ANSI B16.5 Pipe Fittings ASTM B564 Alloy 800HT / UNS N08811 Concentric Reducer

Another member of the 800 alloy family is Incoloy® 800HT. Also sold as Nickel Alloy 800HT, this nickel-iron-chromium alloy, has many of the same characteristics of other members of the 800 alloy grouping. Incoloy 800HT has roughly the same chemical composition as Incoloy 800H, differing only slightly in carbon, aluminum, and titanium levels.

Incoloy 800HT is known for many of the same outstanding characteristics as Incoloy 800H including:

• Excellent resistance to oxidation, sulfidation, and carburization
• Higher creep and rupture properties for high temperature situations above 1100°F (600°C)
• Resistant to high temperature corrosion and prolonged exposure
• Readily machined by standard methods
• Resistance to aqueous corrosion at moderate temperatures

Alloy 800/800H/800HT Equivalent Standard

Alloy 800/800H/800HT Chemical Composition

Alloy 800HT Mechanical Properties

Applications

• Hydrocarbon cracking
• Industrial furnace and boiler components and equipment
• Equipment for Heat-Treating
• Pressure vessels and heat exchangers
• Chemical and Petrochemical processing

Penetration Test