What's the most durable frame material for an outdoor chaise lounge?

Across r/BuyItForLife and r/pools threads we read, powder-coated aluminum is the consensus pick for low-maintenance, rust-free outdoor use. PE wicker over a steel frame is also popular for a softer look, but reviewers note steel frames can rust at weld points if the powder coating chips. Teak holds up beautifully but reviewers consistently warn about the annual maintenance burden.