Usage:
Nickel chromium resistance wire is used for the production of resistance elements for electrical appliances. They are suitable for insulated elements as well as for open elements. They have the temperature resistance to handle industrial furnace applications.

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1. Chemical Composition:
These heating wires are made from alloys with a chemical composition Ni Cr Fe with some additional elements such as silicium (Si) and Manganese (Mn) in order to add heat tolerance.

Alloy variations:
Cr20Ni80, Cr30Ni70, Cr15Ni60, Cr20Ni35, Cr20Ni30, Cr25Ni20

2. Properties:
Their metallurgical structure gives nickel chromium resistance wire very good plasticity, even when cold.

Variations in temperature do not negatively affect the strength of the wire.

In addition to a relatively high specific resistance, Ni-Cr alloys feature all of the necessary properties for good performance in furnaces:
Resistance to oxidation
Low embrittlement at high temperature
Good plasticity - Easier to shape compared to FeCrAl wires (lower mechanical characteristics allow control of elasticity of the product during shaping (coiling, folding, drawing))
Good resistance to creeping (more than ferritic alloys) which is important during high wave resistance.
Maximum temperature recommended in the furnace: 1050 / 1100 °C

3. Typical Applications:
Nickel chromium wires are used for the production of electric resistance components for appliances or for industrial furnaces.

4. Constraints:
These alloy wires are not suitable for use in the presence of sulphurous or chlorinated atmospheres. Sulphur can cause the wire to break at temperatures higher than 650°C

In carbonaceous atmospheres, at some temperatures between 600 and 900 °C, Ni-Cr may be less resistant than Iron-Cr-Al alloys.

Note:
1. Do not store for longer than 6 months.
2. Not to be used in humid environments.

Note: The various grades of electric resistance alloy material are blended with the amount of rare earth, titanium and other trace elements, to improve the processing performance and extend the useful life of the wire.