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Cr20Ni80 4mm Nichrome Alloy Wire with Stable Electrical Performance and High-Temperature Oxidation Resistance for Drying Ovens

Lugar de origem	China
Marca	Huona
Certificação	ISO9001
Número do modelo	Cr20Ni80
Quantidade de ordem mínima	25KG
Preço	Negotiate
Detalhes da embalagem	Caixa, palete de madeira
Tempo de entrega	Depende da quantidade
Termos de pagamento	L/C, T/T, Western Union
Habilidade da fonte	100 toneladas/mês

Detalhes do produto

Nome do produto	Fio redondo Cr20Ni80 4mm	Modelo	Cr20Ni80
Material principal	Ni e Cr	Quantidade mínima	25KG
Tamanho	4mm	Vantagem	Desempenho elétrico estável
Uso	Fornos de secagem	Origem	China
Destacar	Stable Electrical Performance Nichrome Alloy Wire , 4mm Diameter Cr20Ni80 Wire , High-Temperature Oxidation Resistance Nichrome 80/20 Wire

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Descrição de produto

Cr20Ni80 4mm Round Wire Nichrome Alloy Wire Product Details

We are dedicated to providing high-performance nichrome alloy wires for global industrial applications, focusing on meeting the precise heating needs of drying ovens. Our Cr20Ni80 4mm Round Nichrome Wire is engineered with stable electrical performance, excellent high-temperature oxidation resistance and reliable mechanical strength, which is perfectly tailored for the heating elements of drying ovens. It ensures uniform heating, stable operation and long service life, providing solid support for industrial drying processes. Below is the detailed product information to help you make an informed purchase decision.

Product Overview

Our Cr20Ni80 4mm round wire is a high-quality nichrome alloy wire, also known as NiCr8020 nichrome 80/20 wire, which is a classic and widely used电热 alloy in the industrial heating field. With a standard diameter of 4mm and a smooth round cross-section, it is specially designed for the heating elements of drying ovens, and can also be applied to other industrial heating equipment. The core component ratio of this product is about 80% nickel (Ni) and 20% chromium (Cr), which endows it with stable electrical performance and excellent high-temperature durability. Its low resistance temperature coefficient ensures that the resistance value does not fluctuate significantly with temperature changes, making the heating of drying ovens uniform and stable, and effectively avoiding the problem of uneven drying of materials. At the same time, it forms a dense Cr₂O₃ protective film on the surface at high temperatures, which has superior oxidation resistance and can adapt to the long-term high-temperature working environment of drying ovens.

Core Specifications

Item	Specification
Alloy Grade	Cr20Ni80 (Equivalent to NiCr8020, Nichrome 80/20)
Wire Shape	Round Wire
Diameter	4.0mm (Tolerance: ±0.05mm, customizable according to requirements)
Alloy Composition	Nickel (Ni): 78-82%, Chromium (Cr): 18-22%, Other Impurities: ≤1.0%
Electrical Resistivity (20°C)	1.09-1.14 μΩ·m (Stable and uniform)
Operating Temperature	Long-term: ≤1150°C; Short-term: ≤1200°C
Tensile Strength	≥650 MPa
Elongation	≥20% (Min)
Magnetic Property	Non-magnetic (Austenitic structure, no magnetic interference)
Surface Treatment	Bright Annealed Surface / Polished Surface (Customizable)
Packaging	Plastic Spool + Moisture-proof Film + Carton Box, or as per customer requirements

Key Advantages (Focus on Drying Oven Adaptability & Stable Electrical Performance)

Stable Electrical Performance, Ensuring Uniform Drying: Adopting the classic Cr20Ni80 alloy formula, it has uniform and stable electrical resistivity and a low resistance temperature coefficient (0.0001/°C). During the long-term operation of drying ovens, the resistance value does not fluctuate significantly with temperature changes, ensuring that the heating power is stable, the internal temperature of the drying oven is uniform, and avoiding uneven drying of materials or local overheating damage, which is crucial for precise drying scenarios such as industrial materials and food processing.
Superior High-Temperature Oxidation Resistance: At high temperatures, the surface forms a dense and stable Cr₂O₃ protective film, which can effectively resist oxidation and corrosion in the high-temperature environment of drying ovens, and has excellent resistance to sulfur-containing atmospheres and carburizing environments. In the 1000℃×100h oxidation weight gain test, the weight gain is only 0.15mg/cm², showing excellent oxidation resistance, which significantly extends the service life of the heating element.
Perfectly Adaptable to Drying Ovens: The 4mm diameter is designed for the heating elements of drying ovens, with appropriate thickness and uniform cross-section, which can be directly wound into heating coils, easy to install and assemble. It can adapt to various types of industrial drying ovens, including box-type drying ovens, tunnel drying ovens, and vacuum drying ovens, meeting the heating needs of different drying scenarios.
Strong Mechanical Strength & Durability: The 4mm round wire has high tensile strength and good ductility, which is not easy to break, deform or sag during installation, transportation and long-term high-temperature operation. It is not prone to brittle fracture after long-term use, and the service life can reach 5000-8000 hours under normal working conditions, which is 30% longer than ordinary nichrome wires, reducing the frequency of maintenance and replacement.
Easy Processing & Versatility: It has good weldability and bendability, can be cut, bent and welded into various shapes according to the structural requirements of drying oven heating elements, and is easy to assemble and install. In addition to drying ovens, it can also be used in other industrial heating equipment, with strong versatility.
High Quality & Standard Compliance: Made of high-purity nickel and chromium raw materials, through advanced smelting, wire drawing and annealing processes, strictly implementing the GB/T1234-2012 national standard for electric heating alloys, and each batch of products undergoes strict quality inspection to ensure stable performance and consistent quality batch by batch.

