China Incoloy series alloys are divided into three kinds, Incoloy800, Incoloy800H and Incoloy800AT, which are nickel-iron-chromium alloys resistant to high-temperature oxidation and high-temperature carburisation.
Incoloy series alloys are divided into three kinds, Incoloy800, Incoloy800H, Incoloy800AT, the alloy is resistant to high-temperature oxidation and high-temperature carburisation nickel-iron-chromium alloy. The alloy has a nickel content of 32% and is thus resistant to chloride stress corrosion cracking and insensitive to precipitation of the σ phase. The alloy has excellent resistance to homogeneous corrosion. In the solid solution treated state, the 800H and 800AT alloys have excellent resistance to creep and stress cracking. The three different 800 alloys mentioned above are listed as materials of construction in the ASME Boiler and Pressure Vessel Code for Volume I Power Station Boilers, Volume III Nuclear Power Boilers, and Volume VIII Non-Fire Pressure Vessels.
The 800 and 800H, 800AT alloys are chemically identical except for differences in carbon content and the presence of up to 1% aluminium and titanium in the 800AT alloy. 800 alloys are generally used in temperature environments up to about 593°C. The 800H and 800AT alloys are typically used in temperature environments up to about 593°C where higher creep and stress cracking resistance is required.
