±0.05 |
1.06±0.05 |
|
|
Melting point (℃) |
1400 |
1390 |
1380 |
1390 |
1390 |
|
|
Resistivityρ20℃(10-6Ω.m) |
800℃ |
1.008 |
1.078 |
1.028 |
1.188 |
1.173 |
|
1000℃ |
1.014 |
1.095 |
1.033 |
1.219 |
1.201 |
|
|
1200℃ |
1.025 |
|
1.043 |
|
|
|
|
Fast life value |
Tem.(℃) |
1175 |
1100 |
1200 |
1050 |
1050 |
|
hour(h) |
≥110 |
≥100 |
≥110 |
≥100 |
≥100 |
|
|
Specific gravity(g/cm3) |
8.40 |
8.2 |
8.1 |
7.90 |
7.90 |
|
|
Elongation(%) |
≥25 |
≥25 |
≥20 |
≥20 |
≥20 |
|
|
Thermal(kj/m.h.℃) |
60.3 |
45.2 |
45.2 |
43.8 |
43.8 |
|
|
Specific heat(20℃)j/g.℃ |
0.440 |
0.494 |
0.461 |
0.500 |
0.500 |
|
|
Extend strength(20~1000℃)α*10-6℃ |
18.0 |
17.0 |
17.1 |
19.0 |
19.0 |
|
|
Tensile strength(kg/mm2) |
>85 |
>85 |
>85 |
>85 |
>85 |
|
|
Repeatedly bending(F/R) |
>12 |
>12 |
>12 |
>12 |
>12 |
|
|
Microstructure |
Austenitic |
Austenitic |
Austenitic |
Austenitic |
Austenitic |
|
Our Nichrome alloy are in the form of wire, ribbon, strip, coil.
- Round wire
- Ribbon (flat wire)
- Strip / foil
- Stranded wire
- Sheet / plate
Delivery conditions are:
- Bright annealed
- Oxidized
- Pickled
- Enameled
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