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Nichrome Ni80Cr20 Flat wire with good anti-oxidation property

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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.

1.About Nichrome wire
Nichrome alloy includes pure nickel, NiCr alloy, Fe-Cr-Al alloy and copper nickel alloy.
Nickel chrome alloys: Ni80Cr20, Ni70Cr30, Ni60Cr15, Ni35Cr20, Ni30Cr20, Cr25Ni20, pure nickel Ni200 and Ni201
FeCrAl alloy: 0Cr25Al5, 0Cr23Al5, 0Cr21Al4, 0Cr27Al7Mo2, 0Cr21Al6Nb, 0Cr21Al6.
Copper nickel alloy: CuNi1, CuNi2, CuNi6, CuNi8, CuNi10, CuNi23, CuNi30, CuNi44, Constantan,CuMn12Ni
Our Nichrome alloy are in the form of wire, coil, ribbon, strip, foil
size:Wire: 0.018mm-10mm     Ribbon: 0.05*0.2mm-2.0*6.0mm     Strip: 0.5*5.0mm-5.0*250mm   Bar: 10-100mm

2.Grades and properties

The description of products

1) The chemical composition:

Brand Chemical composition Si Cr Ni Al Fe
C P S Mn
Not more than
Cr20Ni80 0.08 0.020 0.015 0.60 0.75-1.60 20.0-23.0 remain ≤0.50 ≤1.0
Cr15Ni60 0.08 0.020 0.015 0.60 0.75-1.60 15.0-18.0 55.0-61.0 ≤0.50 remain
Cr20Ni35 0.08 0.020 0.015 1.00 1.00-3.00 18.0-21.0 34.0-37.0 - remain
Cr20Ni30 0.08 0.020 0.015 1.00 1.00-2.00 18.0-21.0 30.0-34.0 - remain

2) Size and Tolerances

Diameter 0.030-0.50 >0.050-0.100 >0.100-0.300 >0.300-0.500 >0.50-1.00 >1.00-3.00 EXECUTIVE
STRANDARD
Tolerance ±0.005 ±0.007 ±0.010 ±0.015 ±0.02 ±0.03 GB/T1234-1995

When the product is at “M” status, should be followed the standard GB/T1234-1995
Resistivity:

Brand Cr20Ni80 Cr20Ni60 Cr20Ni35 Cr20Ni30
Diameter mm <0.50 0.50-3.0 <0.50 ≥0.50 <0.50 ≥0.50
resistivity(20°C)uΩ·m 1.09±0.05 1.13±0.05 1.12±0.05 1.15±0.05 1.04±0.05 1.06±0.05

 Main Advantage and Application

1. Nickel-chromium, nickel-chromium alloy with high and stable resistance, corrosion resistance, surface oxidation resistance is good, a better under high temperature and seismic strength, good ductility, good workability and weldability.
2.Our Products widely apply to chemical industry, metallurgy mechanism, glass industry, ceramic industry, home appliance area and so on.


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