Cr20Ni80/80Ni20Cr/NiCr8020 Nickel Chromium Wire Alloy Heating Element Anti Oxidation

Cr20Ni80/80Ni20Cr/NiCr8020 Nickel Chromium Wire Alloy Heating Element Anti Oxidation

Cr20Ni80 (also known as 80Ni20Cr or NiCr8020) is a nickel-chromium alloy consisting of approximately 20% chromium and 80% nickel. It is highly valued for its excellent resistance to oxidation and corrosion, especially at high temperatures. The high nickel content enhances its resistance to acidic and alkaline environments, while chromium provides a protective oxide layer that improves its durability and oxidation resistance.

This alloy is known for maintaining its strength and stability in extreme temperatures, typically up to 1,100°C (2,012°F), making it ideal for high-heat applications. It also offers good mechanical properties, such as strength, ductility, and resistance to wear and fatigue.

Cr20Ni80 is commonly used in applications such as heating elements, electric furnace components, resistors, and industrial equipment that require resistance to thermal stress, oxidation, and corrosion. It is a reliable material for use in industries like electric heating, chemical processing, and high-temperature applications.

Trade Code

Main characteristics of Ni-Cr and Ni-Cr-Fe electric heating alloys

Some key features of Cr20Ni80 include:

• High Electrical Resistivity:

Cr20Ni80 has a high electrical resistivity of approximately 1.09 μΩ·m at 20°C, which is beneficial for applications requiring high resistance values in a small volume.

• Temperature Coefficient of Resistance (TCR):

The alloy exhibits a low TCR of less than 200 ppm/°C over the range of 20°C to 1000°C, indicating minimal resistance change with temperature variations.

• Corrosion and Oxidation Resistance:

Cr20Ni80 demonstrates excellent resistance to corrosion and oxidation, especially in oxidizing environments, with a formation of a protective chromium oxide layer at high temperatures.

• Mechanical Strength:

The alloy possesses good mechanical strength with a tensile strength of at least 650 MPa and an elongation rate of 20% at room temperature.

• Thermal Properties:

Cr20Ni80 has a thermal conductivity of 15 W/(m·K) at 20°C and a coefficient of thermal expansion of 18 x 10⁻⁶/°C, contributing to its stability and performance in high-temperature applications.

• High-Temperature Performance:

It can be used continuously up to 1200°C in air, making it suitable for high-temperature heating elements and other components that require long-term stability at elevated temperatures.

• Processing and Formability:

Cr20Ni80 can be processed through various methods including cold rolling, hot rolling, and drawing, offering flexibility in manufacturing heating elements and other components.

These characteristics make Cr20Ni80 an ideal material for high-temperature electrical heating applications where resistance stability, corrosion resistance, and mechanical strength are critical.

Applications:

• Heating Elements: Cr20Ni80 is extensively used in heating elements for both domestic and industrial appliances due to its high resistance to oxidation and corrosion, especially under conditions of frequent switching or wide temperature fluctuations.
• Industrial Furnaces: The alloy is utilized in industrial electric furnaces, enameling furnaces, and other high-temperature applications where its ability to withstand temperatures up to 1200°C (2190°F) is crucial.
• Electrical Resistance Elements: Known for its high electrical resistance and low temperature coefficient of resistance, Cr20Ni80 is ideal for resistors in high-temperature environments.
• Metal Sheathed Tubular Elements: Cr20Ni80 is used in the production of metal sheathed tubular heating elements, which are essential for various industrial heating processes.
• Cartridge Elements: The alloy is also used in cartridge elements, providing reliable performance in high-temperature heating applications.
• High-Quality Heat-Resistant Steel Structures: Components such as high-temperature mesh belts and burning frames benefit from the alloy's strength and resistance to high temperatures.
• Heating Wires: Cr20Ni80 is used in the manufacturing of heating wires for electric heating pipes and high-grade household electric heaters.

These applications leverage the superior properties of Cr20Ni80, including high electrical resistivity, excellent high-temperature strength, and good corrosion resistance, making it suitable for high-temperature and demanding environments.

