When choosing a park chair, the frame material is crucial for longevity and stability. The strongest options include:

1. Aluminum: Lightweight yet robust, aluminum resists rust and corrosion, making it ideal for coastal or humid areas. Powder-coated aluminum adds extra durability.

2. Steel: Heavy-duty steel frames offer unmatched strength for high-traffic public spaces. Galvanized or stainless steel variants prevent rust but may require maintenance.

3. Reinforced Plastic/Polymer: Modern composites like polypropylene are weatherproof and lightweight but less sturdy for heavy loads.

4. Titanium: Rare and expensive, titanium combines aluminum’s lightness with steel’s strength, perfect for premium outdoor furniture.

For most users, aluminum strikes the best balance between strength, weight, and cost, while steel excels in rugged environments. Consider weather exposure and usage frequency to pick the optimal material.