No - they are consumables / disposable, so it would not make any
sense to make them out of 304 SS or whatever.
Their designed service life is 6 or 8 weeks, no more. Some last a long time but that's luck and careful use.
You can get re-buildable ones though, like the Bulli / NHaler, and some of these are SS I think. Or ask for one to be custom made in 70-30 cupronickel, then it will last about a thousand years