Seamless Incoloy 800 Pipe

Seamless Incoloy 800 Pipe – High-Temperature Nickel Alloy Pipe for Oxidation and Creep Resistance

ASeamless Incoloy 800 Pipe is a high-performance nickel-iron-chromium alloy pipe designed for service in high-temperature and corrosive environments. Manufactured from a solid alloy billet through hot extrusion or precision cold drawing, seamless pipes contain no longitudinal weld seams, ensuring consistent metallurgical properties and superior structural integrity.

Incoloy Alloy 800 (UNS N08800 / EN 1.4876) is an austenitic nickel-iron-chromium alloy known for its excellent oxidation resistance, carburization resistance, and high-temperature strength.

The carefully balanced chemical composition of nickel, chromium, and iron provides long-term metallurgical stability during continuous exposure to temperatures up to 1100°F (593°C). As a result, Alloy 800 seamless pipes are widely used in thermal processing equipment, petrochemical plants, and power generation systems where both mechanical strength and corrosion resistance are required.

Key Technical Advantages of Incoloy 800 Seamless Pipe

UsingSeamless Incoloy 800 Pipe (UNS N08800) in high-temperature systems offers several important engineering advantages.

Excellent Creep and Rupture Strength

Alloy 800 maintains high mechanical strength and resistance to creep deformation under prolonged exposure to high stress and elevated temperatures, making it suitable for critical thermal applications.

Outstanding Oxidation and Carburization Resistance

Thehigh chromium and nickel content forms a stable protective oxide layer on the material surface, providing resistance to oxidation, scaling, and carburization in industrial furnace atmospheres.

Resistance to Aqueous Corrosion

Although primarily designed for high-temperature environments, Incoloy 800 alloy also provides moderate resistance to aqueous corrosion and chloride-induced stress corrosion cracking (SCC).

Excellent Thermal Fatigue Resistance

Theseamless pipe structure eliminates weld zones, which are often susceptible to thermal fatigue. This allows the pipe to withstand repeated thermal cycling without cracking or mechanical degradation.

Good Fabricability and Weldability

Alloy 800 seamless tubing demonstrates excellent fabrication characteristics, including compatibility with standard welding methods such as GTAW (TIG) and GMAW (MIG), with strong resistance to hot cracking.

Product Specifications and Data

To provide a comprehensive overview of this high-performance material, here are the detailed technical specifications and performance data for Incoloy 800.

Table 1: Chemical Composition of Incoloy 800 Under ASTM B407

The composition of Incoloy 800 is carefully balanced to achieve its superior high-temperature strength and oxidation resistance.

Table 2: Typical Mechanical Properties of Incoloy 800 Under ASTM B407

Incoloy 800 is specifically designed to maintain its strength and shape in high-stress, high-temperature environments.

Table 3: Typical Physical Properties of Incoloy 800 Under ASTM B407

These physical properties highlight the material's ability to perform reliably under a wide range of conditions.

Table 4: The Standard of Seamless Incoloy 800HT Pipe ASTM B407 Size Tolerance Chart :

Cold-Finished Pipes and Tubes:

Typical Applications of Alloy 800 Seamless Pipe

Due to its excellent performance in high-temperature environments, Incoloy 800 seamless pipes are widely used in industries requiring thermal stability and corrosion resistance.

Petrochemical and Chemical Processing

• Heat exchanger tubing
• Furnace components
• Process piping systems
• Burner assemblies

Power Generation Industry

• Superheater and reheater tubing
• High-temperature boiler components
• Nuclear and fossil fuel power plant systems

Industrial Heat Treatment Equipment

• Radiant tubes
• Retorts and muffles
• Heating elements and furnace piping

Waste Incineration and Environmental Systems

• Combustion chamber components
• Flue gas treatment piping
• High-temperature corrosion-resistant structures

Quality Assurance and International Standards

AllSeamless Incoloy 800 Pipes are manufactured and tested in strict accordance with ASTM B407 / ASME SB407 and relevant international quality standards.