Incoloy 800 (UNS N08800) Seamless Pipes & Tubes
Alloy 800 (Incoloy 800, UNS N08800) is a nickel-iron-chromium alloy with excellent strength and good resistance to oxidation and carburization in high-temperature environments. It is widely used in petrochemical and power generation industries for process heating applications.
Size Range
1/4" NPS to 10" NPS (6.35mm to 273.1mm OD)
Wall Thickness
SCH 5S to SCH 80S
Standards
4 specs
Chemical Composition (% by weight)
| Ni | Cr | Fe | C | Al | Ti | Mn | Si |
|---|---|---|---|---|---|---|---|
| 30.0-35.0 | 19.0-23.0 | 39.5 min | 0.10 max | 0.15-0.60 | 0.15-0.60 | 1.50 max | 1.00 max |
Mechanical Properties (Minimum at Room Temperature)
| Tensile Strength | Yield Strength | Elongation | Hardness |
|---|---|---|---|
| 520 MPa min | 205 MPa min | 30% min | N/A |
Physical Properties - Alloy 800
| Density | Melting Range | Thermal Conductivity | Electrical Resistivity | Specific Heat | Coeff. of Thermal Expansion |
|---|---|---|---|---|---|
| 7.94 g/cm3 | 1357-1385 C | 11.5 W/m-K | 989 nOhm-m | 460 J/kg-K | 14.4 um/m-C |
Corrosion Resistance - Alloy 800
| Property | Value |
|---|---|
| Pitting Resistance (PREN) | N/A |
| Max Service Temp (Oxidizing) | 815 C |
| Intergranular Corrosion | Good |
| Stress Corrosion Cracking | Good in chlorides |
| General Corrosion Rate | Excellent in oxidizing and reducing atmospheres |
| Seawater Resistance | Good |
Equivalent International Grades
| ASTM | Trade | DIN |
|---|---|---|
| N08800 | Incoloy 800 | 1.4876 |
Alloy 800 vs Comparable Grades
| Grade | UNS | Tensile | Yield | PREN | Max Temp |
|---|---|---|---|---|---|
| Alloy 800HTNickel-Iron-Chromium Alloy | N08811 | 520 MPa min | 205 MPa min | N/A | 900 C (continuous) |
| Alloy 600Nickel Alloy | N06600 | 550 MPa min | 240 MPa min | N/A (Ni alloy) | 1175 C |
| Alloy 825Nickel-Iron-Chromium-Molybdenum Alloy | N08825 | 586 MPa min | 241 MPa min | ~31 | 540 C |
Applicable Standards
Applications
Key Advantages of Alloy 800
Alloy 800 Applications by Region
Middle East (UAE, Saudi Arabia, Qatar, Oman, Kuwait)
Standard for petrochemical reformer and heater tubes in UAE and Saudi Arabia refineries.
Europe (Germany, UK, Norway, Netherlands, Italy)
Used in power plants, chemical processing, and petrochemical facilities in Germany, UK, and Netherlands.
United States
Widely used in petrochemical, power generation, and chemical processing industries.
Frequently Asked Questions about Alloy 800 Seamless Pipes
Quick Specifications
1/4" NPS to 10" NPS (6.35mm to 273.1mm OD)
SCH 5S to SCH 80S
Industries Served
Related Grades
Compare With
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Stancor is India's leading manufacturer of Alloy 800 seamless pipes, exporting to UAE, Saudi Arabia, Qatar, Germany, UK, and USA. Contact our sales team for competitive pricing, fast delivery, and full material certification.