{
  "opening": "Polymaker HT-PLA is a PLA you can anneal. As printed, its heat-deflection temperature is 61.4 °C (143 °F) at 0.45 MPa, close to ordinary PLA. After annealing, that HDT is 107.2 °C (225 °F). PLA-CF is not that material: Polymaker lists PLA-CF at 54 °C (129 °F) HDT, and it is the abrasive row.",
  "question": "What is HT-PLA / heat-resistant PLA (and PLA-CF) good for?",
  "slug": "htpla",
  "useCase": "heat-resistance",
  "useCaseLabel": "Heat resistance",
  "updated": "2026-10-19",
  "shortAnswer": "Polymaker HT-PLA is a PLA you can anneal. As printed, its heat-deflection temperature is 61.4 °C (143 °F) at 0.45 MPa, close to ordinary PLA. After annealing, that HDT is 107.2 °C (225 °F). PLA-CF is not that material: Polymaker lists PLA-CF at 54 °C (129 °F) HDT, and it is the abrasive row.",
  "recommendedMaterials": [
    "pla"
  ],
  "printerConsiderations": [
    "Polymaker's product page says anneal 30 minutes at 80–100 °C (176–212 °F), with 100 °C (212 °F) recommended, and expects about 0.3–0.6% dimensional change. A longer schedule on the same page scales with wall thickness, from 30–60 minutes under 4 mm up to 3–6 hours at 10 mm.",
    "The TDS wiki page instead says anneal for 3 minutes at 80–90 °C (176–194 °F). Those times disagree. Use the product-page schedule, and treat 3 minutes as a conflicting line, not a second official time.",
    "The product FAQ says only the GF version gains significant HDT from annealing. The TDS table shows unfilled HT-PLA moving from 61.4 °C (143 °F) to 107.2 °C (225 °F) HDT at 0.45 MPa. Report both. Do not average them."
  ],
  "pros": [
    "The thermal table distinguishes as-printed HDT, annealed HDT, and Vicat, so the marketing 'up to 130 °C (266 °F)' line is not the HDT.",
    "PLA-CF stays on its own row, with a hardened-nozzle flag and a lower HDT."
  ],
  "cons": [
    "None of the five supplied threads is about HT-PLA. One is a PLA Tough hammer comparison.",
    "As-printed HT-PLA HDT at 0.45 MPa is 61.4 °C (143 °F). Annealing is the step that moves the number."
  ],
  "community": "r/BambuLab 1mevr7y compares PLA Tough with a hammer. The score-7 comment wants a comparison against eSUN and ELEGOO PLA+. The score-3 comment is about continuing the experiment. r/BambuLab 10k03sy is layer consistency. The score-16 comment says open a ticket. The score-6 comment asks why a 0.08 mm layer was used. The bank titles on r/BambuLab 110jvxl, 1cpqeev, and 14t1d0o are a cold plate, a PLA Tough substitute, and PLA-CF in an AMS. No excerpt was supplied for those three, so this page does not quote them.",
  "related": [
    "heat",
    "pla_vs_plaplus",
    "cf",
    "pla_print",
    "drying"
  ],
  "faq": [
    {
      "q": "Can I quote 130 °C (266 °F) or 150 °C (302 °F) as the heat rating?",
      "a": "Those lines are on Polymaker's pages as shape-holding without a load. The product page defines heat stability as no deformation while not under a load. The HDT numbers are under load: 58.6 °C (137 °F) at 1.8 MPa and 61.4 °C (143 °F) at 0.45 MPa as printed, and 71.7 °C (161 °F) and 107.2 °C (225 °F) after annealing. Vicat is 156.2 °C (313 °F) as printed and 155.2 °C (311 °F) annealed."
    },
    {
      "q": "Is PLA-CF the heat-resistant PLA?",
      "a": "No. Polymaker's glance table lists PLA-CF HDT at 54 °C (129 °F) under 0.45 MPa, below PolyLite PLA at 60 °C (140 °F). PLA-CF is the abrasive, hardened-nozzle material. HT-PLA is the annealable one."
