| HS Code | 139488 |
| Material | Polylactic Acid (PLA-HT) |
| Filament Diameter | 1.75 mm |
| Diameter Tolerance | ±0.03 mm |
| Net Weight | 1 kg |
| Spool Outer Diameter | 200 mm |
| Spool Inner Diameter | 53 mm |
| Spool Width | 65 mm |
| Print Temperature | 200-230 °C |
| Bed Temperature | 0-60 °C |
| Print Speed | 30-60 mm/s |
| Cooling Fan | 100% |
| Density | 1.24 g/cm³ |
| Melt Flow Rate | 6-8 g/10 min |
| Tensile Strength | 60 MPa |
| Elongation At Break | 5% |
| Flexural Strength | 90 MPa |
| Flexural Modulus | 2500 MPa |
| Heat Deflection Temperature | 80-100 °C |
| Melting Point | 170-180 °C |
| Glass Transition Temperature | 60-65 °C |
| Annealing Temperature | 80-100 °C |
| Annealing Time | 1-2 hours |
| Drying Temperature | 60 °C |
| Drying Time | 4-6 hours |
| Storage Condition | Cool, dry place |
| Color Options | Black, White, Grey, Red, Blue, Green, Yellow, Orange |
As an accredited SIMOGREEN PLA-HT Heat Resistant 3D Printing Polylactic Acid factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Sealed foil pouch containing 1 kg SIMOGREEN PLA-HT Heat Resistant 3D Printing Polylactic Acid filament, with label and desiccant. |
| Container Loading (20′ FCL) | Container Loading (20′ FCL): SIMOGREEN PLA-HT heat-resistant 3D printing polylactic acid, securely palletized and stowed in a 20-foot full container load. |
| Shipping | SIMOGREEN PLA-HT Heat Resistant 3D Printing Polylactic Acid is shipped as a non-hazardous solid polymer filament. It is not regulated as dangerous goods for transport; no UN number, hazard class, or packing group is assigned. Store dry, away from heat, and handle with standard care in sealed packaging. |
| Storage | Store SIMOGREEN PLA-HT filament in a cool, dry, well-ventilated place away from direct sunlight, heat, moisture, and ignition sources. Keep sealed in original packaging or an airtight container with desiccant to prevent hydrolysis and degradation. Avoid humid, dusty areas. Recommended storage: 15–30°C, below 50% relative humidity. Reseal after use and observe shelf life. Keep out of reach of children. |
| Shelf Life | SIMOGREEN PLA-HT has a typical shelf life of 12 months when stored sealed, cool, dry, away from sunlight and moisture. |
In automotive interior prototyping lines where polycarbonate and ABS tooling costs prohibit short-run iteration, SIMOGREEN PLA-HT functions as a direct-print alternative for components exposed to 85–105°C intermittent thermal loads. Flammability acceptance for this segment aligns with ISO 3795:1989 or FMVSS 302, with a horizontal burn rate not exceeding 100 mm/min; heat deflection under flexural load is characterized per ISO 75-2:2013 method B at 0.45 MPa. The resin is printed at 100 wt% virgin SIMOGREEN PLA-HT; when a pigmented masterbatch is required for interior color matching, the addition is limited to 2.0–4.0 wt% because higher loadings suppress crystallinity and reduce heat deflection temperature by up to 6°C as measured by ASTM D648-18. The build process on an enclosed FFF platform uses a hardened 0.4 mm nozzle at 210–230°C extrusion temperature, 60–80°C bed temperature, and 0.16–0.20 mm layer height inside an enclosed chamber maintained at 40–50°C. Constrained annealing is the critical downstream operation: parts are clamped between 6 mm aluminum plates with PTFE release film and ramped from 60°C to 100°C at 0.5°C/min, held for 45–60 min, then cooled at 0.5°C/min to 40°C before removal. Failure to constrain the component during the crystallization exotherm produces 0.4–0.8% anisotropic shrinkage and observable warpage on unsupported apertures such as vent slots and snap-fit tabs. Terminal parts produced under these conditions include HVAC actuator prototypes, dashboard vent housings, wiring harness clips, battery disconnect switch brackets, and service access covers. Operational boundary: continuous under-hood oil exposure at temperatures above 110°C is not recommended because PLA-HT undergoes ester plasticization in hot aliphatic hydrocarbon environments.
