SS316L vs. SS304: Which Stainless Steel is Better for Storage Tanks? When it comes to choosing the right material for storage tanks, especially in industries like food and beverage, pharmaceuticals, and biotechnology, the decision often boils down to the type of stainless steel used. The two most commonly used grades of stainless steel for storage tanks are SS304 and SS316L. Both offer corrosion resistance and durability, but which one is best for your storage...