Additionally machining operations influence the surface finish of test specimens vs the surface finish imparted from a highly polished mold cavity when resins are tested. The size and shape being processed influence fiber orientation as well as crystallinity, all of which may impact the mechanical properties.

MCAM’s mechanical property values are generated using specimens machined from extruded, compression molded, cast or injection molded shapes. MCAM's Mechanical Property Values are generated from Shapes They rarely approach the values published within resin datasheets. In practice the actual properties of molded parts are influenced by gating, part geometry and material flow within the mold cavity. Published resin data is always generated from injection molded test specimens processed under ideal conditions and is suitable for comparing different resin grades. The difference is most pronounced for reinforced grades as fiber orientation is highly influenced by processing. The mechanical properties of extruded shapes may differ from the values published by resin producers. Thermoplastics for Sports & Leisure - MCAM Industries.Equipment for Heat, Wear & Corrosive Applications.CoProLoS - online planning and project management.

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