The primary failure mode in annealed PLA-HT electronic fixture construction is anisotropic shrinkage during the crystallization ramp, which changes the center-to-center distance of locator holes if the part is not mechanically restrained. Compliance for this segment is governed by UL 94 Fourth Edition flammability classification, with unfilled PLA-HT typically meeting HB at 1.5 mm thickness and V-2 only after specific annealing validation; glow-wire testing per IEC 60695-2-11 at 750°C is commonly required for appliance-related enclosures. For ESD-safe test sockets, 2.0–4.0 wt% of a permanent antistatic masterbatch is compounded to reduce surface resistivity from above 10^12 Ω/sq to 10^8–10^10 Ω/sq measured per IEC 61340-2-3. Non-ESD fixtures use the resin at 100 wt%. Layer deposition is carried out with a 0.4 mm hardened nozzle, 0.12 mm layer height, 70°C bed, and 45°C enclosed chamber. A constrained anneal at 100°C for 90 min follows printing, using 2.5 mm hardened steel dowels inserted into undersized holes; the cooling rate is restricted to ≤0.5°C/min to prevent stress gradients. After annealing, the holes are reamed to ISO 286-1:2010 IT7 tolerance. Terminal product types include PCB test nest inserts, solder stencil alignment frames, connector locking bezels, thermal shields for wave soldering operations, and ESD-safe assembly trays. Dimensional drift data: during repeated thermal cycling between 25°C and 95°C, as-printed PLA-HT parts exhibit cumulative irreversible shrinkage of 0.2–0.4% over the first three cycles, after which dimensions stabilize; constrained annealing reduces this drift to below 0.05% through complete crystallization of the PLA matrix. Published data specific to SIMOGREEN PLA-HT in this exact configuration is limited; the quoted ranges reflect independent measurements on annealed high-heat PLA formulations per ASTM D648-18 and ASTM E831-19.
| Standard | Test method / clause | Acceptance criterion |
|---|---|---|
| UL 94 Fourth Edition | Vertical burn, 20 mm specimen | V-2 at 1.5 mm thickness |
| IEC 60695-2-11 | Glow wire, 750°C | No ignition within 30 s |
| IEC 61340-2-3 | Surface resistivity | 10^8–10^10 Ω/sq |
| ASTM D648-18 | HDT, 0.45 MPa | Supplier datasheet value after annealing |
On assembly lines that run mixed-model changeovers, locating fixtures produced from SIMOGREEN PLA-HT reduce the turnaround from CAD file to alignment tool to less than one shift, provided the workshop maintains a circulating-air annealing oven with a defined 85°C soak cycle. No mandatory product safety standard governs this category; dimensional verification of locator features follows ISO 286-1:2010 IT7 tolerance, while mechanical acceptance tests are conducted per ASTM D638-14 for tensile yield and ASTM D790-17 for flexural modulus. The resin is processed at 100 wt% uncompounded; wear-prone contact surfaces are locally bored and fitted with hardened steel dowel sleeves rather than blending abrasive fillers that reduce layer adhesion. Layered deposition via a 0.6 mm brass or hardened nozzle operates at 0.3 mm layer height, 25–30% gyroid infill, and 70°C bed temperature inside an enclosed chamber at 45°C. Thermal conditioning proceeds at 85°C for 30 min, followed by post-machining with carbide end mills at 18,000 rpm using compressed-air cooling to preserve bore tolerances. Terminal parts include PCB board carrier trays, ultrasonic weld nests, laser-marking fixtures, drilling jigs, and robotic end-of-arm gripper fingers. A process boundary exists: continuous contact with alkaline degreasers or ester-based cutting fluids accelerates degradation through ester hydrolysis, causing surface softening and loss of locator precision.
