Description
08810 refers to Incoloy Alloy 800H (UNS N08810), a nickel-iron-chromium alloy engineered for high-temperature applications requiring exceptional mechanical strength and corrosion resistance. Alloy 800H is particularly valued in industries such as petrochemical, power generation, and heat treatment for its ability to retain properties in aggressive, elevated-temperature environments.
Features:
- Excellent high-temperature strength and stability, making it suitable for service up to about 1100°C (2010°F).
- Outstanding resistance to oxidation, carburization, and nitriding at elevated temperatures, critical for components in furnaces and chemical processing.
- Maintains ductility after prolonged exposure to high temperatures, reducing the risk of material failure during thermal cycling.
- Controlled carbon content (0.05–0.10%) enhances creep and rupture strength, essential for pressure-retaining parts.
- Superior resistance to chloride stress-corrosion cracking, supporting reliability in harsh chemical environments.
- Good weldability and formability, enabling versatile fabrication of bars, rods, tubes, sheets, and plates.
- High nickel (30–35%) and chromium (19–23%) levels protect against a wide array of corrosive media.
- Commonly used in furnace components, heat exchangers, petrochemical reformation tubes, superheater and reheater tubing, and sheathing for electrical heating elements.
Specifications:
- UNS Number: N08810
- Alloy Type: Incoloy 800H (austenitic nickel-iron-chromium)
- Chemical Composition (typical, in %): Nickel 30.00–35.00, Chromium 19.00–23.00, Iron 39.5 min, Carbon 0.05–0.10, Aluminum 0.15–0.60, Titanium 0.15–0.60, Manganese 1.50 max, Silicon 1.00 max, Copper 0.75 max, Sulfur 0.015 max.
- Mechanical Properties (room temperature, min values): Tensile strength 65 ksi (450 MPa), Yield strength 25 ksi (170 MPa), Elongation 30%.
- ASTM Grain Size: 5 or coarser.
- Forms Available: Bars, rods, bolts, screws, studs, threaded rods, nuts, washers, pins, plates, sheets, tubes, and pipes.
- Industry Standards: Compliant with ASTM B408 (bars and rods), ASTM A336, and others as specified.
- What’s Included in the Standard Package:
- Alloy 800H/UNS N08810 product in ordered form (e.g., bars, rods, tubes, or plates) and finish (hot-worked, cold-worked, annealed) suitable for the intended application.
- Mill test reports verifying chemical composition and mechanical properties per applicable ASTM standard.
- Certificates of compliance and traceability documentation.
- Optional: Packaging to suit international transit, end-use certifications, and custom cutting or machining, if specified at the time of order.
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