{"product_id":"filament-polymaker-ht-pla-pro-300-mm-s","title":"Polymaker HT-PLA Pro – 1.75 mm, 1 kg PLA Filament","description":"\u003cp\u003e\u003cstrong\u003ePolymaker HT-PLA Pro\u003c\/strong\u003e is a tough PLA filament for functional prototypes, housings, brackets, jigs and fixtures. It combines the familiar PLA printing workflow with improved impact strength and layer bonding compared with Polymaker HT-PLA. Choose \u003cstrong\u003eBlack or Grey, 1.75 mm, 1 kg\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey benefits\u003c\/h2\u003e\n\u003cul\u003e\u003cli\u003eAround twice the notched impact strength of HT-PLA: 9.94 versus 4.94 kJ\/m² in X–Y.\u003c\/li\u003e\u003cli\u003eStronger layer bonding, with Z-axis tensile strength of 26.8 MPa.\u003c\/li\u003e\u003cli\u003e3D printing speeds up to 300 mm\/s with suitable hardware and settings.\u003c\/li\u003e\u003cli\u003eA standard brass nozzle is sufficient; no enclosure is required.\u003c\/li\u003e\u003cli\u003eFinished parts can be annealed to improve heat resistance under load.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch2\u003eHT-PLA Pro vs HT-PLA\u003c\/h2\u003e\n\u003cp\u003ePro offers higher impact strength and improved strength between layers. This is useful for parts that are assembled, handled frequently or exposed to impacts. Compare it with \u003ca href=\"https:\/\/3dlarge.com\/en\/products\/polymaker-ht-pla-pla-filament-with-resistance-up-to-150-degree-c\"\u003ePolymaker HT-PLA\u003c\/a\u003e for your application.\u003c\/p\u003e\u003ctable\u003e\u003cthead\u003e\u003ctr\u003e\u003cth scope=\"col\"\u003eProperty\u003c\/th\u003e\u003cth scope=\"col\"\u003eHT-PLA Pro\u003c\/th\u003e\u003cth scope=\"col\"\u003eHT-PLA\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd\u003eNotched Charpy, X–Y\u003c\/td\u003e\u003ctd\u003e9.94 kJ\/m²\u003c\/td\u003e\u003ctd\u003e4.94 kJ\/m²\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eTensile strength, Z\u003c\/td\u003e\u003ctd\u003e26.8 MPa\u003c\/td\u003e\u003ctd\u003e20.8 MPa\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eThese are typical laboratory values. Part orientation, geometry, walls, infill and print settings affect the strength of the finished part.\u003c\/p\u003e\n\u003ch2\u003eHeat resistance: Vicat and HDT\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eA Vicat softening temperature of 148.3°C does not mean a loaded part can operate continuously at that temperature.\u003c\/strong\u003e For parts exposed to both heat and mechanical load, use HDT — the heat deflection temperature at a specified load — as the more relevant reference.\u003c\/p\u003e\u003ctable\u003e\u003cthead\u003e\u003ctr\u003e\u003cth scope=\"col\"\u003eThermal property\u003c\/th\u003e\u003cth scope=\"col\"\u003eAs printed\u003c\/th\u003e\u003cth scope=\"col\"\u003eAfter annealing\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd\u003eVicat softening temperature\u003c\/td\u003e\u003ctd\u003e148.3°C\u003c\/td\u003e\u003ctd\u003e150.5°C\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eHDT at 0.45 MPa\u003c\/td\u003e\u003ctd\u003e56.3°C\u003c\/td\u003e\u003ctd\u003e107.6°C\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eHDT at 1.8 MPa\u003c\/td\u003e\u003ctd\u003e53.8°C\u003c\/td\u003e\u003ctd\u003e68.6°C\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eAnneal at 100°C. Allow 30–60 minutes for walls under 4 mm, 1–2 hours at 6 mm, 2–4 hours at 8 mm and 3–6 hours at 10 mm. Use uniform heating, let the part cool inside the chamber and check its dimensions. Expected dimensional change is around 0.3–0.6%, so test a sample first for assemblies with tight tolerances.