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Cr20Ni80 Nichrome Heating Wire 80/20 Nickel Chromium Resistance Wire
Discover premium Cr20Ni80 Nichrome Heating Wire (80/20 nickel chromium resistance wire), the industry-standard alloy for reliable high-temperature performance. Engineered for superior oxidation resistance, stable resistivity, and long service life, this nichrome resistance heating wire excels in electric furnaces, kilns, toasters, and industrial heating applications up to 1200°C (2192°F). Perfect for custom heating elements and resistance coils.
- Overview
- Specification
- Applications
- FAQs
- Recommended Products
Overview of Cr20Ni80 Nichrome Heating Wire 80/20 :
Our Cr20Ni80 Nichrome 80/20 wire is a high-performance nickel-chromium alloy (approximately 80% nickel and 20% chromium) designed specifically as a resistance heating element. This nichrome heating wire offers exceptional electrical resistivity, rapid heat generation, and outstanding durability in extreme thermal environments.
Unlike standard wires, this nickel chromium resistance wire forms a protective chromium oxide layer when heated, providing excellent oxidation and corrosion resistance even at continuous operating temperatures up to 1200°C. Its stable resistance properties across wide temperature ranges make it the preferred choice for precision heating elements, industrial furnaces, and household appliances.
Available in various gauges (diameters) and spool lengths, this high-temperature resistance wire ensures efficient energy conversion, minimal maintenance, and extended lifespan for your heating projects.
Features of 80/20 Nickel Chromium Resistance Wire:
✔High-Temperature Resistance and Oxidation Protection
The Cr20Ni80 nichrome heating wire withstands continuous operation up to 1200°C (2192°F) with a melting point around 1400°C. Its chromium content creates a self-protecting oxide layer, preventing rapid degradation in air.
✔Stable Electrical Resistivity for Efficient Heating Elements
Engineered for consistent resistance across temperature fluctuations, this 80/20 nickel chromium resistance wire delivers reliable heat output. High resistivity allows compact coil designs while minimizing power consumption in resistance heating applications.
✔Superior Corrosion and Oxidation Resistance
Ideal for harsh environments, the nichrome resistance heating alloy resists corrosion and maintains structural integrity, outperforming many alternatives in high-heat, oxidative conditions.
✔Excellent Ductility and Formability
Easily wound into coils, spirals, or custom shapes for heating elements without cracking. Non-magnetic properties suit sensitive electronic or medical applications.
| Performance material | Cr10Ni90 | Cr20Ni80 | Cr30Ni70 | Cr15Ni60 | Cr20Ni35 | Cr20Ni30 | |
|---|---|---|---|---|---|---|---|
| composition | Ni | 90 | Rest | Rest | 55.0～61.0 | 34.0～37.0 | 30.0～34.0 |
| Cr | 10 | 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 | Rest | Rest | Rest | |
| Maximum temperature℃ | 1300 | 1200 | 1250 | 1150 | 1100 | 1100 | |
| Meltiing point ℃ | 1400 | 1400 | 1380 | 1390 | 1390 | 1390 | |
| Density(g/cm3) | 8.7 | 8.4 | 8.1 | 8.2 | 7.9 | 7.9 | |
| Resistivity | -- | 1.09±0.05 | 1.18±0.05 | 1.12±0.05 | 1.00±0.05 | 1.04±0.05 | |
| Elongation at rupture | ≥20 | ≥20 | ≥20 | ≥20 | ≥20 | ≥20 | |
| Specific heat J/g.℃ | -- | 0.44 | 0.461 | 0.494 | 0.5 | 0.5 | |
| Thermal conductivity KJ/m.h℃ | -- | 60.3 | 45.2 | 45.2 | 43.8 | 43.8 | |
| Coefficient of lines expansion | -- | 18 | 17 | 17 | 19 | 19 | |
| Micrographic structure | -- | Austenite | Austenite | Austenite | Austenite | Austenite | |
| Magnetic properties | -- | Nonmagnetic | Nonmagnetic | Nonmagnetic | Nonmagnetic | Nonmagnetic |
Applications of Cr20Ni80 Nichrome Heating Wire 80/20 :
Versatile Uses of Cr20Ni80 Nichrome Heating Wire in Industrial and Domestic Settings
- Industrial Heating Elements: Electric furnaces, kilns, heat treating ovens, and wire mesh conveyor belts.
- Household Appliances: Toasters, hair dryers, electric heaters, ovens, and radiant heating systems.
- Laboratory and Scientific Equipment: High-precision resistors, hot wire cutters, and thermal testing devices.
- 3D Printing and Hobby Applications: Heated beds, hot ends, and custom foam cutters.
- Other Resistance Heating Solutions: Soldering irons, plastic molding dies, control resistors, and pyrotechnic devices.
This nickel chromium resistance wire is the go-to material for any project requiring reliable, high-temperature heat generation.
FAQ on 80/20 Nickel Chromium Resistance Wire:
1.What is Cr20Ni80 Nichrome Heating Wire?
Cr20Ni80 (also called Nichrome 80/20) is an 80% nickel, 20% chromium alloy resistance wire prized for its high resistivity and ability to operate at elevated temperatures while resisting oxidation.
2.What is the maximum operating temperature for this nichrome wire?
It supports continuous use up to 1200°C (2192°F), with short-term tolerance near its melting point of ~1400°C.
3.How does nichrome 80/20 compare to other resistance wires?
It offers better oxidation resistance and stable resistivity than many alternatives (e.g., Kanthal in certain lower-temp ranges), making it ideal for rapid heating and long life in air-exposed elements.
4.Can I use this wire for DIY heating elements or foam cutters?
Yes, it is widely used for custom coils, hot wire cutters, and 3D printer components due to its formability and consistent performance.
5.Does the resistance of nichrome wire change with temperature?
It has a low temperature coefficient, so resistance remains relatively stable, ensuring predictable heating behavior.
6.What gauge (diameter) should I choose?
Thinner gauges (higher AWG) suit low-power/precision needs; thicker gauges handle higher currents and power. Calculate based on required resistance and wattage.
