What are the temperature thresholds for polyethylene bench deformation?

Polyethylene benches, commonly made from high-density polyethylene (HDPE), are popular for outdoor use due to their durability and resistance to weathering. However, they can deform under extreme temperatures. The typical temperature thresholds for polyethylene bench deformation are:

- Softening begins at 80–100°C (176–212°F): At this range, HDPE starts to lose rigidity and may warp under pressure.

- Melting point at 120–135°C (248–275°F): Prolonged exposure can cause permanent deformation or melting.

- Cold brittleness below -50°C (-58°F): While rare, extreme cold can make polyethylene brittle and prone to cracking.

To prevent deformation, avoid placing benches near heat sources like fire pits or in direct sunlight for extended periods. Choosing UV-stabilized HDPE can also improve longevity. Understanding these thresholds helps maintain the integrity of polyethylene outdoor furniture.