Incoloy 800HT Elbows for Equipment for Heat-Treating and Pressure vessels and heat exchangers
Used in chemical and petroleum processing, in power plants for superheater and reheater tubing, in industrial furnaces, and for heat treating equipment.
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 and 800HT have superior creep and stress rupture properties. Cooling after hot working should be as quick as possible, avoiding extensive time at temperatures between 1000¡ãF and 1400¡ãF. Cold working should be performed on material in the annealed condition. Depending on the amount of strain induced by cold work during fabrication, an additional stress relieving or annealing heat treatment may be necessary.