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- 4J329(4J29)
- 4J336(4J36)
- 4J342(4J42)
- 4J343(4J43)
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- 4J350(4J50)
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- 1J485(1J85)
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- 4J332A(4J32A)
- 4J328(4j34)
- 4J329(4J29)
- 4J336(4J36)
- 4J342(4J42)
- 4J343(4J43)
- 4J352(4J49)
- 4J350(4J50)
- 6J415(6J15)
- 6J420(6J20)
- 6J422(6J22)
- 6J423(6J23)
- 6J424(6J24)
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Nickel-chromium Alloys Electrothermal strip Cr25Ni20
Overview
The Cr25Ni20 Nickel-Chromium Electrothermal Strip is designed for extreme high-temperature environments, with 25% chromium and 20% nickel. It offers excellent oxidation resistance and high resistivity, ideal for industrial furnaces, heat treatment equipment, and glass manufacturing, with a sustained operating temperature up to 1200°C.
Limiting Chemical Composition, %
Chromium(Cr)..................................................................................................................................25.0
Aluminum(Ni)..................................................................................................................................20.0
Balance Iron (Fe) & Trace Elements
Material Characteristics
Density |
about 8.4g/cm³ |
Resistivity |
1.28 μΩ·m (20℃) |
Temperature Range |
Continuous Service 1150℃~1300℃, Short-Term Peak 1350℃ |
Key Advantages
● Dual High-Content Reinforcement:
30% Cr + 70% Ni synergy provides triple protection against carburization, sulfidation, and extreme-temperature oxidation.
● Extreme Mechanical Strength:
Maintains ≥200 MPa tensile strength at 1300℃, resisting high-temperature creep deformation.
● Superior Chemical Inertness:
Corrosion rate <0.1 mm/year in strong acids, alkalis, and halogen-containing atmospheres.
Typical Applications
● Chemical Reactors:
Heating elements and catalyst carrier wires for ethylene cracking furnaces and ammonia synthesis reactors.
● Nuclear Energy Systems:
Heating wires for reactor control rods, resistance components in high-temperature cooling circuits.
● Special Metallurgy:
Radiant tubes and heating coils for tungsten-molybdenum sintering furnaces and superalloy melting systems.
Technical Specifications
Parameter | Numeric | Unit |
---|---|---|
Melting Point | 1450-1480 | ℃ |
Tensile Strength | ≥750 | MPa |
Elongation | ≥15 | % |
Surface Finish | Bright/Electropolished | - |
Diameter Range | 0.3-10.0 | mm |
Target Industries
● Chemical & Petrochemical
● Nuclear & New Energy
● Special Metallurgy & Aerospace
● Semiconductor Fabrication
Packaging & Certifications
● Packaging:
Double-layer vacuum moisture-proof packaging/stainless steel spools, ≤100m/coil (ultra-clean processing available).
● Certifications:
ASME SB166, ISO 6208, NACE MR0175, Compliant with ASME III for Nuclear Applications.
Why Choose Cr25Ni20?
● Strategic Material Alternative:
Replaces Inconel 600 in carburizing/sulfidizing environments with 30% cost reduction.
● Full Lifecycle Support:
High-temperature performance simulation, failure analysis, and custom pre-oxidized coatings (Al₂O₃/SiO₂).
Available Forms
We provide you with a variety of product forms, including but not limited to
● Strip & Foil
● Round Wire &Flat Wire
● Bar & Rod
● Electrothermal Strip
● Flange & Ring
● Wire & Welding
● Reststance Wire
● Electric Alloy Wire
● Electric Furnace Bar
● Customize
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