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Cr20Ni80 Nickel Chromium Heating Strip High Temperature
Cr20Ni80 Nickel Chromium Heating Strip (also known as Nichrome 80/20 strip) is a high-performance resistance heating alloy designed for demanding high-temperature environments. Composed of approximately 80% nickel and 20% chromium, this nichrome heating strip delivers outstanding electrical resistivity, rapid heat generation, and long-term stability under thermal cycling.
- Overview
- Specification
- Applications
- FAQs
- Recommended Products
- Exceptional High-Temperature Resistance: Operates reliably up to 1200°C with outstanding oxidation resistance thanks to the adherent chromium oxide layer.
- Stable Electrical Resistivity: Consistent performance across a wide temperature range, ideal for precision nichrome resistance heating elements.
- Superior Durability and Formability: Excellent cold deformation plasticity, weldability, and resistance to brittle fracture after prolonged use.
- High Mechanical Strength: Maintains structural integrity under thermal cycling and mechanical stress in hot conditions.
Overview of Cr20Ni80 Nickel Chromium Heating Strip:
Our Cr20Ni80 nichrome heating strip is engineered for superior performance in resistance heating applications. With a high melting point of ~1400°C and maximum continuous operating temperature of 1200°C, this nickel chromium alloy strip provides consistent resistivity (approx. 1.09–1.14 μΩ·m) and excellent mechanical strength at high temperatures. Available in various thicknesses and widths, it serves as a reliable solution for custom heating elements, industrial ovens, and thermal processing equipment.
Features of Cr20Ni80 Nickel Chromium Heating Strip:
| 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 Nickel Chromium Heating Strip:
The Cr20Ni80 nickel chromium heating strip is widely used across industries requiring reliable high-temperature heat generation:
- Industrial Furnaces and Kilns: Heating elements for high-temperature processing and heat treatment.
- Electric Ovens, Toasters, and Household Appliances: Durable nichrome strips for consistent performance in consumer heating devices.
- Hot Wire Cutters and Foam Cutting: Precision thermal cutting tools.
- Laboratory and Scientific Equipment: Controlled heating in analytical instruments and test setups.
- Space Heaters, Heat Guns, and Tubular Elements: Efficient resistive heating solutions.
- Aerospace, Automotive, and Metal Processing: De-icing, extrusion, and specialized thermal applications.
FAQ on Cr20Ni80 Nickel Chromium Heating Strip:
Q: What is the maximum operating temperature of Cr20Ni80 nichrome heating strip?
A: It supports continuous operation up to 1200°C in air with excellent oxidation resistance.
Q: How does Cr20Ni80 compare to other resistance alloys?
A: Cr20Ni80 offers better high-temperature stability and longer service life than many iron-chromium-aluminum (FeCrAl) alternatives in oxidizing environments.
Q: Can the nichrome strip be custom cut or formed?
A: Yes, it has good cold deformation plasticity and weldability, making it suitable for custom heating element fabrication.
Q: What are the typical resistivity and density values?
A: Electrical resistivity is approximately 1.09 μΩ·m at 20°C; density is about 8.4 g/cm³.
