Cr25Ni20 Nickel Chromium Wire With Excellent Oxidation Resistance And Creep Resistance For Industrial

Cr25Ni20 Nickel Chromium Wire with Excellent Oxidation Resistance and Creep Resistance for Industrial

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

Technical data of wires

Some key features of Cr25Ni20 include:

• Composition:

Nickel (Ni): 20% (provides good thermal stability, corrosion resistance, and electrical resistivity).

Chromium (Cr): 25% (enhances the alloy’s ability to withstand oxidation and high temperatures).

Iron (Fe): Balance, improving workability and mechanical strength.

Other Elements: Small amounts of manganese, silicon, and carbon to enhance strength and weldability.

• High-Temperature Resistance:

Oxidation Resistance: The 25% chromium content helps form a protective oxide layer on the surface of the alloy, preventing oxidation even at elevated temperatures, typically up to 1000°C (1832°F).

Thermal Stability: Maintains its mechanical properties at high temperatures, making it ideal for use in heating elements and furnaces where high heat cycling is required.

• Electrical Resistivity:

Moderate Electrical Resistivity: The alloy offers a relatively stable electrical resistance, making it suitable for use in resistive heating elements, resistors, and temperature sensors.

The temperature coefficient of resistance (TCR) remains relatively consistent over a range of temperatures, ensuring stable performance in resistive applications.

• Corrosion and Scaling Resistance:

Excellent Oxidation Resistance: Due to the high chromium content, the alloy provides excellent protection against oxidation in high-temperature air and oxidizing environments.

Sulfidation Resistance: Performs well in sulfur-rich environments, maintaining its integrity even when exposed to high temperatures and corrosive gases.

• Mechanical Properties:

Tensile Strength: Offers good tensile strength at high temperatures, capable of withstanding mechanical stresses in thermal applications.

Ductility: Exhibits adequate ductility, making it suitable for forming into wires, strips, or coils for a variety of uses.

Thermal Fatigue Resistance: Resists thermal cycling and maintains its strength even under repeated heat shock conditions.

• Weldability and Fabrication:

Weldable: Can be welded using conventional methods such as GTAW (TIG) and GMAW (MIG). Special care should be taken to prevent the formation of cracks during welding.

Formability: The alloy is easy to draw into wire, coil, and strip forms, making it adaptable for a wide range of industrial applications.

Applications:

• Heating Elements: Ideal for use in electric furnaces, heating coils, and thermal processing where stable performance at high temperatures is required.
• Resistors: Frequently used in resistors and other electrical components that rely on stable resistivity at elevated temperatures.
• Industrial Furnaces and Ovens: Suitable for components exposed to high heat, such as in industrial ovens, dryers, and metal heat treatment furnaces.
• Temperature Sensors: Can be used in thermocouples and temperature measurement devices that need to operate at high temperatures.

Advantages of Cr25Ni20 NiCr Alloy Wire:

• High-Temperature Performance: Performs reliably at high temperatures (up to 1000°C or 1832°F), ideal for use in heating elements and furnaces.
• Oxidation Resistance: Provides strong resistance to oxidation in both air and high-temperature oxidative environments, which helps extend the life of heating elements and components.
• Stable Electrical Resistivity: Offers stable resistance over a broad temperature range, ensuring consistent performance in resistive heating and sensor applications.
• Durability: Resistant to thermal cycling, oxidation, and sulfidation, making it durable for industrial heating and high-temperature operations.
• Weldability and Fabrication: The alloy can be easily fabricated and welded for use in a variety of heating and resistive applications.

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.