Premium Incoloy 800 High Temperature Alloy Wire for Heat Exchanger and Furnace Applications

What is the Incoloy 800 wire？

Incoloy 800 wire is a versatile nickel-iron-chromium superalloy that conforms to various industry standards, including ASTM B408, ASTM B409, AMS 5766, and DIN 2.4858. It is available in multiple forms such as round wire, flat wire, spooled wire, and custom profiles, with a diameter range from 0.1 mm to 12.7 mm, and can be customized upon request. The wire features a bright annealed, pickled, or polished surface finish, depending on your requirements. It is designed for use in extreme temperatures, with an operating range of -200°C to 800°C, while delivering optimal performance in the range of 540–760°C. Incoloy 800 wire is also certified for sour service environments, meeting the standards of NACE MR-0175.

Key Characteristics of Incoloy 800 Wire

High-Temperature Stability:Incoloy 800 wire maintains excellent tensile strength and creep resistance at temperatures up to 800°C, thanks to its stable austenitic structure. It is optimal for high-temperature applications, offering long-term reliability.

Oxidation & Carburization Resistance:The alloy forms a protective chromium oxide (Cr₂O₃) layer at elevated temperatures, effectively resisting scaling and carbon absorption. This provides long-lasting protection in harsh conditions.

Corrosion Resistance:Incoloy 800 wire demonstrates outstanding resistance to sulfuric acid, nitric acid, alkaline solutions, and chloride-induced stress corrosion cracking, making it ideal for industries that deal with aggressive chemicals.

Mechanical Strength:With a typical tensile strength of 500-700 MPa in the annealed condition and an elongation exceeding 30%, Incoloy 800 wire provides both durability and flexibility, allowing it to be easily fabricated and used in various applications.

Fabrication Flexibility:This wire is easily cold-worked, welded (TIG, MIG), and machined using standard tooling, offering excellent versatility in fabrication.

Thermal Cycling Resistance:With a low coefficient of thermal expansion (14.4 μm/m·°C at 20–100°C), Incoloy 800 wire minimizes distortion under cyclic heating, ensuring its structural integrity over time.

Manufacturing Process and Technology

Melting:Vacuum induction melting (VIM) ensures precise control over impurities, such as sulfur and phosphorus, delivering high-quality material with optimal composition.

Hot/Cold Working:Hot-rolled billets are cold-drawn through diamond dies, achieving tight dimensional tolerances (±0.01 mm), ensuring consistency and precision in all forms.

Heat Treatment:The material undergoes solution annealing at temperatures between 980-1030°C followed by rapid quenching to stabilize the microstructure, ensuring optimal mechanical properties.

Surface Treatment:Bright annealing in a hydrogen atmosphere prevents oxidation during processing, resulting in an enhanced surface finish that improves performance in corrosive environments.

Quality Control:We perform rigorous quality checks using spectrochemical analysis for composition verification, non-destructive testing (eddy current) for surface defects, and mechanical testing (hardness, tensile) in accordance with ASTM E8/E21 standards.

Performance and Metallurgical Principles

Solid Solution Strengthening:The high nickel content stabilizes the FCC austenitic matrix, enhancing ductility and fracture toughness, making Incoloy 800 wire resistant to cracking under stress.

Chromium Oxide Layer:Chromium reacts with oxygen to form a self-healing Cr₂O₃ oxide layer, continuously protecting the alloy from oxidation even in harsh environments.

Precipitation Hardening:Controlled additions of aluminum (Al) and titanium (Ti) promote the formation of fine (Ti, Al)C carbides at grain boundaries, which improves creep resistance and overall strength at elevated temperatures.

Thermodynamic Stability:The Ni-Fe-Cr ternary system minimizes sigma-phase embrittlement and ensures phase stability during prolonged exposure to high temperatures, maintaining the alloy’s structural integrity.

Applications of Incoloy 800 Wire

Incoloy 800 wire is widely used in industries requiring reliable performance under extreme conditions, including:

Petrochemical Industry:Used in wire mesh for catalyst grids, furnace internals, and reformer tubes in hydrogen sulfide environments.

Power Generation:Ideal for applications such as heating element windings, thermocouple sheaths, and boiler tube supports in coal-fired and nuclear power plants.

Aerospace:Commonly used in combustion chamber liners, exhaust seals, and afterburner components that must withstand extreme thermal and mechanical stresses.

Heat Treatment:Used in basket fixtures and conveyor belts for annealing and carburizing furnaces, ensuring durability under high heat.

Chemical Processing:Perfect for fasteners, springs, and gaskets in nitric acid production equipment due to its resistance to highly corrosive environments.

Our Advantage

1. Market LeadershipWe are ranked among the top 5 in China’s nonferrous metal industry, providing superior Incoloy 800 wire for diverse industrial applications.

2. Flexible ProductsWith thousands of product specifications available, we can meet the unique requirements of every customer.

3. Low MOQWe support low minimum order quantities, allowing you to order just what you need.

4. Fast Production & DeliveryOur efficient production process ensures short lead times and timely delivery.

5. Professional Inspection EquipmentBefore delivery, we use advanced spectrometers, tensile testers, and other equipment to thoroughly inspect every batch.

6. Expert Sales TeamOur team responds quickly to customer inquiries and provides expert recommendations to ensure you choose the best product for your application.

7. Reliable PackagingWe offer customizable packaging solutions, including wooden crates, to ensure the safe delivery of your Incoloy 800 wire.

8. Various Payment OptionsWe provide a variety of convenient payment methods for your ease.

9. Long-Term Customer RelationshipsMany of our customers have partnered with us for over 7 years, a testament to our reliable service and quality products.

10. Industry RecognitionWe are highly recognized by platforms like Google and have received multiple industry awards for our commitment to excellence.

CHANGZHOU DLX ALLOY CO, LTD was established in 2002 and has got ISO9001 International Quality Management System Certificate and SGS Certificate. Our factory is professional in researching and producing special alloy material. From melting, drawing, heat treatment, finishing and testing .We offer nickel based, copper-based, and iron-based alloys, including super alloy, welding materials, anti-corrosion alloy, Precision Alloy , FeCrAl alloy, NiCr alloy, CuNi alloy, thermocouple and etc, in the form of wire, strip, ribbon, bar, tube, plate.

Our 12,000㎡ factory is equipped with complete capabilities for research, production, testing, and packaging. We strictly adhere to ISO 9001 standards in our production processes, with an annual output of 1,200 tons. This ensures that we meet both quantity and quality demands. Furthermore, all products undergo rigorous simulated environment testing including high temperature, high pressure, and corrosion tests before being dispatched, ensuring they meet customer specifications. We also provide chemical analysis reports for every FeCrAl alloy, NiCr alloy, and other products purchased.

For all our clients, we offer timely and multilingual after-sales support and technical consulting, helping you resolve any issues swiftly and efficiently.

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FAQ

Q1: How can I contact your company?You can reach us by phone, email, or through our website’s contact form. We are available 24/7 to assist you with any inquiries.

Q2: Do you offer product samples?Yes, we offer customized samples of Incoloy 800 wire. Please contact us for further details.

Q3: What is the minimum order quantity (MOQ)?Our MOQ is flexible. We can adjust the order quantity based on your specific needs. Please contact us for more information.

Q4: What certifications does your company hold?Our Incoloy 800 wire complies with ASTM B408, ASTM B409, AMS 5766, and is NACE MR-0175 certified for sour service environments.

Q5: How do I place an order?To place an order, simply contact us via email, phone, or our website. Our team will guide you through the process and provide a professional quote.