Bright Surface Resistance Alloy Wire 1.04±0.05μΩ·m Cr20Ni30 Nickel Chromium Wire
Product Introduction
Cr20Ni30 Wire is a high resistance electric heating alloy wire, mainly composed of 20% chromium (Cr) and 30% nickel (Ni), with excellent corrosion resistance, oxidation resistance and high temperature stability.
Resistivity: about 1.04±0.05μΩ·m (20℃) at room temperature. Density: 7.90 g/cm³. Melting point: above 1400℃. Thermal conductivity: 11.3 W/(m·K).
Cr20Ni30 Wire is widely used in electric heating elements, furnace heating elements, electric furnace lining materials, electronic components and other fields. Its excellent high temperature oxidation resistance and resistance characteristics make it the preferred material for electric heating equipment. In addition, it is also suitable for thermocouples, industrial heaters, resistors, chemical equipment, vacuum equipment and aerospace fields.
Size dimension range:
Wire: 0.01-10mm
Ribbons: 0.05*0.2-2.0*6.0mm
Strip: 0.05*5.0-5.0*250mm
NiCr series: Cr10Ni90,Cr20Ni80, Cr30Ni70, Cr15Ni60, Cr20Ni35, Cr20Ni30
Parameter
- Resistivity: about 1.04±0.05μΩ·m (20℃) at room temperature.
Density: 7.90 g/cm³.
Melting point: above 1400℃.
Thermal conductivity: 11.3 W/(m·K).
Linear expansion coefficient: about 12.5 × 10⁻⁶ /℃ (in the range of 20-1000℃).
Tensile strength: about 600-650 MPa at room temperature, and can still maintain a high tensile strength of about 300-350 MPa at a high temperature of 800℃.
Elongation: 25-30% at room temperature, which decreases significantly at high temperature, but still remains at about 15%.
| Performance material | Cr20Ni30 |
| Composición | Ni | 30.0～34.0 |
| Cr | 18.0～21.0 |
| Fe | Rest |
| Temperatura máxima℃ | 1100 |
| Punto de fusion ℃ | 1390 |
| Densidad g/cm3 | 7.9 |
| Resistividad μΩ·m,20℃ | 1.04±0.05 |
| Alargamiento a la ruptura | ≥20 |
| Calor especifico J/g.℃ | 0.5 |
| Conductividad térmica KJ/m.h℃ | 43.8 |
| Coeficiente de expansión de líneas a×10-6/(20～1000℃) | 19 |
| Estructura micrográfica | Austenite |
| Propiedades magnéticas | Weak magnetic |
| 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 | Long=50~1000 |
Specific Applications
- Industrial furnaces: Cr20Ni30 Wire is often selected as a key electric heating element in industrial furnaces, such as in carburizing furnaces, bell furnaces and other periodic heat treatment furnaces. With its high temperature resistance, it ensures uniform and stable temperature in the furnace and meets the heat treatment process requirements of metal materials.
- Household appliance heating parts: Cr20Ni30 Wire is an ideal choice for making high-end electric heating tubes and heating wires for household electric heaters. It can provide efficient and stable heating functions for household appliances such as electric kettles and rice cookers, ensuring the normal operation and service life of household appliances.
- Precision resistance components: In the electronics industry, Cr20Ni30 Wire is used to produce various precision resistance components, such as high-precision resistors, potentiometers and thermistors. Its stable resistance characteristics and low temperature coefficient enable it to accurately control current and voltage in electronic equipment, ensuring the stable performance of electronic products.
- High temperature environment components: In the aerospace field, Cr20Ni30 Wire is used to manufacture aircraft engines and other resistive components that work in high temperature environments. It can withstand extreme high temperatures and mechanical stress, ensuring the reliability and safety of aviation equipment during flight.
Advantages and Characteristics
- High resistivity and stability: Cr20Ni30 Wire has a high resistivity of about 1.18 Ω·mm²/m (at 20°C), which enables it to generate sufficient heat in electric heating elements. Moreover, even under high temperature conditions, its resistance value can remain relatively stable, ensuring that the heating effect of the electric heating element is not affected by temperature changes.
- Excellent anti-oxidation ability: The alloy contains chromium and nickel elements, which will form a dense oxide film at high temperature, like a solid protective cover to prevent the metal inside the alloy from being oxidized and corroded. Even in a high temperature environment above 1000°C, this oxide film can effectively protect the alloy matrix and significantly extend its service life.
- Excellent high temperature resistance: The melting point of Cr20Ni30 Wire is about 1400℃, and it can work stably at high temperatures of about 1200℃. This property makes it an ideal material for manufacturing high-temperature electric heating elements, which can meet the needs of various high-temperature processes.
Contact Us
Email:fbwlau@cnrunlai.com
Oem service:
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Support and Services:
Our Nichrome Alloy product comes with technical support and services to ensure optimal performance and customer satisfaction:
- Expert consultation on product selection and application
- Technical assistance for installation and maintenance
- Product testing and analysis for quality control
- Customized solutions for unique customer needs
- Training and education on product use and safety
We are committed to providing our customers with the highest level of support and service for our Nichrome Alloy product.
Packing and Shipping:
Product Packaging:
- The Nichrome Alloy product will be packaged securely in a durable cardboard box to ensure safe transport.
- The product will be wrapped in protective bubble wrap to prevent any damage during shipping.
- A label with the product name and details will be placed on the box for easy identification.
Shipping:
- The product will be shipped via a reputable courier service within 2 business days of receiving the order.
- Customers will receive a tracking number once the product has been shipped.
- Please allow 5-7 business days for delivery.
- If there are any issues with the product or shipping, please contact our customer service team for assistance.
Related Questions and Answers
Q: What are the advantages of Cr20Ni30 Wire?
A: Cr20Ni30 Wire has high resistivity, low temperature coefficient, good oxidation resistance and high temperature stability, especially in high temperature environment, suitable for manufacturing high-precision electric heating elements and resistors.
Q: What are the main characteristics of Cr20Ni30 Wire?
A: The main characteristics of Cr20Ni30 Wire include high resistivity, low temperature coefficient, good oxidation resistance and high temperature stability. Its oxide film is stable in high temperature environment and can effectively prevent oxidation and corrosion.
Q: What are the main application areas of Cr20Ni30 Wire?
A: Cr20Ni30 Wire is widely used in high temperature environments such as electric heating elements, heat treatment furnaces, heating resistors, thermocouples, etc., especially in heat treatment furnaces with a use temperature above 1100℃.
Product Tags:
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600-650 MPa Bright Surface Resistance Alloy Wire Cr20Ni30 Nickel Chromium Ribbon Images
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