ASTM B514 Welded Incoloy 800/800H/800HT Alloy Pipe
- Welded Nickel-Iron-Chromium Alloy Pipe
- Grade: UNS N08120, UNS N08800 (Incoloy 800), UNS N08810 (Incoloy 800H)
- Outside Diameter (OD) : NPS 1/8″-30″ (10.3-762mm)
- Wall Thickness (WT) : SCH5S, 10S, 40S, 80S (1.65-11.1mm)
ASTM B514 Incoloy 800/800H/800HT Welded Nickel-Iron-Chromium Alloy Pipe
Golden Sunbird Metals supplies ASTM B514 welded Incoloy 800, 800H, and 800HT alloy pipe for demanding high-temperature service applications. This welded nickel-iron-chromium alloy pipe is available in grades UNS N08120, UNS N08800, and UNS N08810, with an OD range from NPS 1/8″ to 30″ (10.3–762 mm) and wall thickness from SCH5S to SCH80S (1.65–11.1 mm). Known for excellent resistance to oxidation and carburization, Incoloy 800 series alloys are widely used in heat exchangers, furnace components, chemical and petrochemical equipment, and other elevated-temperature environments. The 800H and 800HT grades are especially valued for improved creep and rupture strength at high temperatures, making them a reliable choice for critical industrial systems. With strict quality control and stable product performance, Golden Sunbird Metals provides a dependable ASTM B514 welded alloy pipe solution for global projects that require durability, heat resistance, and long-term service reliability.
Chemical Composition (wt.%) of ASTM B514 Welded Incoloy 800/800H/800HT Alloy Pipe
| Element | Alloy N08120 (%) | Alloys N08800 and N08810 (%) |
|---|---|---|
| Nickel | 35.0 min, 39.0 max | 30.0 min, 35.0 max |
| Chromium | 23.0 min, 27.0 max | 19.0 min, 23.0 max |
| Iron | Remainder | 39.5 minA |
| Manganese (max) | 1.5 | 1.5 |
| Carbon | 0.02 min, 0.10 max | B |
| Copper (max) | 0.50 | 0.75 |
| Silicon (max) | 1.0 | 1.0 |
| Sulfur (max) | 0.03 | 0.015 |
| Aluminum | 0.40 max | 0.15 min, 0.60 max |
| Titanium | … | 0.15 min, 0.60 max |
| Columbium | 0.20 max | … |
| Molybdenum | 0.4 min, 0.9 max | … |
| Phosphorus (max) | 2.50 | … |
| Tungsten | 0.040 max | … |
| Cobalt (max) | 3.0 | … |
| Nitrogen | 0.15 min, 0.30 max | … |
| Boron (max) | 0.010 | … |
Note:
- A: Iron is determined arithmetically by difference.
- B: For UNS N08800: 0.10 max, For UNS N08810: 0.05 to 0.10.
Mechanical Properties of ASTM B514 Welded Incoloy 800/800H/800HT Alloy Pipe
| Property | UNS N08120 | UNS N08800 | UNS N08810 |
|---|---|---|---|
| Condition (Temper) | Annealed | Annealed | Annealed |
| Tensile Strength (min psi (MPa)) | 90,000 (621) | 75,000 (520) | 65,000 (450) |
| Yield Strength 0.2% Offset (min psi (MPa)) | 40,000 (276) | 30,000 (207) | 25,000 (170) |
| Elongation in 2 in. or 50 mm (min %) | 30 | 30 | 30 |
Features
- ASTM B514 welded nickel-iron-chromium alloy pipe for high-temperature service.
- Available in Incoloy 800, 800H, and 800HT, with 800H and 800HT designed for improved creep and rupture strength at elevated temperatures.
- Incoloy 800HT (UNS N08811) has tighter chemistry control and a higher allowable design stress than 800H (UNS N08810).
- Excellent resistance to oxidation and carburization in high-temperature atmospheres.
- Suitable for welded pipe fabrication with stable performance in long-term elevated-temperature service.
Technical Specifications
| Specification | Value |
| Standard | ASTM B514 Welded Nickel-Iron-Chromium Alloy Pipe (Incoloy 800/800H/800HT Welded Pipe) |
| Grade | UNS N08120, UNS N08800, and UNS N08810 |
| Manufacturing Process | Automatic welding |
| Seam Type | Welded |
| Tube Size | Outside Diameter (OD) Range: 10.3-762mm, Wall Thickness (WT) Range: SCH5S, 10S, 40S, 80S (1.65-11.1mm) |
| Length | 6000-12000mm |
| Delivery Condition | Annealed |
| Inspection Certificate | EN 10204 Type 3.1 (Mill Test Certificate), EN 10204 Type 3.2 (Witness Testing or 3rd Party Inspection) |
| Test | Chemical analysis, Tensile test, Flattening test, Expansion test, Hydrostatic test, Nondestructive testing (NDT), Intergranular corrosion test, Metallographic examination |
Applications
- Steam/hydrocarbon reforming systems, including catalyst tubing, convection tubing, pigtails, outlet manifolds, and quench-system piping.
- Ethylene production units, including cracking tubes, convection tubing, and pigtails.
- Heat-treating furnaces, radiant tubes, muffles, retorts, and furnace fixtures.
- Power generation equipment such as steam superheating tubing and high-temperature heat exchangers.
- Other high-temperature corrosive service in industrial heating and petrochemical processing.
