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For high-temperature equipment operating under continuous thermal exposure, material selection often depends on long-term strength retention, oxidation resistance, and stability rather than only maximum temperature capability.
Incoloy 800HT Alloy is a High Temperature Nickel Alloy designed for these conditions. With its controlled composition and enhanced elevated-temperature properties, UNS N08811 Alloy is widely considered when engineers require reliable performance against creep, carburization, and thermal degradation.
Composition | Fe | C | Si | Mg | P | S | Cr | Ni | Cu | Ti | Al |
Min | 39.5 | 0.06 | \ | \ | \ | \ | 19 | 30 | \ | 0.25 | 0.25 |
Max | \ | 0.1 | 1 | 1.5 | 0.04 | 0.015 | 23 | 35 | 0.75 | 0.6 | 0.6 |
Rigidity | Tensile strength | Yield strength | Elongation |
≤192HBW | ≥450MPa | ≥170MPa | ≥35% |
Density | Melting points | Specific heat | Magnetism |
8.0g/cm3 | 1350-1400℃ | 455J/(Kg.℃） | \ |
1. Designed for Long-Term High Temperature Service
The primary advantage of Incoloy 800HT Alloy is its ability to maintain strength and stability during prolonged exposure to high temperatures. The controlled chemical composition provides improved creep resistance and stress rupture performance, making it suitable for components operating under constant thermal loads.
Compared with conventional stainless steels, Heat Resistant Nickel Alloy materials such as UNS N08811 offer better resistance to thermal degradation in high-temperature industrial environments.
Key performance characteristics include:
High Temperature Strength Alloy performance
Excellent creep resistance for long-term service
Stress rupture resistance under elevated temperatures
Oxidation resistant capability
Carburization resistance in carbon-rich environments
Good thermal stability for continuous operation
2. Resistance to Oxidation and High Temperature Corrosion
For petrochemical and thermal processing equipment, material failure is often caused by oxidation, carburization, or surface degradation rather than immediate mechanical failure.
Incoloy 800HT Nickel Alloy provides reliable resistance against these conditions, especially in environments involving:
High-temperature gases
Hydrocarbon processing atmospheres
Steam-containing environments
Thermal cycling conditions
This makes UNS N08811 Alloy a preferred choice for equipment requiring long service life and reduced maintenance frequency.
| Product Form | Available Supply | Typical Standards / Conditions |
Tube / Pipe | Incoloy 800HT Tube, Seamless Tube, Welded Tube, Pipe | ASTM B163, ASTM B407, ASME SB163, ASME SB407 |
Plate / Sheet | Incoloy 800HT Plate, Sheet, Strip | ASTM B409 |
Bar / Rod | Incoloy 800HT Bar, Round Bar, Rod | ASTM B408 |
Fabricated Products | Custom Fabricated Parts, Machined Components | According to customer drawings |
Processing Options | Solution Annealed, Heat Treated, Precision Machined | Customized requirements |
Mono Group can supply ASTM B163 Incoloy 800HT Tube, ASTM B407 Incoloy 800HT Pipe, and other UNS N08811 Material products based on application requirements.
1. Heat Exchanger and Thermal Processing Equipment
In heat transfer systems, materials need to withstand repeated heating cycles while maintaining corrosion resistance.
Incoloy 800HT Tube is commonly selected for:
Heat exchanger tubes
High temperature process piping
Thermal circulation systems
Industrial heating equipment
Its combination of creep resistance and oxidation resistance helps improve equipment reliability during continuous operation.
2. Petrochemical and Chemical Processing
The petrochemical industry represents one of the largest application areas for High Temperature Nickel Alloy materials.
Typical applications include:
Steam reforming equipment
Ethylene cracking furnace components
Hydrocarbon processing units
High temperature reaction systems
For these environments, Incoloy 800HT for Petrochemical Industry applications are valued because of their resistance to carburization and long-term thermal exposure.
3. Industrial Furnace Components
Industrial furnace components require materials that can maintain dimensional stability under repeated heating and cooling cycles.
Common uses include:
Furnace tubes
Heat treatment equipment
High-temperature fixtures
Process furnace components
The combination of Heat Resistant Nickel Alloy properties and mechanical stability makes Incoloy 800HT Alloy suitable for these demanding applications.
| Item | Details |
Material Grade | Incoloy 800HT / Alloy 800HT |
UNS Number | UNS N08811 |
Material Type | Nickel Iron Chromium Alloy |
Main Characteristics | High temperature strength, oxidation resistance, carburization resistance |
Tube Standards | ASTM B163 / ASTM B407 |
Plate Standard | ASTM B409 |
Bar Standard | ASTM B408 |
Available Forms | Tube, Pipe, Plate, Sheet, Bar, Rod |
Manufacturing Options | Heat treated, solution annealed, customized dimensions |
When sourcing Incoloy 800HT Supplier options, buyers usually focus on more than material availability. Important factors include:
Correct ASTM / ASME specification compliance
Tube dimensional accuracy and tolerance control
Heat treatment condition
Material traceability and certification
Experience supplying industrial high-temperature applications
For projects involving Incoloy 800HT Heat Exchanger Tube, Steam Reforming Equipment, or High Temperature Process Equipment, selecting a supplier with stable production capability is essential.
Q: What is the difference between Incoloy 800HT and Incoloy 800?
A: Incoloy 800HT Alloy is a modified version of the 800 series with controlled carbon content and optimized composition to provide improved high-temperature strength, creep resistance, and stress rupture performance.
Q: What applications require Incoloy 800HT Tube?
A: Incoloy 800HT Tube is commonly used in heat exchangers, steam reforming units, ethylene cracking furnaces, petrochemical equipment, and other high-temperature process systems.
Q: What standards are available for Incoloy 800HT Pipe?
A: Common specifications include ASTM B163 Incoloy 800HT Tube and ASTM B407 Incoloy 800HT Pipe, depending on product type and application requirements.
Q: Is UNS N08811 suitable for continuous high-temperature service?
A: Yes. UNS N08811 Alloy is specifically designed for applications requiring long-term exposure to elevated temperatures with good creep resistance and oxidation resistance.
Q: Can Mono Group supply customized Incoloy 800HT products?
A: Yes. Mono Group can provide Incoloy 800HT Tube, Pipe, Plate, Sheet and Bar with customized dimensions, processing conditions, and required material documentation.
Mono Group supplies Incoloy 800HT Alloy products for customers requiring reliable performance in high-temperature industrial environments. Our supply range covers UNS N08811 Tube, Pipe, Plate and Bar, with support for ASTM specifications, customized dimensions, and engineering requirements.
With experience supplying nickel alloys and heat-resistant materials, Mono Group helps customers select suitable solutions for applications including petrochemical equipment, heat exchangers, furnace systems, and high-temperature process components.
For inquiries about Incoloy 800HT Tube Supplier, ASTM B163 Incoloy 800HT Tube, or UNS N08811 Material, contact Mono Group for technical support and quotation.
