Cr20Ni70 Nichrome Wire Heating Coil 0.025-8mm Diameter with 1200°C Temperature Rating
Cr20Ni70 is a premium nichrome alloy offering exceptional performance characteristics for high-temperature applications. This material provides excellent ductility, workability, and weldability even under extreme thermal and mechanical stress conditions.
- High and stable corrosion resistance for harsh environments
- Outstanding surface oxidation resistance at elevated temperatures
- Excellent coil-forming ability for versatile shaping
- Non-magnetic austenitic structure
- Maximum operating temperature of 1200°C
- Melting point of 1400°C
| 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 |
| Composition Cr | 10 | 20.0~23.0 | 28.0~31.0 | 15.0~18.0 | 18.0~21.0 | 18.0~21.0 |
| Composition Fe | ≤1.0 | ≤1.0 | Rest | Rest | ||
| Maximum Temperature °C | 1300 | 1200 | 1250 | 1150 | 1100 | 1100 |
| Melting Point °C | 1400 | 1400 | 1380 | 1390 | 1390 | 1390 |
| Density g/cm³ | 8.7 | 8.4 | 8.1 | 8.2 | 7.9 | 7.9 |
| Resistivity at 20°C (μΩ·m) | 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 |
| Form | Specification |
|---|---|
| Wire | Diameter = 0.025mm ~ 8mm |
| Flat Wire | Width = 0.40 ~ 6.0mm | Thick = 0.03 ~ 0.50mm |
| Strip | Width = 8 ~ 250mm | Thick = 0.05 ~ 3.0mm |
| Bar | Diameter = 8 ~ 100mm | Length = 50 ~ 1000mm |
Diameter 0.03-7.5mm
Diameter 8.0-12.0mm
(0.05-0.35) × (0.5-6.0)mm
(0.50-2.5) × (5-180)mm
Diameter 8-50mm
NiCr 80/20: Suitable for heating elements up to 1200°C, used in electrical cooking equipment and precision resistors.
NiCr 70/30: Ideal for industrial furnaces up to 1230°C with alternating atmospheres, offering excellent corrosion resistance.
NiCr 60/15: Designed for electrically heated equipment up to 1150°C, including high resistance and potentiometer resistors.
NiCr 30/20: Used for heating elements up to 1050°C in cooking equipment, heating cords, and cables.
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