Heat-Resistant Alloys
Unlike CRA, which are mostly selected for
their capacity to resist corrosion in a given environment,
most HRA need to play a dual role.
Namely, besides the capacity to withstand the corrosive
aggressiveness of the environment, HRA
also need to keep significant strength at high temperatures.
Near and above 1000 C (1830 F),
alloy selection is dominated by how strong the
alloy is in this temperature range. Table 1 shows
a short compilation of the most common HRA
engineering nickel alloys and a brief description
of their application.