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HAYNES® 214® alloy provides
outstanding resistance to corrosion
in high-temperature, chlorinecontaminated oxidizing environments. This is particularly evident for exposures at temperatures at or above 1800°F (980°C), where the formation of the Al2O3-rich protective oxide scale
is favored. Test results are shown for
400 hour exposures in a flowing gas mixture of Ar + 20% O2 + 0.25% Cl2.
Note that the metal loss exhibited
by 214 alloy is very low compared to
other alloys tested.
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| HAYNES 214 alloy has also been
tested in environments with higher
levels of chlorine contamination.
The photomicrographs to the
right are for samples exposed to
a mixture of air and 2% chlorine
for 50 hours at 1830°F (1000°C).
Once again, the black area at the
top of each photograph represents
actual metal loss experience. Alloy
601 exhibited 2.0 Mils (51 μm) of
metal loss, and an average internal
penetration of 6.0 Mils (152 μm),
for a total average metal affected of
8.0 Mils (203 μm). Results for 214
alloy, by contrast, were 1.0 Mils (25
μm) of metal loss, 1.0 Mils (25 μm)
of average internal penetration, for
a total average metal affected of
only 2.0 Mils (51 μm). These results
are consistent with the results for
lower chlorine level, longer-term
tests given on the previous page. |
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