| 1. Composition |
– Cr (Chromium): 20%
– Ni (Nickel): 80% |
– Cr (Chromium): 15%
– Ni (Nickel): 60% |
– Cr (Chromium): 20%
– Ni (Nickel): 35% |
| 2. Maximum Operating Temperature |
≤1200°C in air, ≤1250°C in inert gas |
≤1000~1100°C in air |
≤1100~1200°C in air (slightly lower long-term stability) |
| 3. Electrical Resistivity (20°C) |
~1.09 μΩ·m (high resistivity, high heating efficiency) |
~1.0 μΩ·m (medium resistivity) |
~1.1 μΩ·m (slightly higher than Cr15Ni60) |
| 4. High-Temperature Oxidation Resistance |
Excellent; dense and stable Cr₂O₃ oxide film, resistant to long-term oxidation |
Moderate; lower Cr content weakens oxide film protection |
Good, but lower Ni content leads to slightly poorer oxide film stability |
| 5. Mechanical Properties |
– Annealed tensile strength ≥650 MPa
– Elongation ≥20% (excellent plasticity) |
– Annealed tensile strength ≥600 MPa
– Elongation slightly lower than Cr20Ni80 |
Room-temperature strength similar to Cr20Ni80, but high-temperature strength decays faster |
| 6. Corrosion Resistance |
Resistant to oxidizing gases and non-strong acid environments |
Suitable for moderate-temperature environments without severe corrosion |
Corrosion resistance between Cr20Ni80 and Cr15Ni60 |
| 7. Typical Applications |
– High-temperature electric furnaces, glass melting furnaces, semiconductor equipment
– Aerospace heating elements |
– Industrial ovens, household heaters, medium-temperature drying equipment |
– Heat treatment furnaces, chemical equipment (non-acidic gases)
– Short-term high-temperature auxiliary heating elements |
| 8. Advantages |
Optimal high-temperature and oxidation resistance with strong long-term stability |
Lower cost, suitable for medium-temperature and low-load scenarios |
Higher Cr content balances cost and corrosion resistance |
| 9. Limitations |
High cost due to high Ni content |
Lower high-temperature str |
Published: 2025-06-16 02:28:46
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