What are the differences in screw pull-out strength between WPC and aluminum composite planters?

When choosing materials for outdoor planters, understanding the screw pull-out strength of WPC (Wood Plastic Composite) and aluminum composite is crucial for durability and longevity. WPC planters, made from a blend of wood fibers and plastic, generally offer moderate screw retention due to their fibrous structure. However, they may weaken over time when exposed to moisture. Aluminum composite planters, on the other hand, provide superior screw pull-out strength thanks to their metal core and rigid composition, ensuring long-term stability. Factors like material density, screw type, and environmental conditions also play a role. For high-stress applications, aluminum composite is often the better choice, while WPC may suffice for lighter uses. Always consider your project's specific needs when selecting between these materials.