[MW:2513] Brine Tank Material Selection

I have an old carbon steel brine tank which is severly corroded and
needs to be replaced. The brine solution contains ~ 10% salt (NaCl)
and 1% caustic (NaOH) at 110 deg F. The tank is used intermittently in
a batch process: filled for a few hours then drained and left empty
for 2 days. It is open to the atmosphere.

Initialy I was considering using 316 SS, but have been reading that
pitting could be a problem with the chloride. What material should be
used in this application?

Thanks for your help.

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