Urban outdoor furniture placed near pools or in coastal areas with ocean spray is highly susceptible to rust. The primary cause is the constant exposure to moisture and salt, which accelerates the corrosion process on metals. However, whether your furniture rusts depends almost entirely on the material it's made from.
Materials like untreated iron or standard steel will rust quickly in these environments. For longevity, you should choose furniture specifically designed to resist corrosion. The best options are aluminum, which is naturally rust-proof, and marine-grade stainless steel (typically 304 or 316 grade), which contains added elements for superior resistance to saltwater. Synthetic materials like high-density polyethylene (HDPE) rattan are also excellent, rust-free choices. Always check the manufacturer's specifications to ensure the furniture is rated for "coastal" or "marine" use if it will be near saltwater. Proper maintenance, such as regular rinsing with fresh water, can also significantly extend the life of your furniture by removing corrosive salt deposits.