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Materials for SO2/SO3
2

Materials for SO2/SO3

Materials for SO2/SO3

(OP)
I am evaluating a reactor design that would have SO2/SO3 mixtures at about 1000F.  What are the alternatives for materials of construction.  In a dry system is aluminumized SS necessary?

RE: Materials for SO2/SO3

2
Even 12% chromium ferritic stainless steels are good to 700C in SO2 environments. If you want protection to 800C, move up to a 16% chromium grade. So, aluminizing is not necessary.

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