Incoloy 800HT
800H variant with controlled combined aluminium + titanium for optimum high-temperature rupture strength.
Material overview
Incoloy 800HT belongs to the Nickel-Based Alloys section of the catalog. 800H variant with controlled combined aluminium + titanium for optimum high-temperature rupture strength. The technical review record highlights Al + Ti controlled to 0.85-1.2% and highest creep-rupture strength in the 800 family. Listed applications include Reformer and ethylene furnace components, high-temperature headers, and industrial furnace parts. The dataset currently includes 12 property records covering chemical composition, mechanical properties, and physical properties. Standards and product forms associated with the grade include B409 and GB/T 15007 and Seamless Pipe / Tube and Forged Product. Final material properties and delivery conditions must be verified against the applicable specification and inspection documents.
Key characteristics
- Al + Ti controlled to 0.85-1.2%
- highest creep-rupture strength in the 800 family
Typical applications
- Reformer and ethylene furnace components
- high-temperature headers
- industrial furnace parts
Grade names and equivalents
Technical properties
Typical values are for reference only. Final chemistry, mechanical properties, heat treatment, dimensions, inspection, and documentation are confirmed against the applicable specification and MTC/COA before order acceptance.
Chemical composition
| Property | Value | Unit | Condition / standard |
|---|---|---|---|
| Ni | 30.0-35.0 | wt% | Typical value |
| Cr | 19.0-23.0 | wt% | Typical value |
| Fe | 39.5 min | wt% | Typical value |
| C | 0.06-0.10 | wt% | Typical value |
| Al+Ti | 0.85-1.20 | wt% | Typical value |
| Mn | 1.5 max | wt% | Typical value |
| Si | 1.0 max | wt% | Typical value |
| Cu | 0.75 max | wt% | Typical value |
Mechanical properties
| Property | Value | Unit | Condition / standard |
|---|---|---|---|
| Tensile strength | min 450 | MPa | Annealed |
| Yield strength 0.2% | min 170 | MPa | Annealed |
| Elongation | min 30 | % | Annealed |
Physical properties
| Property | Value | Unit | Condition / standard |
|---|---|---|---|
| Density | 7.94 | g/cm3 | Typical |
Standards and specifications
Forms, applications, and capabilities
Product forms
- Seamless Pipe / Tube
- Product form
Industries
- Petrochemical & Chemical
- Industry
- Industry
Capabilities
- Vacuum Induction Melting
- Capability
- Capability
- Heat Treatment
- Nondestructive & Laboratory Testing