Products Features
Excellent high-temperature oxidation resistance and carbon penetration resistance
The high chromium content (19-23%) combined with aluminum and titanium elements enables the alloy to form a dense oxide film in oxidizing atmospheres up to 1100°C, providing excellent oxidation and carburization resistance. It is suitable for equipment such as high-temperature furnace tubes and cracking tubes.
Good high-temperature creep rupture strength
Ntrolling the carbon content (0.05-0.10%) and grain size (ASTM 5 or coarser), INCOLOY 800H exhibits high creep rupture strength above 600°C, making it suitable for long-term high-temperature pressure-bearing applications.
Excellent machining and welding properties
It can be cold and hot worked, formed, and welded using conventional processes. Preheating is not required during welding, and post-weld heat treatment is generally unnecessary. It is suitable for manufacturing complex structural components such as reformer tubes, heat exchangers, and manifold systems.
Corrosion resistance over a wide temperature range
T remains stable in high-temperature oxidation, carburizing, and nitriding atmospheres, while also exhibiting good resistance to stress corrosion cracking in aqueous media such as high-temperature and high-pressure water. Its applicable temperature range spans from low temperatures up to approximately 1100°C.
Technical Specifications
Chemical Composition
Physical Properties
|
Property |
Value/Range |
Test Conditions |
|
Density |
7.94 g/cm³ |
Room temperature (20°C) |
|
Melting Point |
1350 - 1400°C |
- |
|
Coefficient of Thermal Expansion (20-100°C) |
14.2 × 10⁻⁶ /K |
- |
Mechanical Properties (Annealed Condition, Typical Values)
|
Property |
Typical Value |
Specification |
|
Tensile Strength |
≥ 450 MPa |
ASTM B408 / B409 |
|
Strength (0.2% Offset) |
≥ 170 MPa |
ASTM B408 / B409 |
|
Elongation |
≥ 30% |
ASTM B408 / B409 |
|
Hardness |
≤ 85 HRB |
- |
High-temperature performance
It exhibits excellent oxidation resistance in oxidizing atmospheres below 1100°C. Continuous use temperature can reach up to 1100°C, while intermittent use is recommended not to exceed 980°C.
Creep Rupture Strength:
Typical Value (Rupture Strength at 1000 Hours):
700°C: Approximately 60 MPa
800°C: Approximately 30 MPa
900°C: Approximately 15 MPa
Arbon and Nitrogen Resistance Properties: With high chromium content combined with aluminum and titanium, it effectively slows down the penetration of carbon and nitrogen, making it suitable for high-temperature equipment in harsh atmospheres such as ethylene cracking furnace tubes and ammonia conversion furnaces.
Pplicable Media:
High-temperature air, combustion flue gases
Carburizing atmospheres (e.g., hydrocarbon pyrolysis)
Nitriding atmospheres
High-temperature and high-pressure water (nuclear reactor coolant)
Sulfur-containing atmospheres (corrosion risk due to pitting should be noted)
Application Fields
-
Petrochemical Industry: Ethylene Cracking Furnace Tubes, Reforming Furnace Tubes, Heat Exchangers, Manifolds
-
Heat Treatment Industry: Jigs and Fixtures, Material Baskets, Mesh Belts, Radiation Tubes
-
Power Generation: Superheater/Reheater Tubes, Nuclear Power Plant Steam Generator Heat Transfer Tubes
-
Industrial Furnaces: Furnace Rollers, Hearth Rollers, Heat Treatment Furnace Components
-
Metallurgy: Annealing Furnace Components, Parts in Galvanizing Baths
-
Automotive: Engine Components, Exhaust Gas Recirculation Systems
-
Aerospace: High-Temperature Pipes, Combustion Chamber Components
-
Hydrogen/Ammonia Production: Reformer Tubes, Heat Exchangers
-
Solid Waste Incineration: Grates, Flue Gas Treatment Equipment
-
High-Temperature Sensors/Sleeves: Thermocouple Protection Tubes
Delivery and Customization
We offer flexible and reliable supply chain solutions to ensure you receive INCOLOY 800H materials that perfectly match your project requirements.
|
Form |
 Sheet/Plate
|
 Bar/Rod
|
 Seamless Pipe
|
 Strip/Sheet Coil
|
 Wire/Wire Rod
|
|---|---|---|---|---|---|
|
Conventional Range |
Thickness: 0.5 - 100 mm |
Diameter Φ6-500mm |
Outer diameter Φ10-300mm |
Thickness: 0.1 – 3.0 mm |
Diameter Φ0.5-10mm |
|
Customization Capability |
Special thick/thin rolling, ultra-wide plates; special surface treatment, fixed-length cutting |
Large-sized forged bars (up to Φ800 mm), special-shaped bars, and various heat treatment conditions |
Large-diameter thick-walled pipes, special alloy composition; Pipe end processing (beveling, fixed length) |
Different hardness conditions, special heat treatments (stabilization treatment, grain size control), acid-washed surfaces, electrolytic polishing, coatings, or special protective films |
Special surface treatment, precision drawing |
Why Choose Us? - Reliable engineering technology. Dependable delivery.
We are not just a supplier, but a trusted materials partner for you in China.
Vertically Integrated Production
Own 20,000㎡ facility with 10+ automated lines (8,000+ tons/year). In-house tooling & die center enables rapid customization and effective cost control - no middleman markup.
Strict Quality Control at Every Stage
Full traceability across key QC checkpoints throughout production. 100% compliant with ASTM/ASME, EN, and GB standards. Material test reports available with every shipment.
Reliable Delivery & Export Packaging
10+ years exporting to Europe, North America, Southeast Asia & Middle East with waterproof and anti-rust protection, combined with flexible shipping options ensures safe and on-time arrival.
Sample Validation Before Mass Production
We provide free samples for quality verification, allowing you to place bulk orders only after approval. We ensure consistency from sample to mass production by accurate dimensional measurement and transparent manufacturing.
FAQ
Q: What are the main advantages of INCOLOY 800H?
Q: What heat treatment is required for INCOLOY 800H?
Q: What is the maximum operating temperature?
Q: What are the differences between INCOLOY 800H and 800, 800HT?
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