http://www.youtube.com/watch?v=eZJObE_VXms http://www.shortrunpro.comâ Ever wonder about the differences between Aluminum, Galvanized, Steel, and Stainless Steel? In this video, Short Run Pro Team Engineer, Arthur Toal explains the differences between these metals, and what you should be looking for when it comes to weight, strength, looks, rust and cost. This is the sixth part of a series on cost effective practices for metal fabrication for your metal parts.