For Class A non-implantable medical housings, SIMOGREEN PLA-HT’s post-annealed heat resistance is only one dimension of acceptance; leachable migration and sterilization compatibility dominate the technical evaluation. Cytotoxicity acceptance is characterized per ISO 10993-5:2009, sensitization per ISO 10993-10:2021, and chemical leachables per ISO 10993-18:2020. Steam autoclave sterilization at 121°C is outside the continuous-use envelope of annealed PLA-HT because moisture-induced hydrolysis at that temperature reduces molecular weight rapidly; ethylene oxide per ISO 11135:2014 and hydrogen peroxide plasma per ISO 14937:2009 are more compatible for short-cycle validation. The resin is used at 100 wt% virgin; if radiopacity is required for surgical models, 10–20 wt% barium sulfate masterbatch is added, but this degrades tensile elongation to below 3% and must be revalidated under ISO 527-1:2019. The part is deposited through a 0.4 mm stainless steel nozzle at 0.12 mm layer height, 65°C bed, and 35–40°C chamber. Dry-air thermal conditioning at 80°C for 60 min follows; surface smoothing by mechanical tumbling or controlled solvent exposure must be followed by ISO 10993-18 residual solvent testing, because incomplete evaporation can introduce cytotoxic residues. Terminal product types include external diagnostic device enclosures, surgical planning models, orthotic trial shells, and temporary instrument handles. The application boundary is explicit: SIMOGREEN PLA-HT is not implantable, not suitable for long-term skin contact without additional biocompatibility evaluation, and not food-contact approved unless separate migration testing under EU 10/2011 is performed.
Ground test mock-ups for aircraft cabin interiors must demonstrate compliance with vertical burn requirements even when the material is not flight rated. The relevant standard is 14 CFR 25.853(a) Appendix F Part I, which specifies an average char length not exceeding 6.0 in and a maximum individual char length not exceeding 8.0 in after the 12-second vertical Bunsen burner exposure. SIMOGREEN PLA-HT is compounded at 100 wt% for cosmetic mock-ups; if a halogen-free phosphorus-based flame retardant masterbatch is required to meet burn criteria, addition is typically 5–10 wt%, but this may reduce HDT by 5–10°C per ASTM D648-18 and must not be assumed without batch-specific validation. The large-format tool builds with a 0.6 mm nozzle, 0.25 mm layer height, 60°C bed, and 50°C heated chamber; oversized duct sections are segmented, bonded with structural adhesive or solvent welding, and then treated at 90°C for 60 min in a constrained fixture to prevent seam separation. Terminal parts produced under this protocol include cabin air duct prototypes, galley mock-up panels, seat assembly alignment fixtures, and interior trim prototypes for ground evaluation. Operational limitation: these components are not certified for flight use and must be restricted to non-structural, ground-test applications where long-term UV stability is not a requirement.
In consumer appliance service environments, high-temperature dimensional stability and resistance to detergent-induced hydrolysis are the two critical screening parameters for SIMOGREEN PLA-HT. Household appliance safety is evaluated per IEC 60335-1:2020; external parts that can be touched and are not protected from thermal exposure may require a ball pressure test per IEC 60695-10-2:2014 at 125°C, which annealed PLA-HT can satisfy only if the 2 mm test specimen is fully crystallized. Glow-wire testing per IEC 60695-2-11 at 750°C is often applied to live parts. The resin is printed at 100 wt%; adjacent to heating elements, designers should not rely on unfilled PLA-HT above 110°C continuous, and a 10 wt% glass-fiber reinforced variant may be considered only after supplier confirmation. Printing parameters include a 0.4 mm nozzle, 0.20 mm layer height, 60°C bed, and 40°C chamber. Thermal stabilization at 90°C for 45 min is required in a constrained fixture, followed by inspection for delamination. Terminal products include coffee maker internal brackets, vent deflectors, detergent drawer substitutes, oven knob prototypes, and washing machine dispenser clips. Continuous immersion in hot water above 70°C is outside the operational envelope because hydrolytic chain scission leads to rapid loss of impact resistance; published data for this specific configuration is limited, and application-specific validation is required.
