Built a 12' boat years ago in Teak. I found it to be abrasive more than hard, oily as well. The sawdust is like fine breadcrumbs and tends to clog up blades pretty quick, it is also abrasive and can dull blades as quick as grinding paste.I have never tried it on the S/S but think it may work well. If it has blackish streaks throuh it, it is generally from Africa and looks fantastic when done, the Malasian Teak is usually pretty plain. Because of the oil, it will clog sandpaper with a few rubs so use some spirit to get rid of the surface oil before rubbing and again before painting. Hope this helps a little. Iggy