Incoloy 800 (UNS N08800) Seamless Pipes & Tubes Manufacturer & Supplier
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.
UNS: N08800 | Category: Nickel-Iron-Chromium Alloy | Werkstoff Nr: 1.4876 | EN Name: X10NiCrAlTi32-20
Alloy 800 — Also Known As
Alloy 800 is also commonly known as Alloy 800, 800 Alloy, Incoloy 800 (UNS N08800) Seamless Pipes & Tubes, N08800, UNS N08800, 1.4876, Werkstoff 1.4876, W.Nr 1.4876, X10NiCrAlTi32-20, incoloy 800.
Alloy 800 — Applicable Standards & Specifications
Alloy 800 is commonly supplied to ASTM B407, ASME SB407, ASTM B163, ASME SB163, ASTM B829, ASME SB829.
Size Range
Outer Diameter: 1/4" NPS to 10" NPS (6.35mm to 273.1mm OD)
Wall Thickness: SCH 5S to SCH 80S
Chemical Composition (%)
| 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
- Tensile Strength
- 520 MPa min
- Yield Strength
- 205 MPa min
- Elongation
- 30% min
- Hardness
- N/A
Physical Properties
- Density
- 7.94 g/cm3
- Melting Range
- 1357-1385 C
- Thermal Conductivity
- 11.5 W/m-K
- Electrical Resistivity
- 989 nOhm-m
- Specific Heat
- 460 J/kg-K
- Coeff. of Thermal Expansion
- 14.4 um/m-C
Corrosion Resistance
- 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
Applicable Standards
- ASTM B407 / ASME SB407
- ASTM B163 / ASME SB163
- ASTM B514 / ASME SB514
- DIN 17751
Applications
- Petrochemical heater and reformer tubing
- Heat exchangers in aggressive media
- Industrial furnace components
- Nitric acid production
- Ethylene cracker tubes
- Power plant superheater tubes
Industries Served
- Petrochemical
- Power Generation
- Chemical Processing
- Fertilizer
- Heat Treatment
Key Advantages
- Excellent high-temperature strength and oxidation resistance
- Good resistance to carburization and nitridation
- Economical alternative to higher-nickel alloys
- Versatile for both oxidizing and reducing atmospheres
- Widely available and well-characterized
Equivalent Grades
- ASTM
- N08800
- Trade
- Incoloy 800
- DIN
- 1.4876