When selecting park chairs, durability and practicality are key. The heaviest yet still practical materials include cast iron, solid hardwood, and powder-coated steel.

Cast iron is exceptionally heavy and durable, ideal for permanent installations, but its weight makes it less portable. Solid hardwood like teak or oak offers a balance of heft and practicality, resisting weather while remaining movable. Powder-coated steel provides a lighter alternative with impressive strength, often used in commercial settings.

For optimal practicality, consider hybrid designs—such as steel frames with wooden slats—which combine weight and functionality. Always prioritize corrosion-resistant treatments to ensure longevity in outdoor conditions.

Ultimately, the "heaviest practical" choice depends on your needs: cast iron for permanence, hardwood for natural appeal, or steel for a middle ground. Each material excels when matched to its intended use.