\u003c\/p\u003e\n\u003ch2\u003e3D printing settings\u003c\/h2\u003e\u003ctable\u003e\u003cthead\u003e\u003ctr\u003e\u003cth scope=\"col\"\u003eSetting\u003c\/th\u003e\u003cth scope=\"col\"\u003eRecommendation\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd\u003eNozzle\u003c\/td\u003e\u003ctd\u003e230°C; working range 210–230°C\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eBed\u003c\/td\u003e\u003ctd\u003e25–65°C\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eBuild surface\u003c\/td\u003e\u003ctd\u003ePC or textured PEI\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eSpeed\u003c\/td\u003e\u003ctd\u003eUp to 300 mm\/s\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eCooling fan\u003c\/td\u003e\u003ctd\u003eOn\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eEnclosure\u003c\/td\u003e\u003ctd\u003eNot required\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eDirect-drive retraction\u003c\/td\u003e\u003ctd\u003e1–3 mm at 20–40 mm\/s\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eDrying if moisture is absorbed\u003c\/td\u003e\u003ctd\u003e60°C for 6 hours\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eStart with a proven PLA profile and a short temperature, flow and layer-bonding test. Match the speed to your hotend flow and required finish. At 230°C the surface is semi-gloss. Around 210°C it becomes more matte, but strength may decrease.\u003c\/p\u003e\n\u003ch2\u003eSuitable applications\u003c\/h2\u003e\n\u003cp\u003eHT-PLA Pro is a practical choice for functional prototypes, brackets, clips, housings and workshop fixtures. For parts near a heat source, check the actual load and temperature against HDT. UV resistance is similar to ordinary PLA; ASA may be a better choice for prolonged exposure to direct sunlight.\u003c\/p\u003e\n\u003ch2\u003eTechnical specifications and storage\u003c\/h2\u003e\u003ctable\u003e\u003cthead\u003e\u003ctr\u003e\u003cth scope=\"col\"\u003eSpecification\u003c\/th\u003e\u003cth scope=\"col\"\u003eValue\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd\u003eMaterial\u003c\/td\u003e\u003ctd\u003ePLA\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eDiameter\u003c\/td\u003e\u003ctd\u003e1.75 mm\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eNet filament weight\u003c\/td\u003e\u003ctd\u003e1 kg\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eColours\u003c\/td\u003e\u003ctd\u003eBlack and Grey\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eDensity\u003c\/td\u003e\u003ctd\u003e1.24 g\/cm³\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eTensile strength, X–Y \/ Z\u003c\/td\u003e\u003ctd\u003e37.6 \/ 26.8 MPa\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eNotched Charpy, X–Y\u003c\/td\u003e\u003ctd\u003e9.94 kJ\/m²\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eKeep the spool in a sealed dry box with desiccant. If needed, dry at 60°C for 6 hours. Explore the other \u003ca href=\"https:\/\/3dlarge.com\/en\/collections\/pla-filament\"\u003ePLA filaments for 3D printing\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0932\/3318\/5032\/files\/TDS_Polymaker_HT-PLA_Pro_V1.4_2026-7-17_EN.pdf?v=1791295763\"\u003ePolymaker HT-PLA Pro technical data sheet — PDF (EN)\u003c\/a\u003e\u003c\/p\u003e","brand":"Polymaker","offers":[{"title":"Black","offer_id":59008838467848,"sku":"PA20001","price":24.99,"currency_code":"EUR","in_stock":false},{"title":"Grey","offer_id":59008838500616,"sku":"PA20003","price":24.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0932\/3318\/5032\/files\/filament-polymaker-ht-pla-pro-cheren-izometrichen-pogled.webp?v=1791295545","url":"https:\/\/3dlarge.com\/en\/products\/filament-polymaker-ht-pla-pro-300-mm-s","provider":"3DLarge","version":"1.0","type":"link"}