Application Scenarios (Focus on Drying Ovens)

Our Cr20Ni80 4mm round nichrome wire is mainly designed for the heating elements of various industrial drying ovens, and can also be applied to other industrial heating scenarios that require stable electrical performance, including but not limited to:

Industrial drying ovens: Heating elements for box-type drying ovens, tunnel drying ovens, vacuum drying ovens, and hot air drying ovens, used for drying industrial materials, food, medicine, chemicals, textiles and other products, ensuring uniform and efficient drying.
Drying-related equipment: Heating components for drying machines, dehydrators, and drying tunnels, adapting to the high-temperature and long-term working requirements of drying equipment.
Other industrial heating equipment: Heating elements for small industrial furnaces, drying equipment, and precision heating instruments, utilizing its stable electrical performance and high-temperature durability to provide reliable heating support.

Product Quality Assurance

✅ Raw Material Control: Adopt high-purity nickel (Ni) and chromium (Cr) raw materials, strictly test the alloy composition to ensure that the Ni content is 78-82% and Cr content is 18-22%, laying a foundation for stable electrical performance and oxidation resistance.

✅ Precision Production: Advanced smelting, wire drawing and annealing technology are adopted to ensure uniform diameter, smooth surface, and consistent electrical performance of each section of the wire, with diameter tolerance controlled within ±0.05mm.

✅ Strict Quality Inspection: Each batch of products undergoes resistivity testing, high-temperature oxidation testing, mechanical performance testing and surface quality testing, and only qualified products can leave the factory, meeting ISO 9001 and SGS certification standards.

✅ Customization Service: We can customize the diameter, surface treatment and packaging according to the specific model and heating requirements of your drying oven, providing personalized solutions for your industrial production.

Packaging & Shipping

Packaging: Each spool contains 50m/100m/200m (customizable) of wire, wrapped with moisture-proof plastic film to prevent oxidation and moisture during storage and transportation, and then packed in a thick carton box to avoid collision and damage. The spool size can be customized according to customer needs.
Shipping: Support global shipping, including sea, air and express delivery (DHL, FedEx, UPS, etc.). Stock products can be delivered within 3-5 working days; customized products can be delivered within 7-15 working days, depending on the order quantity and customization requirements.
Custom Packaging: Accept customer-specific packaging requirements, such as printing company logo, product specifications, warning labels and other information, to meet the needs of global distribution and brand promotion.

FAQ (Frequently Asked Questions)

Q1: What is the relationship between Cr20Ni80 and NiCr8020?

A1: Cr20Ni80 is equivalent to NiCr8020 (Nichrome 80/20) alloy grade, with the same alloy composition (78-82% Ni, 18-22% Cr)

and performance, and can be used interchangeably in drying ovens and other industrial heating scenarios.

Q2: Why is this wire suitable for drying ovens?

A2: It has stable electrical performance, low resistance temperature coefficient, and can maintain uniform heating power,

ensuring that the internal temperature of the drying oven is stable and avoiding uneven drying of materials.

At the same time, its superior oxidation resistance and high-temperature durability can

adapt to the long-term high-temperature working environment of drying ovens, with long service life.

Q3: Can the diameter be customized?

A3: Yes, we can customize the diameter within the range of 0.1mm-8.0mm according to the specific installation

and heating power requirements of your drying oven, and adjust the tolerance according to your needs.

Q4: Do you provide samples for testing?

A4: Yes, we can provide samples for your performance testing if in stock, but not for free.

Contact Us

If you have any questions about our Cr20Ni80 4mm Round Nichrome Alloy Wire, or need to customize products according to the model and heating requirements of your drying oven, please feel free to contact us. We will provide you with professional consultation, high-quality products and thoughtful after-sales service, and support global distribution, small-order customization and OEM services.

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