More information about the table's design would help. Did you want the table to be removable, so you can stow it when it isn't needed. In that case, a piano hinge would be the wrong hinge to use.
There are hinges that allow you to unmount the table without removing any hardware, which might be a good choice in this case, like these:
If you're looking for a locking hinged support arm, then you're probably looking for something like what is found here. This is made of 304SS.
BTW, most of the Edson ones are designed for attaching to a binnacle or steering pedestal so you can have a folding table for the cockpit.
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You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.
—Cpt. Mal Reynolds, Serenity (edited)
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