Polymaker HT-PLA Pro 1.75mm Filament 1kg

Heat Ready. Impact Ready. Still PLA Polymaker™ HT-PLA Pro is a tough PLA for functional parts that need better durability in real-world use. It prints as easily as standard PLA and keeps its shape without load in warm environments. It is made for makers, engineers, and print farms that need real durability without added printing complexity. Won't sag up to 150°C straight off the plate Polymaker™ HT-PLA Pro is designed to keep its shape in heat-exposed environments without load. Its Vicat softening temperature reaches 148.3 °C straight off the build plate and 150.5 °C after annealing, tested off the plate with no load. For applications that require heat resistance under load, annealing is needed. A 30-minute anneal at 100°C increases the Heat Deflection Temperature (HDT @ 0.45 MPa) from 56.3°C to 107.6°C. This makes it better suited for warm-use cases such as sunlit windowsills or parts placed near heat-emitting machinery. 2x PLA durability HT-PLA Pro keeps strong thermal properties while improving mechanical performance. Compared with regular HT-PLA, it delivers more than 2x higher impact strength (9.94 kJ/m² vs 4.94 kJ/m²) and 30% higher Z-axis interlayer adhesion (26.8 MPa vs 20.8 MPa). This helps printed parts resist impact and splitting along layer lines. Prints with PLA settings Unlike many high-temperature filaments, HT-PLA Pro prints with standard PLA settings. It runs on most standard FDM printers, with no enclosure, no specialty hotend, and no complex tuning required. Supporting print speeds up to 300 mm/s, it can fit into existing production workflows with minimal changes. Please note: Annealing is required for heat resistance under load Technical Specifications Mechanical Properties Property X-Y Z Method Tensile strength 37.6MPa 26.8MPa ISO 527 Elongation at break 13% 2.6% ISO 527 Bending strength 60.1MPa 37.1MPa ISO 178 Bending modulus 2.21GPa 1.91GPa ISO 178 Young's modulus 2.27GPa 1.85GPa ISO 527 Charpy, unnotched 45.7KJ/m² 10.3KJ/m² ISO 179 Charpy, notched 9.94KJ/m² - ISO 179 Tested on 100% infill specimens. X-Y = across the layers, Z = between the layers (layer adhesion). Thermal Properties Property Value Method Melting temperature 173.35°C ISO 11357 Glass transition temperature (Tg) 59.15°C ISO 11357 Vicat softening temperature 148.3°C ISO 306 HDT (0.45 MPa) 56.3°C ISO 75 HDT (1.8 MPa) 53.8°C ISO 75 Tested on 100% infill specimens. X-Y = across the layers, Z = between the layers (layer adhesion). Print Settings Printing Temperature: 210°C - 230°C (230°C recommended for optimal performance) Bed Temperature: 25°C - 65°C Printing Speed: Up to 300mm/s Fan: ON Hardware Requirements: Standard brass nozzle (no hardened nozzle required); prints perfectly without an enclosure or heated chamber. Direct Drive: Retraction Distance: 1-3mm Retraction Speed: 20-40mm/s Drying Settings: 60°C for 6h (Only if the material has absorbed moisture) Annealing for Maximum Heat Resistance: To achieve maximum temperature stability and unlock the peak HDT properties, anneal your printed parts at 100°C for 30 minutes.