Cr20Ni30 Austenitic Stainless Steel Alloy For Superior Mechanical Properties

Cr20Ni30 The Austenitic Stainless Steel Alloy for Superior Mechanical Properties and More

NiCr Alloy Wire Cr20Ni30 is a nickel-chromium-based alloy consisting of 20% chromium and 30% nickel, designed primarily for high-temperature applications, oxidation resistance, and electrical resistivity. This alloy is widely used in environments that require durability under heat and exposure to oxidizing atmospheres, such as in industrial heating elements, resistors, and high-temperature furnace applications. NiCr Alloy Wire Cr20Ni30 is a versatile and durable alloy suitable for high-temperature environments, offering excellent oxidation resistance, stable electrical resistivity, and mechanical strength. Commonly used in applications such as heating elements, resistors, and industrial furnaces, it excels in environments where both high heat and electrical resistivity are critical. While more expensive than common materials, its performance in extreme conditions makes it a preferred choice for specialized industrial uses, including electrical heating and thermal applications.

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

Key Features of NiCr Alloy Wire Cr20Ni30:

• Composition:

Nickel (Ni): 30% (provides stability and resistance to oxidation at elevated temperatures).

Chromium (Cr): 20% (gives the alloy excellent resistance to oxidation and scaling).

Iron (Fe): Balance (adds to the structural integrity and forms the base of the alloy).

Other Elements: Minor amounts of manganese, silicon, and carbon to improve mechanical properties, formability, and welding characteristics.

• High-Temperature Resistance:

Oxidation Resistance: With its chromium content, this alloy forms a protective oxide layer that prevents further degradation from oxidation, even at temperatures up to 1000°C (1832°F).

Thermal Fatigue Resistance: The alloy resists thermal cycling, making it suitable for applications with fluctuating temperatures, such as in furnaces or heating systems.

• Electrical Resistivity:

Moderate Electrical Resistivity: This alloy provides stable electrical resistance at elevated temperatures, making it ideal for use in resistors, heating elements, and temperature sensors.

Stable Resistance: The alloy’s resistive properties are stable even under thermal stress, which is critical for precision heating and electrical components.

• Corrosion and Scaling Resistance:

Oxidation Resistance: Forms an oxide layer that shields the material from oxidative damage, allowing it to withstand high-temperature environments.

Sulfidation Resistance: Performs well in sulfur-rich atmospheres, making it suitable for applications like industrial furnaces or environments involving gas streams that contain sulfur.

• Mechanical Properties:

Tensile Strength: The alloy maintains good tensile strength at high temperatures, making it durable under mechanical stress.

Ductility: Although the alloy is strong, it retains sufficient ductility to allow for easy forming into wires, strips, or other shapes.

• Weldability and Fabrication:

Weldability: NiCr Alloy Cr20Ni30 can be welded using standard methods such as TIG (Tungsten Inert Gas) and MIG (Metal Inert Gas) welding, ensuring a strong bond with minimal risk of cracking.

Formability: The alloy can be easily drawn into wires, rods, and strips, making it versatile for a wide range of applications in electrical heating, industrial equipment, and other high-temperature applications.

Applications:

• Heating Elements: Ideal for use in electric furnaces, ovens, dryers, and other high-temperature heating systems.
• Resistors and Thermocouples: Suitable for resistive heating elements and temperature sensors used in high-temperature environments.
• Industrial Furnaces and Kilns: Commonly used for radiant tubes, furnace components, and heat exchangers due to its excellent resistance to oxidation and thermal cycling.

Technical data of wires

The tolerance or wires diameter

Technical data of ribbon

Advantages of NiCr Alloy Wire Cr20Ni30:

• High-Temperature Stability: The alloy remains stable and performs well at temperatures up to 1000°C (1832°F), making it ideal for industrial heating and electrical applications.
• Excellent Oxidation and Corrosion Resistance: Resistant to oxidation, scaling, and corrosion, ensuring a long service life even in harsh environments.
• Electrical Resistivity: Provides stable and reliable electrical resistance, perfect for use in heating elements and resistive applications.
• Durability in Thermal Cycling: Performs well in environments with fluctuating temperatures, ensuring reliability in applications like furnaces and thermal processing.
• Ease of Fabrication and Welding: Easy to process into wires, strips, and other forms for various applications. It can also be welded using common techniques.

Limitations of NiCr Alloy Wire Cr20Ni30:

• Cost: Due to its nickel and chromium content, it is generally more expensive than other alloys like stainless steel, making it less economical for large-scale applications where these elements are not required.
• Limited Resistance to Highly Acidic Environments: While it resists oxidation, it may not perform well in highly acidic or chloride-rich environments, where specialized alloys (e.g., Inconel) may be more effective.
• Work Hardening: This alloy may harden during cold working, which could require additional processing steps for machining or forming.

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.