Technical data of wires

The tolerance or wires diameter

Technical data of ribbon

Company Overview:

Jiangyin Chengxin Alloy Material Co., Ltd has more than 20 years of experience as the lead.ing alloy wire manufacturer in China. We offer a wide range of services from fine wire drawing toresistance wire manufacturing. Since the beginning, our specialty has been the quality and preci.sion of our products. We have the tightest tolerances and deliver within a few days to a fewweeks. As a result, we have become the leading alloy wire supplier in the industry.

Senphus Subsidiaries:

• Jiangyin Chengxin Alloy Material Co., Ltd.
• Jiangyin Senphus Electrical Materials Co., Ltd.
• Jiangsu Xiangcheng Supply Chain Management Co., Ltd.

Jiangyin Chengxin Alloy Material Co., Ltd.: With nearly 20 years of experience, Jiangyin Chengxin is a leading alloy wire manufacturer in China. We offer a wide range of services, from fine wire drawing to resistance wire manufacturing. Our specialty lies in the quality and precision of our products, achieving the tightest tolerances and delivering orders within days to weeks. As a result, we have established ourselves as the premier supplier of alloy wire in the industry.

Our product range includes:

• Copper-nickel alloys (CuNi1-CuNi44)
• Karma (Nikrothal L/Evanohm/Alloy 800)
• Manganin and Constantan
• Nickel-chromium alloys
• Thermocouple alloys (Type K, N, E, T, J)
• Thermocouple extension wire
• PTC thermistor resistance alloy
• Pure nickel wire and Monel alloy

These alloys are available in various forms, including wire, ribbon, stranded, and enamelled. Major applications include seat heating, underfloor heating, military projects, aerospace, household appliances, heating wire, mechanical and electrical plants, and temperature instruments. Our manufacturing processes are ISO 9001:2015 certified, and we specialize in fine and ultra-fine wire drawing, offering wire diameters from 0.025 mm (0.001") to 13 mm (0.51") in small batches, medium volumes, and mass production. We maintain a comprehensive quality inspection system, including in-house chemical analysis, chromatographic analysis, metallurgical analysis, pinhole tests, wire construction tests, and tension tests to ensure the highest quality standards.

Senphus Electrical Material Co., Ltd.: Founded in 2003, Senphus Electrical Material Co., Ltd. integrates research, manufacturing, and sales of electric heating alloys, heating cables, heating wires, and heating products. Leveraging over a decade of technical expertise in heating alloy wire, we have adopted advanced heating cable technology and machinery, successfully developing heating cables, temperature controllers, and temperature control systems suitable for building heating, pipe insulation, outdoor snow melting, wind power blade production, car seat heating, and healthcare applications.

The company is recognized as a high-tech enterprise in Jiangsu Province and a small giant enterprise in Jiangyin City, specializing in innovative technologies. We operate the "Wuxi Heating Cable Engineering Technology Research Center" and collaborate with experts from renowned domestic universities. Our portfolio includes 5 invention patents and over 30 utility model patents, showcasing our strong research and development capabilities.

With an annual output exceeding 1,000 tons of thermal alloy wire and an output value of approximately 105 million yuan, our products are well-received in markets such as the UK, Italy, Canada, Peru, and Spain. Our heating cables generate an annual output value of over 80 million yuan, with exports to Germany, Japan, the United States, Malaysia, Denmark, Brazil, and other countries.

The company has successfully passed multiple quality management system certifications, including IATF 16949, ISO 9001, ISO 14001 (Environmental Management System), and ISO 45001 (Occupational Health and Safety Management System). Our heating cables and related products have also obtained test reports from the Shanghai Cable Research Institute Test Center and received certifications such as UL (United States), VDE (Germany), CE (European Union), and RoHS.

Commitment to Quality: We adhere to the business commitment of "Reputation First, Quality First, Customer First" and uphold the quality policy of "Integrity-Based, Quality-Oriented, Excellent Service." We are dedicated to providing accurate products and professional services, and we look forward to collaborating sincerely with you to achieve mutual success.