Great question — I get this a lot from landscape architects and city planners. For our urban benches, we do not rely on a single type of steel; we use a rust-resistant system matched to the environment. For most standard city benches, the frame is heavy-gauge carbon steel that is hot-dip galvanized inside and out. That zinc coating bonds to the steel and acts as a sacrificial barrier against moisture and road salt. After galvanizing, we apply a marine-grade polyester powder coat. This gives the bench its color and adds a second layer of protection, so small scratches do not immediately expose raw steel. For premium or coastal locations, we offer 304 stainless steel and 316 stainless steel. 304 is a great all-rounder because its chromium and nickel content forms a passive oxide layer that resists rust. 316 is even better near saltwater because it contains molybdenum, which improves pitting resistance. All bolts, brackets, and feet are stainless steel or zinc-plated, and we design seat slats with drainage gaps so water cannot sit against the metal. If you are choosing a bench for a humid or coastal city, I would recommend hot-dip galvanized steel with a powder-coated finish or 316 stainless steel. Both will keep the bench looking clean and rust-free for many years with very little maintenance.
What type of steel is used in your urban benches to prevent rust?
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