What is the maximum temperature that HDPE sheet can withstand?

The high operating temperature for most HDPE is 160°F (71°C). iPoly has developed Sani-Armor HDPE sheet to withstand 170°F (77°C). As with any material, when you come near to maximum operating temperatures, the physical characteristics will weaken. If your application requires sustained service life that is near the high operating temperature, you should consider alternative materials.