Bright Surface Nichrome Wire Ni30Cr70 8.45 G/Cm³ Density With Excellent High Temperature Antioxidant Properties
Product Introduction
Cr30Ni70 Wire is a high resistance electric heating alloy wire, mainly composed of 30% chromium (Cr) and 70% nickel (Ni), with excellent high temperature resistance, oxidation resistance and good resistance stability. Density: 8.45 g/cm³. Melting point: about 1400°C. Tensile strength: ≥550 MPa at room temperature, and still maintains good strength at 1000°C. Elongation: ≥20% at room temperature.
Cr30Ni70 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: At 20°C, the resistivity is about 1.05-1.18×10⁻⁶Ω·m, and its resistivity changes relatively smoothly at high temperatures.
Density: 8.45 g/cm³.
Melting point: about 1400°C.
Thermal expansion coefficient: The average linear expansion coefficient in the temperature range of 20°C to 1000°C is about 13.0-17.0×10⁻⁶/°C.
Tensile strength: ≥550 MPa at room temperature, and it can still maintain good strength at 1000°C.
Elongation: ≥20% at room temperature.
| Performance material | Cr30Ni70 |
| Composición | Ni | Rest |
| Cr | 28.0～31.0 |
| Fe | ≤1.0 |
| Temperatura máxima℃ | 1250 |
| Punto de fusion ℃ | 1380 |
| Densidad g/cm3 | 8.1 |
| Resistividad μΩ·m,20℃ | 1.18±0.05 |
| Alargamiento a la ruptura | ≥20 |
| Calor especifico J/g.℃ | 0.461 |
| Conductividad térmica KJ/m.h℃ | 45.2 |
| Coeficiente de expansión de líneas a×10-6/(20～1000℃) | 17 |
| Estructura micrográfica | Austenite |
| Propiedades magnéticas | Nonmagnetic |
| 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
- Engine Parts and Turbine Blades: In the aerospace field, Cr30Ni70 Wire is used to manufacture equipment such as engine parts, turbine blades, and high-temperature furnaces. These parts need to work in extremely high temperature and high pressure environments, and the high-temperature strength and oxidation resistance of Cr30Ni70 Wire make it an ideal material.
- Heating Elements and Electric Heaters: Cr30Ni70 Wire is widely used to manufacture electric heating elements, heaters, and temperature sensors. Its high resistivity and good thermal stability enable it to provide stable heating effects in high temperature environments, suitable for equipment and application scenarios that require precise temperature control.
- Precision Measuring Equipment and Sensors: Cr30Ni70 Wire is suitable for use as a core component in precision instruments such as temperature sensors and pressure sensors due to its small and stable resistivity changes. For example, in thermocouples and thermistor sensors, Cr30Ni70 Wire can provide stable resistance changes to ensure the accuracy of measurements.
Advantages and Characteristics
- Good high temperature performance: The melting point of Cr30Ni70 Wire is about 1400°C to 1450°C, and it can work stably in the temperature range of 800°C to 1200°C. Its resistance performance changes little at high temperature, maintaining a relatively stable resistance characteristic.
- Low linear expansion coefficient: The linear expansion coefficient of Cr30Ni70 Wire is about 17.0×10^-6/°C (in the range of 20°C to 1000°C). This low expansion coefficient means that the alloy deforms less when the high temperature fluctuates, which helps to maintain the structural stability of the alloy and reduce cracking or deformation caused by thermal stress.
- Good mechanical properties: Cr30Ni70 Wire exhibits excellent creep resistance at high temperatures, especially in working environments above 1000°C, the tensile strength and yield strength of the alloy remain at a high level. This makes it perform well in the manufacture of high temperature resistance elements, ensuring that the material is not easily deformed at high temperatures.
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 mechanical properties of Cr30Ni70 Wire?
A: The tensile strength of Cr30Ni70 Wire at room temperature is ≥550MPa and the elongation is ≥20%. At high temperatures, especially in high temperature environments around 1000°C, it can still maintain good mechanical strength and resistivity.
Q: What is the oxidation resistance of Cr30Ni70 Wire?
A: Cr30Ni70 Wire exhibits excellent oxidation resistance in high temperature environments. The increase in chromium content enables the alloy to form a stable oxide layer in an oxidizing atmosphere, effectively preventing the alloy from further oxidation. The oxidation rate at 1000°C is extremely low, and it can work in a high temperature environment for a long time without losing performance.
Q: What is the corrosion resistance of Cr30Ni70 Wire?
A: The high nickel content of Cr30Ni70 Wire further enhances the corrosion resistance of the alloy, especially its durability in corrosive atmospheres such as sulfides or oxides, making it widely used in industrial fields that require high temperatures and corrosive environments.
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Bright Surface Nichrome Wire Ni30Cr70 8.45 G/Cm3 Density 550 MPa Images
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