On Friday, May 26, 2017 at 7:44:17 PM UTC-7, swalker wrote:
When I purchased my new band saw table last year it arrived with a
beautiful steel table.

Now it has stained due to the processing of green wood for turning.
It is not etched, just stained, mostly by green maple.

Try sudsy ammonia, and follow up with metal polish and/or paste wax.
Oily is good for the metal, but won't touch sap.