Incoloy 800H Strips

Incoloy 800H Strip

Other common names:
Alloy 800 Strip, Alloy 800H Strip/Ni-Fe-Cr Alloy Strip

Incoloy 800H strip Properties:

Incoloy 800 Strip, 800H Strip, and 800HT Strip are nickel-iron-chromium alloys Strips with good strength and excellent resistance to oxidation and carburization in high-temperature exposure. Incoloy 800H/HT alloy Strip was intended for high temperature structural applications. The nickel content makes the alloys highly resistant to both chloride stress-corrosion cracking and to embrittlement from precipitation of sigma phase. The general corrosion resistance is excellent. In the solution annealed condition, alloys 800H Strip and 800HT Strip have superior creep and stress rupture properties.

Incoloy 800 Strip is primarily used in applications with temperatures up to 1100° F, where alloys 800H Strip and 800HT Strip are normally used in temperatures above 1100° F and where resistance to creep and rupture is required. The chemical balance allows the nickel steel alloy to exhibit excellent resistance to carburization, oxidation and nitriding atmospheres. Incoloy 800HT strip will not become embrittled even after long periods of usage in the 1200-1600° F range where many stainless steels become brittle.

These nickel alloy strips are identical except for the higher level of carbon in alloy 800H, and the addition of up to 1.20 percent aluminum and titanium in alloy 800HT strip. Incoloy 800 strip was the first of these alloys strips and it was slightly modified into Incoloy 800H strips. This modification was to control carbon (.05-.10%) and grain size to optimize stress rupture properties. Incoloy 800HT strip has further modifications to the combined titanium and aluminum levels (.85-1.20%) to ensure optimum high temperature properties.

The nickel alloy is dual certified (800H/HT) and combines the properties of both forms.

• Ethylene furnace quench boilers
• Hydrocarbon cracking
• Valves, fittings and other components exposed to corrosive attack from 1100-1800° F
• Industrial furnaces
• Heat-treating equipment
• Chemical and petrochemical processing
• Super-heater and re-heaters in power plants
• Pressure vessels
• Heat exchangers