Leon Fisk fired this volley in news:mv8v2m$pn$1
@dont-email.me:

Maybe try stripping all the galvanize off a test piece and then see how
fast/much that rusts?

Heh! Not worth the trouble! All I needed was a couple of heavy mount
brackets for a pyrotechnic mold, and was surprised by the behavior of this
piece.

I think it's solved.

Lloyd