Cr25Ni20 Austenitic Alloy With Large Specific Resistance For Electric Heating Applications

Cr25Ni20 Austenitic Alloy with Large Specific Resistance for Electric Heating Applications

Cr25Ni20 is a high-performance nickel-chromium-iron alloy consisting of approximately 25% chromium, 20% nickel, and the balance iron. This alloy is designed to withstand extreme conditions, offering excellent resistance to oxidation, carburization, and other forms of high-temperature corrosion. Its superior mechanical strength and stability at elevated temperatures make it ideal for applications in demanding industrial environments.

The alloy's composition provides a balance of oxidation resistance and structural integrity, mking it suitable for prolonged use in temperatures up to 1100°C (2012°F). It also exhibits good creep strength and resistance to thermal fatigue, essential for high-temperature industrial processes.

Cr25Ni20 is widely used in applications such as heat treatment equipment, furnace components, petrochemical processing, and power generation. Typical components include heating elements, radiant tubes, heat exchangers, and combustion systems. Its durability, resistance to scaling, and reliable performance in harsh environments make it a preferred material in industries requiring high-temperature strength and corrosion resistance.

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

Technical data of wires

Some key features of Cr25Ni20 include:

• High-Temperature Resistance:

Maintains strength and structural integrity at temperatures up to 1100°C (2012°F), making it suitable for extreme heat applications.

• Excellent Oxidation Resistance:

Resists oxidation in both air and combustion environments, ensuring long-term performance in high-temperature settings.

• Corrosion Resistance:

Offers good resistance to carburization, nitridation, and sulfidation, even in chemically aggressive environments.

• Good Mechanical Strength:

High tensile strength and creep resistance at elevated temperatures, ensuring reliability in demanding conditions.

• Thermal Fatigue Resistance:

Withstands thermal cycling and repeated heating and cooling without significant degradation or cracking.

• Durability in Harsh Conditions:

Resists scaling and degradation in corrosive and oxidizing atmospheres, making it ideal for prolonged use in industrial processes.

• Weldability and Fabricability:

Can be easily welded and fabricated into complex shapes for specific industrial requirements.

• Versatility:

Suitable for a variety of industrial applications, including heat exchangers, furnace components, and petrochemical processing equipment.

These features make Cr25Ni20 a reliable choice for high-temperature, high-stress applications across multiple industries.

Applications:

• Heat Treatment Industry:

Furnace Components: Used in furnace linings, trays, and fixtures due to its resistance to oxidation and thermal fatigue.

Heating Elements: Ideal for heating elements operating at high temperatures.

• Petrochemical Industry:

Reformer Tubes: Suitable for use in reformer and cracker tubes exposed to carburizing and oxidizing atmospheres.

Catalyst Support Structures: Withstands high temperatures in catalytic reactors.

• Power Generation:

Heat Exchangers: Used in boilers and other systems requiring resistance to thermal stress and corrosion.

Combustion Systems: Components in turbines, burners, and exhaust systems.

• Aerospace and Automotive:

Exhaust Systems: Utilized in high-performance automotive and aircraft exhaust systems for its heat resistance.

Turbine Components: Suitable for hot gas environments in jet engines and power turbines.

• Metal Processing:

Kiln Components: Lining materials and support structures in kilns and metallurgical equipment.

Rollers and Conveyor Belts: Used in industrial kilns and continuous casting operations.

• Chemical Processing:

Reactors and Retorts: Handles aggressive chemical environments in high-temperature reactors and chemical processing equipment.

• Glass Manufacturing:

Molds and Tools: Operates effectively in high-temperature glass forming processes.

• Cement Industry:

Rotary Kilns: Utilized in components subjected to extreme heat and corrosive atmospheres during cement production.

Cr25Ni20’s ability to withstand high temperatures, corrosion, and mechanical stress makes it indispensable in industries where durability and reliability are critical.

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.