ASTM D6662 Standard Specification for Polyolefin-Based Plastic Wood Trim Panels specifies minimum requirements for polyolefin-based plastic wood trim panels for outdoor applications. The standard covers the dimensions, physical and mechanical properties of decking panels, as well as requirements for weather resistance and UV stability. The standard also specifies test methods to determine the performance of decking panels, including exposure to accelerated weathering using a xenon arc apparatus.

In addition to physical and mechanical properties and weatherability requirements, the standard also includes color stability and resistance to chemicals, mold and rot. The test methods described in the standard include measurements of density, dimensional stability and flexural properties of deck boards, as well as impact and abrasion resistance. The standard also specifies test methods to determine the resistance of panels to staining, fading, and weathering, including exposure to xenon arc fixtures.
Overall, ASTM D6662 provides a standardized set of specifications and test methods for polyolefin-based plastic wood trim panels that help ensure consistent quality and performance of these materials in outdoor applications.
