Metallurgy Industy Cr20Ni30 600-650 MPa 1400℃ With High Temperature Resistance
Product Introduction
Cr20Ni30 wire has a wide range of applications in the metallurgical field, mainly due to its excellent corrosion resistance and high temperature performance. The main components of this alloy include 20% chromium (Cr) and 30% nickel (Ni), and the combination of these components makes it perform well in high temperature and corrosive environments. The physical properties of Cr20Ni30 wire include density 8.14 g/cm³, melting point range between 1370-1400℃, tensile strength of at least 550 MPa, yield strength of at least 220 MPa, and elongation of at least 30%.
In the metallurgical field, Cr20Ni30 wire is often used to manufacture high-temperature heating equipment, such as heat treatment furnaces, annealing furnaces, etc., which require long-term stable heating under high temperature conditions. Cr20Ni30 wire, with its good resistance stability and durability, can meet these high-demand working conditions and ensure the efficient operation of the equipment. In addition, the excellent oxidation resistance and corrosion resistance of Cr20Ni30 wire enable it to work stably for a long time in harsh environments, and it is particularly suitable for industries with strong high-temperature corrosion such as chemistry and metallurgy.
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
- Electric furnace heating element: It can be used to make heating elements such as furnace wire in electric furnace. It has good oxidation resistance and stable resistance characteristics at high temperature. It can work for a long time at more than 1100℃, providing a stable and reliable heat source for electric furnace heating in metallurgical production.
- Heat treatment furnace: In the heat treatment process of metallurgical materials, such as annealing, quenching, tempering and other processes, Cr20Ni30 wire can be used as a heating element of the heat treatment furnace to ensure the uniformity and stability of the temperature in the furnace, and meet the strict temperature requirements of the heat treatment process of different metal materials.
- High temperature furnace: It is suitable for various high temperature furnaces in the metallurgical industry, such as smelting furnaces, sintering furnaces, etc., used to heat metal raw materials or perform high temperature synthesis of materials. Its excellent high temperature strength and corrosion resistance can adapt to the harsh working environment of metallurgical furnaces.
- Heat exchanger: In the metallurgical production process, heat exchangers are used to realize heat transfer and recycling. Cr20Ni30 wire has good corrosion resistance and wear resistance, and can be used to manufacture key components in heat exchangers to improve the service life and work efficiency of heat exchangers.
Advantages and Characteristics
- High resistivity: The resistivity of Cr20Ni30 alloy is relatively high, about 1.18 Ωmm²/m (20℃) at room temperature, which is very suitable for use as a resistance element.
- Stable temperature coefficient: The alloy has a good temperature coefficient resistivity, and the temperature coefficient is less than 1.5×10⁻⁵/℃ in the temperature range of 20℃ to 1000℃, which means that the resistance value changes less at high temperatures, ensuring the long-term stable operation of the equipment.
- High strength and high toughness: Cr20Ni30 alloy has good mechanical properties at both room temperature and high temperature. Its tensile strength is 450 MPa (room temperature), elongation is ≥25%, and yield strength is 300 MPa. These parameters show that Cr20Ni30 alloy can not only withstand high temperatures, but also has relatively strong deformation ability in a long-term working environment, and is not prone to fracture or excessive deformation.
- High temperature performance: In the high temperature range of 600℃ to 1200℃, Cr20Ni30 alloy can still maintain stable oxidation resistance, thanks to the chromium and nickel elements contained in its alloy. These two elements form a dense protective layer of chromium oxide and nickel oxide in a high temperature environment, which prevents further penetration of oxygen and reduces the oxidation rate of the material.
Contact Us
Email:fbwlau@cnrunlai.com
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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 is the heat treatment process of Cr20Ni30 wire?
A: The heat treatment process of Cr20Ni30 wire includes annealing and solution treatment. The annealing temperature is usually 800°C to 1000°C for 1-2 hours to eliminate internal stress and improve the plasticity and toughness of the material.
Q: What are the main application areas of Cr20Ni30 wire?
A: Cr20Ni30 wire is widely used in the manufacture of resistor elements in high temperature environments such as high temperature electric heating elements, resistors, industrial furnaces, electric heating tubes, and electric furnace wires.
Q: What is the service life of Cr20Ni30 wire?
A: After continuous use of Cr20Ni30 wire at 1200°C for 2000 hours, the resistance value changes within ±5%, showing a long service life.
Q: What is the fatigue performance of Cr20Ni30 wire?
A: Cr20Ni30 wire shows good thermal fatigue resistance in repeated heating and cooling cycles, and can maintain good toughness and strength at high temperatures.
