NiCr Alloys (NiCr) are high-performance materials known for their excellent resistance to high temperature oxidation and corrosion and good wear resistance. Composed primarily of nickel (Ni) and chromium (Cr), with trace amounts of iron (Fe) and other elements, NiCr alloys maintain their ductility and good form stability even under extreme heat and thermal cycling conditions. These properties make them widely used in industrial heating applications, aerospace components, and high-temperature electrical resistance wires.
Available grades: Cr10Ni90, Cr20Ni80, Cr30Ni70, Cr15Ni60, Cr20Ni35, Cr20Ni30
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Wire 0.05-7.5
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Rod 8-50
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Flat Wire (0.05-0.35)*(0.5-6.0)
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Strip/Foil (0.5-2.5)*(5-40)
Our production adheres to JIS G4313 standards, ensuring compliance with international quality benchmarks.
Equivalent overseas standards are listed for reference.
- ISO 6208, 15156
- ASTM B163, B166, B167, B168, B446
- DIN 17742, 17750
- AMS 5540, 5666
- GB/T 1234, 2077, 4437
| Grades | |||||||
| Main Chemical Composition (%) | Nickel (Ni) | 90 | Rest | Rest | 55.0-61.0 | 34.0-37.0 | 30.0-34.0 |
| Chromium (Cr) | 10 | 20.0-23.0 | 28.0-31.0 | 15.0-18.0 | 18.0-21.0 | 18.0-21.0 | |
| Iron (Fe) | -- | ≤1.0 | ≤1.0 | Rest | Rest | Rest | |
| Grades | Cr10Ni90 | Cr20Ni80 | Cr30Ni70 | Cr15Ni60 | Cr20Ni35 | Cr20Ni30 |
| Max. Service 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℃ (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 |
| Specific Heat (J/g.℃) | -- | 0.44 | 0.461 | 0.494 | 0.5 | 0.5 |
| Thermal Conductivity (KJ/m.h.ºC) | -- | 60.3 | 45.2 | 45.2 | 43.8 | 43.8 |
| Coefficient of Lines Expansion (α×10⁻⁶/20~1000ºC) | -- | 18 | 17 | 17 | 19 | 19 |
| Micrographic Structure | -- | Austenite | Austenite | Austenite | Austenite | Austenite |
| Magnetic Properties | -- | Non-magnetic | Non-magnetic | Non-magnetic | Weak magnetic | Weak magnetic |
- Maintains mechanical stability at high temperatures between 1100°C - 1200°C, preventing deformation and structural degradation
- Forms a protective chromium oxide layer, preventing oxidation and surface degradation, making it ideal for extreme environments
- Provides high electrical resistance, making it suitable for electrical heating elements and resistance wires
- Ideal for applications where magnetic interference must be minimized, ensuring reliable performance in electronics and aerospace applications
- Remains ductile and easy to process, even after prolonged high-temperature exposure
- Withstands frequent temperature fluctuations, making it ideal for industrial heating systems and automotive exhaust applications
- Due to its high durability and minimal permanent elongation, NiCr alloy components retain their structural integrity over extended use providing longer service life
- Industrial & domestic heating systems: Used as heating elements in industrial and residential electric furnaces, including electric resistance wires and heating coils
- Aerospace components: Applied in aircraft engine parts and aerospace structural components requiring high-temperature durability
- Chemical & petrochemical processing: Resistant to corrosive environments, making it ideal for reactor vessels, pipelines, and processing equipment
- Electronics & electrical engineering: Commonly used in resistors, sensors, and other precision electronic components
- Automotive industry: Essential for turbochargers, exhaust systems, and other high-temperature components
- Medical equipment: Utilized in dental prosthetics (e.g., porcelain-fused-to-metal crowns) and orthopedic implants due to its biocompatibility and durability
- Nuclear engineering: Critical for nuclear power plant components exposed to extreme radiation and high temperatures
