NiCr Alloy Cr30Ni70/NiCr7030/ХН70Ю For Industrial Heating Elements And Resistance Applications In High-Temperature Environments

NiCr Alloy Cr30Ni70/NiCr7030/ХН70Ю for Industrial Heating Elements and Resistance Applications in High-Temperature Environments

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

Key Features of NiCr Alloy Wire (Cr30Ni70, NiCr7030, ХН70Ю):

• Composition:

Nickle (Ni): Approximately 70% — provides excellent resistance to corrosion, oxidation, and high-temperature stability.

Chromium (Cr): Approximately 30% — enhances oxidation resistance and contributes to the alloy's high-temperature strength.

Other Elements: May contain trace amounts of manganese, iron, and silicon to improve mechanical properties and processability.

• Corrosion and Oxidation Resistance:

Oxidation Resistance: The high chromium content enables the alloy to form a protective oxide layer, providing exceptional resistance to oxidation, even at temperatures up to 1200°C (2192°F).

Corrosion Resistance: Resistant to acids, alkalis, and saltwater, making it suitable for use in chemically aggressive environments.

Resistant to Scaling: Can withstand high-temperature exposure to air, reducing the risk of scaling or material degradation.

• High-Temperature Performance:

Temperature Stability: Retains mechanical strength and integrity even at high temperatures, up to 1100-1200°C (2012-2192°F).

Thermal Expansion: Exhibits a low coefficient of thermal expansion, which makes it stable under temperature variations.

• Mechanical Properties:

High Tensile Strength: Provides excellent mechanical strength at elevated temperatures.

Ductility: Exhibits good ductility and formability, making it suitable for bending, twisting, or other fabrication techniques.

Fatigue Resistance: Withstands thermal cycling and mechanical stress without compromising integrity.

• Weldability and Fabrication:

Ease of Fabrication: Easily fabricated into wires, strips, or other forms for industrial applications.

Weldable: Can be welded using standard techniques like GTAW and GMAW.

Formability: Can be drawn into fine wires for use in heating elements or resistance applications.

Applications:

• Heating Elements: Commonly used in electric resistance heating elements, such as those found in ovens, furnaces, and industrial heaters.
• Electrical Resistors: Suitable for the manufacture of high-temperature resistors, such as in industrial furnaces, kiln components, and in electrical appliances.
• Thermocouples: Employed as a thermocouple wire for temperature sensing in extreme environments.
• Aerospace and Power Generation: Used in turbine components, heat exchangers, and other high-temperature systems.
• Chemical Industry: Ideal for applications where high resistance to corrosive environments and high temperatures is required.

Advantages of NiCr Alloy Wire (Cr30Ni70, NiCr7030, ХН70Ю):

• High Temperature Resistance: Retains strength and stability even at extreme temperatures, making it ideal for heating elements and high-heat industrial applications.
• Corrosion and Oxidation Resistance: Performs well in corrosive environments, offering long service life in chemical processing industries.
• Excellent Mechanical Properties: Offers high tensile strength, ductility, and fatigue resistance.
• Weldable and Formable: Easy to work with and fabricate into various forms for different industrial uses.
• Versatile Application Range: Suitable for use in a wide range of high-temperature and corrosive applications, including heating systems, resistive elements, and electrical components.

Limitations of NiCr Alloy Wire (Cr30Ni70, NiCr7030, ХН70Ю):

• Cost: The high nickel content increases the cost of the alloy compared to other metals and alloys with lower nickel content.
• Work Hardening: The alloy may work harden during cold forming processes, requiring specialized techniques for fabrication.
• Mechanical Stress: While it has good strength at high temperatures, it may not be suitable for applications that involve extreme mechanical stress or heavy loads.

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.