Incoloy 800HT UNS N08811 Nickel Alloy Round Bar
Incoloy 800HT UNS N08811 Nickel Alloy Round Bar Overview
Incoloy 800HT UNS N08811 Nickel Alloy Round Bar is a high temperature nickel-iron-chromium alloy developed for applications requiring improved creep strength, oxidation resistance and structural stability under elevated temperature conditions. Compared with standard Incoloy 800 series alloys, Incoloy 800HT provides controlled chemical composition for enhanced high temperature performance.
SASA ALLOY supplies Incoloy 800HT round bars with customized diameters, lengths, surface finishes and machining services. Products can be supplied with material traceability, MTC and inspection documentation according to customer requirements.
Material Selection Note
Incoloy 800HT selection depends on service temperature, atmosphere conditions, oxidation environment, creep requirements and mechanical loading conditions. Actual material suitability should be confirmed according to the application requirements and applicable specifications.
Product Specifications
| Item | Specification |
|---|---|
| Material | Incoloy 800HT Nickel Alloy |
| UNS Number | N08811 |
| Product Form | Round Bar / Rod |
| Material Family | Nickel Iron Chromium Alloy |
| Standard | ASTM B408 / Customer Specification |
| Diameter | Customized Diameter Available |
| Length | Fixed Length or Cut-to-Length |
| Surface Finish | Bright / Peeled / Ground / Machined |
| Documentation | MTC / EN 10204 3.1 Available When Specified |
Key Features of Incoloy 800HT Alloy Bar
- Enhanced creep strength for elevated temperature service.
- Good oxidation resistance in high temperature environments.
- Good resistance to carburization and industrial furnace atmospheres.
- Stable metallurgical performance during long-term high temperature exposure.
- Suitable for customized machining and fabrication.
Chemical Composition
Incoloy 800HT chemical composition is controlled according to the applicable material specification. The alloy is based on nickel, iron and chromium with controlled additions to improve high temperature performance.
| Element | Technical Function |
|---|---|
| Nickel | Provides corrosion resistance and alloy stability |
| Chromium | Improves oxidation resistance |
| Iron | Provides alloy matrix structure |
| Carbon | Controlled for high temperature strength |
Actual chemical composition shall be confirmed by the applicable product specification and MTC.
Mechanical and High Temperature Properties
| Property | Description |
|---|---|
| High Temperature Strength | Designed for elevated temperature structural applications |
| Creep Resistance | Improved compared with standard alloy conditions |
| Oxidation Resistance | Suitable for selected high temperature environments |
| Mechanical Values | Dependent on product condition and specification |
Production Process
The production of Incoloy 800HT alloy round bar follows controlled manufacturing procedures to achieve stable material performance, accurate dimensions and reliable surface quality.
Typical production flow:
Raw Material Selection → Melting → Forging → Heat Treatment → Surface Processing → Machining → Inspection → Packaging
| Process | Description |
|---|---|
| Melting | Controlled alloy melting to achieve required chemical composition. |
| Forging | Improves internal structure and prepares the material for further processing. |
| Heat Treatment | Performed according to alloy requirements and applicable specification. |
| Surface Finishing | Bright, peeled, ground or machined surfaces available. |
Inspection and Quality Control
SASA ALLOY provides inspection services to verify Incoloy 800HT alloy identification, dimensions and product traceability.
| Inspection | Purpose |
|---|---|
| Chemical Analysis | Verify alloy composition. |
| PMI Test | Confirm material identification when specified. |
| Dimensional Inspection | Check diameter, length and tolerance. |
| Surface Inspection | Verify surface condition and machining quality. |
| MTC / EN 10204 3.1 | Provide material traceability documents. |
Applications of Incoloy 800HT Alloy Bar
Incoloy 800HT round bar is mainly used in high temperature environments where oxidation resistance, carburization resistance and long-term structural stability are required.
- Industrial furnace components.
- Heat treatment equipment parts.
- Petrochemical processing equipment.
- Chemical processing components.
- High temperature mechanical parts.
Machining and Fabrication
Incoloy 800HT is a nickel-based high temperature alloy. Due to its alloy characteristics, machining requires suitable cutting tools, controlled cutting parameters and effective cooling methods.
| Service | Description |
|---|---|
| Cutting | Cut-to-length service according to requirements. |
| Turning | Suitable for customized round components. |
| Grinding | Improves dimensional accuracy and surface finish. |
| Custom Machining | Available according to customer drawings. |
Packaging
SASA ALLOY provides professional export packaging solutions to protect Incoloy 800HT alloy round bars during transportation, storage and handling.
- Protective wrapping to prevent surface damage.
- Wooden cases or pallets suitable for international shipment.
- Product labels including grade, size and heat number information.
- Customized packaging according to customer requirements.



Why Choose SASA ALLOY?
Nickel Alloy Material Expertise
SASA ALLOY specializes in nickel-based alloy products for high temperature and corrosion resistant applications.
Customized Size Supply
Incoloy 800HT round bars can be supplied according to customer requirements, including diameter, length, surface condition and machining needs.
Material Traceability
Heat number tracking and material identification support ensure reliable product traceability.
Quality Documentation
MTC (Mill Test Certificate / 质保书) and EN 10204 3.1 certificates are available when specified.
Inspection Capability
Chemical analysis, PMI, dimensional inspection and surface inspection can be arranged according to customer requirements.
Export Support
Professional packing and technical communication support for international customers.
FAQ
What is Incoloy 800HT alloy bar?
Incoloy 800HT alloy bar is a nickel-iron-chromium alloy round bar designed for high temperature applications requiring improved creep strength and oxidation resistance.
What is the difference between Incoloy 800H and 800HT?
Incoloy 800HT has controlled chemical composition requirements designed for improved high temperature mechanical properties. The suitable grade depends on operating temperature and service requirements.
What applications use Incoloy 800HT round bar?
Typical applications include furnace components, heat treatment equipment, chemical processing equipment and other high temperature industrial components.
Can Incoloy 800HT be machined?
Yes. Incoloy 800HT can be machined with suitable tooling and machining parameters selected according to alloy characteristics.
Can custom sizes be supplied?
Yes. SASA ALLOY can provide customized diameter, length and machining services according to customer drawings or specifications.
Can you provide MTC and EN 10204 3.1?
Yes. Material certificates and inspection documents can be supplied when specified by customers.
What information is needed for quotation?
Please provide grade, diameter, length, quantity, surface requirements, delivery condition and drawings if machining is required.









