I know this may be off-topic, but I think there is cross-over as some of you may house older or rare maps and blueprints in your collections.
I am looking to cheaply but archivally store these. The higher-end archival standards require chrome-plated steel or powder-coated steel. If i couldn't afford these, what is the next best thing, given that the storage environment is humidity and temperature controlled? Would reinforced steel suffice for 10-20 yrs?