Overview
Incoloy 800 HT (High Temperature) is a variant of the Incoloy 800 alloy that is specially heat-treated to enhance its high-temperature strength and resistance to carbide precipitation. It is designed for use in extreme high-temperature environments where improved creep, stress rupture, and oxidation resistance are required.
Chemical Composition (Typical)
Nickel (Ni): 30.0 – 35.0%
Iron (Fe): Balance
Chromium (Cr): 19.0 – 23.0%
Carbon (C): 0.05 – 0.10% (higher than standard 800 for strength)
Manganese (Mn): ≤1.00%
Silicon (Si): ≤1.00%
Titanium (Ti): 0.15 – 0.60%
Aluminum (Al): 0.15 – 0.60%
Key Features
Improved High-Temperature Strength - better creep and stress rupture resistance compared to standard Incoloy 800.
Enhanced Carbide Precipitation Resistance - prevents grain boundary carbide formation that can cause embrittlement.
Excellent Oxidation and Corrosion Resistance at temperatures up to approximately 1100°C (2010°F).
Good Fabricability - can be formed, welded, and machined with proper procedures.
Typical Applications
Heat exchangers and furnace components in petrochemical and chemical processing industries.
Components in nuclear reactors and power plants.
Gas turbines and other high-temperature industrial equipment.
Heat treatment baskets, retorts, and trays.
If you need detailed product data or supply of Incoloy 800 HT, SSM can provide a full range of products and technical support.
