More than interested in the replies to this myself, as I suspect that we hobby beekeepers refresh/renew super frames more often than strictly necessary or beneficial. So many people (not all of them expanding, I presume) talk of the hundreds of frames they knock-up in the winter months.
I fumigate frames routinely, so am happy that they do not harbour too many nasties. Given, therefore, that supers will not generally host brood (and the attendant excrement etc.), it's an interesting point. I have inspected some super comb from commercial beekeepers in Portugal, and it was black as coal. The good lord only knows how old it was, and the honey was probably amazing.
Not that I am saying that's right either... but my own feeling is that you should be able to get much more than 4 or 5 years from your drawn frames. (Obviously brood frames are a different matter).
Discuss ?!