Nickel-chromium wire can be divided into round nickel-chromium wire, flat nickel-chromium wire, and so on according to cross-sectional shape.
Nickel-chromium wire grades include:Cr20Ni80, Cr15Ni60,Cr20Ni35, Cr20Ni30.
Nickel-chromium wire and iron-chromium-aluminum wire are both referred to as heating wires since they are both electrically resistive alloys used as heating elements or heat-generating elements.;Also known as resistive wire, commonly used as a resistive element.
Nickel-chromium wire boasts high resistivity, excellent surface oxidation resistance, high temperature ratings, and maintains high strength at elevated temperatures. It also exhibits good workability and weldability, making it widely applicable as heating elements in metallurgy, household appliances, and the mechanical manufacturing industry, as well as for resistive materials in the electrical industry. It has a long service life but is priced higher due to its nickel content.
The characteristics of nichrome furnace wire are:
1High strength under high temperatures.
2After long-term use and cooling down, the material does not become brittle.
3Nickel-boron alloy, after full oxidation, has a higher refractive index than iron-chromium-aluminum alloy.
4Non-magnetic
5Excellent corrosion resistance, except under desulfurization atmosphere.
Applications of various electric heating alloys include electric furnaces, soldering irons, electric irons, electric heating tubes, and other electric heating elements.
Technical specifications of various electric heating alloys:
Performance/Brand Number | Cr20Ni80 | Cr30Ni70 | Cr15Ni60 | Cr20Ni35 | Cr20Ni30 |
Primary Chemical Composition %Ni | Surplus | Surplus | 55.0-61.0 | 34.0-37.0 | 30.0-34.0 |
Cr | 20.0-23.0 | 28.0-31.0 | 15.0-18.0 | 18.0-21.0 | 18.0-21.0 |
Fe | ≤1.0 | ≤1.0 | Surplus | Surplus | Surplus |
Maximum Operating Temperature of Component (°C) | 1200 | 1250 | 1150 | 1100 | 1100 |
Thermal Conductivity (KJ/m·h·℃) | 60.3 | 45.2 | 45.2 | 43.8 | 43.8 |
