Our products are manufactured standard in a 304 grade stainless. This is a general food grade and outdoor use stainless. 316 grade stainless is generally used as marine grade close to very corrosive environments. i.e.; Salt and chlorine water.
Stainless although very resistant to corrosive environments do require periodic care and maintenance. Cleaning is necessary on all grades of stainless to prevent corrosive particles from gathering in the grain of the stainless surface. This results in a rust colored staining. One might think that the stainless is actually rusting, but it is actually the corrosive particles that are reacting and causing the staining.
Weekly cleaning with a good stainless cleaner will keep the surface free from corrosive particles. In environments where there is salt, chlorine or air pollution present, a weekly clean with water and liquid detergent followed by drying will keep the stainless surface free from contamination. If staining has occurred the surface can be cleaned with a non abrasive kitchen cream cleanser and a light coat of a good quality protective spray such as Fluid Film can be applied. If 304 grade stainless is used in corrosive environment a good protective spray can be used both on the stainless and powder coated surfaces to ensure extra protection.
The pressed steel spider (this attaches the base to the table top) along with the ballast plate which sits on the floor are not stainless steel. Rostek Innovations can not guarantee these components along with their hardware against corrosion. A protective spray is recommended if left outside or used in a corrosive environment. We recommend Fluid Film manufactured by Kellsport Products, telephone 888-341-4600.