    }
  ],
  "sources": [
    {
      "title": "Polymaker HT-PLA product page",
      "url": "https://wiki.polymaker.com/polymaker-products/polymaker-filaments/prime-materials/functional-pla/ht-pla",
      "kind": "manufacturer"
    },
    {
      "title": "Polymaker HT-PLA technical data",
      "url": "https://wiki.polymaker.com/polymaker-products/more-about-our-products/documents/technical-data-sheets/pla/ht-pla",
      "kind": "datasheet"
    },
    {
      "title": "Polymaker technical data at a glance",
      "url": "https://wiki.polymaker.com/polymaker-products/polymaker-filaments/technical-data-at-a-glance",
      "kind": "datasheet"
    },
    {
      "title": "Polymaker HT-PLA technical data sheet PDF",
      "url": "https://cdn.shopify.com/s/files/1/0548/7299/7945/files/Polymaker_HT-PLA_TDS_EN_V1.1.pdf",
      "kind": "datasheet"
    },
    {
      "title": "Community source, r/BambuLab 1mevr7y",
      "url": "https://www.reddit.com/r/BambuLab/comments/1mevr7y/",
      "kind": "reddit"
    },
    {
      "title": "Community source, r/BambuLab 10k03sy",
      "url": "https://www.reddit.com/r/BambuLab/comments/10k03sy/",
      "kind": "reddit"
    },
    {
      "title": "Community source, r/BambuLab 110jvxl",
      "url": "https://www.reddit.com/r/BambuLab/comments/110jvxl/",
      "kind": "reddit"
    },
    {
      "title": "Community source, r/BambuLab 1cpqeev",
      "url": "https://www.reddit.com/r/BambuLab/comments/1cpqeev/",
      "kind": "reddit"
    },
    {
      "title": "Community source, r/BambuLab 14t1d0o",
      "url": "https://www.reddit.com/r/BambuLab/comments/14t1d0o/",
      "kind": "reddit"
    }
  ],
  "recommendations": [
    {
      "rank": 1,
      "note": "Catalog nozzle 210–230 °C (410–446 °F) and bed 25–60 °C (77–140 °F), matching the product page. Drying is 60 °C (140 °F) for 6 hours. Hardened nozzle is blank. The product page says this grade is non-abrasive.",
      "brand": "Polymaker",
      "product": "HT-PLA",
      "material": "PLA",
      "url": "/brand/polymaker/ht-pla",
      "nozzle": "210–230 °C (410–446 °F)",
      "bed": "25–60 °C (77–140 °F)",
      "pricePerKg": null,
      "datasheetUrl": "https://cdn.shopify.com/s/files/1/0548/7299/7945/files/Polymaker_HT-PLA_TDS_EN_V1.1.pdf",
      "affiliateUrl": null
    },
    {
      "rank": 2,
      "note": "Same nozzle and bed, 210–230 °C (410–446 °F) and 25–60 °C (77–140 °F), with a hardened nozzle recorded. The product page says the glass-fiber grade is 12% glass and needs a hardened nozzle. Annealed HDT on the glance table is 114.7 °C (238 °F) at 0.45 MPa.",
      "brand": "Polymaker",
      "product": "HT-PLA-GF",
      "material": "PLA",
      "url": "/brand/polymaker/ht-pla-gf",
      "nozzle": "210–230 °C (410–446 °F)",
      "bed": "25–60 °C (77–140 °F)",
      "pricePerKg": null,
      "datasheetUrl": "https://cdn.shopify.com/s/files/1/0548/7299/7945/files/Polymaker_HT-PLA-GF_TDS_EN_V1.1.pdf",
      "affiliateUrl": null
    },
    {
      "rank": 3,
      "note": "The comparison, not a heat upgrade. PolyLite PLA-CF lists 190–230 °C (374–446 °F) and a bed of 50–70 °C (122–158 °F), hardened nozzle required, drying 55 °C (131 °F) for 6 hours. The glance table lists HDT 54 °C (129 °F) at 0.45 MPa and Vicat 64 °C (147 °F).",
      "brand": "Polymaker",
      "product": "Polylite PLA CF",
      "material": "PLA",
      "url": "/brand/polymaker/polylite-pla-cf",
      "nozzle": "190–230 °C (374–446 °F)",
      "bed": "50–70 °C (122–158 °F)",
      "pricePerKg": null,
      "datasheetUrl": "https://cdn.shopify.com/s/files/1/0548/7299/7945/files/PolyLite_PLA-CF_TDS_EN_V5.4.pdf",
      "affiliateUrl": null
    }
  ]
}