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SWG 33 34 35 Annealed Alloy Nicr 70/30 Wire Heat Treatment Equipment Ni70Cr30 Resistance Wire
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xProduct Details
| Delivery Time | 7-20 Days | Material | Nickel, Chromium |
|---|---|---|---|
| Nickel(Min) | 66% | Resistivity | 1.18+/-0.05 |
| Tensile Strength | 637MPA | Elongtation | ≥20% |
| Application | Heating, Resistivity | Condition | Hard / Soft |
| Sureface | Bright, Oxided, Acide | Name | Resistance Heating Wire |
| Highlight | Annealed Ni70Cr30 Resistance Wire,Annealed Alloy Ni70Cr30 Resistance Wire,Heat Treatment Equipment Ni70Cr30 Resistance Wire |
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Product Description
- Ni70Cr30 Heating Resistance Wire
Ni70Cr30 is an austenitic nickel-chromium alloy suitable for temperature applications up to 1250°C. High chromium content (30% in average) provides very good life time, especially in the furnace applications.
Ni70Cr30 is characterized by high resistivity, good oxidation resistance, good ductility after use and excellent weldability. Alloy is not subject to “green rot” and is particularly well suited for reducing and oxidizing atmospheres.
- Heating Elements for Heat Treatment Furnaces
Ni70Cr30 resistance wire is often used as heating elements in heat treatment furnaces to heat metal workpieces for heat treatment. It provides stable heating temperature and uniform heating effect, ensuring the accuracy and reliability of the heat treatment process.
- Heaters for Vacuum Furnaces
During vacuum heat treatment processes, Ni70Cr30 resistance wire is commonly used as heaters in vacuum furnaces to heat workpieces in high-temperature and low-pressure environments. It has excellent corrosion resistance and can work stably in harsh working environments for long periods.
- Heating Elements for Annealing Furnaces
Ni70Cr30 resistance wire is also commonly used in various annealing furnaces as heating elements for annealing metal materials. It provides proper heating rate and temperature control to ensure the quality of annealing.
- Heaters for Atmosphere Furnaces
When heat treatment is conducted under controlled atmospheres, Ni70Cr30 resistance wire is widely used as heaters in atmosphere furnaces. It can work stably under different atmospheres, ensuring the accuracy and consistency of the heat treatment process.
- Heating Elements for Carburizing Furnaces
During the surface carburizing process of metals, Ni70Cr30 resistance wire is often used as heating elements in carburizing furnaces to provide the necessary heating energy to achieve surface carburizing effects.
- Nickel-chromium alloy performance tables
| 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 | |
| μΩ·m,20℃ | |||||||
| Elongation at rupture | ≥20 | ≥20 | ≥20 | ≥20 | ≥20 | ≥20 | |
| Specific heat | -- | 0.44 | 0.461 | 0.494 | 0.5 | 0.5 | |
| J/g.℃ | |||||||
| Thermal conductivity | -- | 60.3 | 45.2 | 45.2 | 43.8 | 43.8 | |
| KJ/m.h℃ | |||||||
| Coefficient of lines expansion | -- | 18 | 17 | 17 | 19 | 19 | |
| a×10-6/ | |||||||
| (20～1000℃) | |||||||
| Micrographic structure | -- | Austenite | Austenite | Austenite | Austenite | Austenite | |
| Magnetic properties | -- | Nonmagnetic | Nonmagnetic | Nonmagnetic | Weak magnetic | Weak magnetic | |
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