Jul.2026 01
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Incoloy 800H: Long-Term Stability in High-Temperature Environments
Introduction
Incoloy 800H is an essential alloy for maintaining operational safety in extreme heat environments. By combining advanced material performance with our specialized Chinese manufacturing capabilities—including stringent quality control and flexible customization—we help global clients optimize their industrial furnace longevity and performance.
Details
Incoloy 800H is a controlled-composition, nickel-iron-chromium alloy specifically engineered for high-temperature service. With its exceptional creep-rupture strength and resistance to oxidation, carburization, and sulfidation, it remains the preferred material for critical industrial furnace components.

Performance Characteristics of Incoloy 800H

Incoloy 800H (UNS N08810) is favored in high-temperature applications due to its carbon content, which is carefully controlled to optimize creep and rupture properties. Below is a comparison of its performance under typical thermal conditions.

Property Incoloy 800H  Carbon Steel  Standard Stainless (310S) 
Max Service Temp  Up to 1100°C  Up to 400°C  Up to 1050°C 
Creep Strength  Exceptional  Low Moderate 
Oxidation Resistance  High Poor Good
Corrosion Resistance  Excellent  Minimal  Moderate

Key Applications in High-Temperature Engineering

The alloy’s ability to maintain structural integrity under thermal stress makes it essential for:
  • Industrial Furnace Components: Including radiant tubes, muffles, and heat treatment baskets.
  • Petrochemical Processing: Ideal for steam methane reforming, ethylene cracking furnaces, and hydro-treating units.

Our Manufacturing & Supply Capabilities

As a specialized Chinese manufacturer and exporter, we provide comprehensive material solutions for global projects:
  • Diverse Product Forms: We supply Incoloy 800H in plates, coils, seamless pipes, and custom-engineered fittings.
  • Quality Control: All production adheres to international standards (ASTM, ASME, DIN), backed by rigorous non-destructive testing (NDT), including ultrasonic and radiographic inspection.
  • Customization: We offer tailored sizes and chemical compositions to meet specific operational requirements for high-pressure vessels and heat exchangers.
  • Global Export Expertise: From professional logistics to precise customs documentation, we ensure your high-performance alloys arrive on schedule.

FAQ

What is the main advantage of Incoloy 800H over 800?
800H has a higher carbon content (0.05%–0.10%), which provides significantly improved creep-rupture strength at elevated temperatures.
Can you provide mill test certificates for Incoloy 800H?
Yes, every shipment includes full material traceability and certified Mill Test Reports (MTR) confirming chemical and mechanical properties.
What are your lead times for exported Incoloy 800H pipes?
Depending on quantity and specifications, standard production typically ranges from 4 to 8 weeks, with expedited options for critical projects.
Do you offer custom fabrication for furnace components?
Absolutely. We offer integrated services including cutting, welding, and machining to transform plates and pipes into finished furnace components.
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