Aluminum is a lightweight and corrosion-resistant metal, but thatâ€s not an excuse to buy any old beach chair. Beach chairs are marketed as â€œweatherproofâ€ and rust-resistant because theyâ€re usually made from aluminum or stainless steel with thick powder-coated surfaces. That being said, if you want the best lifespan with no issues whatsoever, itâ€s better to go with a stainless steel model that was designed to be more sturdy and will last much longer. Aluminum can take on a soft finish in some environments (i.e., saltwater), so buyers should look for models with galvanized undercarriage protection (which wonâ€t corrode) if you want your purchase to last well into the next decade.