PA66 / Nylon 6/6 / Extruded Nylon Sheet

PA66 material (polyamide 66) is a high-performance extruded nylon plastic offering greater tensile strength, stiffness, and thermal capability than PA6. The improved mechanical and thermal properties result from the regular molecular symmetry of the PA66 polymer chain, which packs more tightly and resists deformation at elevated temperatures. Ready Plastics stocks PA66 in sheet and rod for machined gears, structural members, wear components, and precision industrial parts.

PA66 is the preferred nylon when load-bearing capacity and heat resistance are the primary design drivers. Its higher rigidity reduces deflection in structural applications, and its improved heat resistance supports use in environments where PA6 would approach its performance limits. The material maintains good wear resistance and can be machined to tight tolerances on standard shop equipment, making it practical for precision components across automotive, industrial, and mechanical engineering applications.

Modified grades. Ready Plastics extends PA66 performance with two variants. PA66 GF30 adds 30% glass fiber reinforcement for significantly increased stiffness and load capacity in structural applications. PA66 MOLY incorporates molybdenum disulfide to reduce friction and extend wear life in dynamic, sliding-contact applications — combining PA66's strength with enhanced tribological performance.

Choosing within the nylon family. PA66 is the strength-and-heat-resistance leader among standard extruded nylon grades at Ready Plastics. For lower moisture absorption and better dimensional stability in precision work, consider PA12 or PA612. For maximum thermal and mechanical performance, see PPA. For the toughest impact-resistant option, PA6 remains the workhorse. Explore the full nylon material lineup.