Top-tier flame retardancy: Tested to meet the UL 94-2023 V-0 standard, the highest level of flame resistance for 3D printing filament. UL 94 is a plastics flammability standard established by Underwriters Laboratories (USA). V-0—the highest UL 94 V rating—indicates that burning stops within 10 seconds on a vertically positioned specimen, with dripping particles allowed as long as they are not ignited.
Engineering-level mechanical properties: An engineering-grade material with toughness comparable to PAHT-CF. Its exceptional stiffness and strength make it a top choice for structural components and protective casings.
High heat resistance: Heat Deflection Temperature of 113 °C, suitable for parts exposed to high temperatures, such as motor covers and electronic enclosures.
Water resistant.
Oil and grease resistant.
UV resistant.
Dimensional stability.

Easy to warp: PC-FR has a tendency to warp during printing, especially in large or thick parts.
Drying required before use: PC FR must be dried before use and kept moisture-free during the printing process to ensure the best print quality and consistent finish.
Enclosure recommended: An enclosed chamber helps maintain a consistent temperature around your print, reducing warping and improving print quality.
Low moisture tolerance: PC has a high moisture absorption rate, which can cause poor layer adhesion and brittleness if not properly dried.

PC-FR is a high-performance, flame-retardant polycarbonate filament for FDM 3D printing. It offers exceptional flame retardancy (UL 94-2023 V-0), impact resistance, heat stability (HDT 113 °C), and engineering-level mechanical properties comparable to PAHT-CF. It is ideal for industrial components, protective casings, electrical enclosures, automotive parts, and safety-critical applications. However, it requires drying before use, an enclosed printer for best results, and proper ventilation during printing.