Originally Posted by
SJAdventures
Ok it is conceded that Grade 8 steel is much harder than 18-8 SS. That still does not answer my question. Does a vent liner need to made from a steel as hard as grade #8 steel just because it is stronger than 18-8 SS?
I would say no. You could use a lower grade steel if hardened and treated properly to resist gas cutting and wear. This is my opinion only. I have no facts to support that.