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SIMOGREEN PLA-HT Heat Resistant 3D Printing Polylactic Acid is a nucleated polylactide monofilament intended for fused filament fabrication environments that require elevated-temperature dimensional stability after a controlled post-print crystallisation step. The model designation PLA-HT refers to a heat-resistant PLA class; it is not a single unified property sheet, and published open-literature data for this exact formulation is limited. Spool-level certificates of analysis should therefore be obtained for filament diameter, ovality, melt volume-flow rate, moisture content, ash content, and residual lactide content before release to production. Unless otherwise stated, numerical ranges presented here represent published data for comparable semicrystalline PLLA and nucleated PLA formulations verified under the cited standards, not lot-specific SIMOGREEN PLA-HT guarantees.
Moisture control is the first processing boundary. PLA-HT absorbs atmospheric water, and the ester linkages of the polylactide chain undergo hydrolytic scission when melt processing occurs above 200 °C in the presence of retained moisture. In production-scale material extrusion, moisture above 250 ppm by Karl Fischer titration produces splay, foamy extrusion, filament bubbling, and a measurable increase in melt volume-flow rate because the molecular weight distribution shifts to shorter chains. Filament should be dried in a desiccant air dryer at 50–60 °C for 8–12 h, with supply air dew point below −40 °C. Storage in sealed aluminium laminate bags with silica gel or molecular sieve desiccant is required when ambient relative humidity exceeds 60 %. If the certificate of analysis does not report residual moisture, request water content according to ISO 15512:2019. The same dryer setpoint should not exceed 65 °C, because spool cores and filament winding can deform at higher temperature if the polymer softens.
On direct-drive fused filament fabrication systems, the extruder should be equipped with a hardened steel hobbed gear rather than brass, particularly if the PLA-HT grade contains mineral nucleators or inorganic fillers. Hobbed-gear slip from filament ovality is a common batch-to-batch field failure; incoming monofilament should be inspected with a two-axis micrometer over a 3 m sample length, and lots with ovality above 0.05 mm should be quarantined for lower-speed processing. Build platform adhesion for PLA-HT is maintained on polyetherimide sheet at 90–110 °C or on glass treated with a polyvinylpyrrolidone-based adhesive at 60–70 °C. An enclosed build volume at 45–55 °C is not mandatory for small specimens but reduces lateral warping for parts with wall lengths above 100 mm. If the first layer is printed at a width greater than 150 % of the nozzle diameter, excessive heat input can delay solidification and promote edge lifting.
Unannealed PLA-HT emerges from the nozzle largely amorphous because the cooling rate in material extrusion is too fast for substantial PLLA crystallinity. The amorphous phase exhibits heat deflection under 1.82 MPa load in a range of 50–56 °C when measured by ASTM D648-18 Method A or ISO 75-2:2013 method A. The nucleating package in PLA-HT is intended to generate a high density of heterogeneous nuclei during a subsequent thermal anneal. When printed parts are held under physical constraint at 100–120 °C for 30–60 min, cold crystallisation develops α-phase PLLA lamellae. The crystalline density of approximately 1.29 g/cm³ versus amorphous density near 1.24 g/cm³ produces volumetric contraction. Published studies on comparable nucleated PLLA formulations report post-anneal HDT-B values of 120–140 °C at 0.45 MPa, but part geometry, constraint pressure, and oven ramp rate can shift the result by more than 10 °C. Lot-specific HDT must be assessed on printed or machined test bars according to ISO 75-2:2013 method B; open-literature values for SIMOGREEN PLA-HT specifically are limited.
Thermal analysis by ISO 11357-2:2020 for glass transition and ISO 11357-3:2018 for crystallisation is recommended to establish lot-specific onset temperatures. Nucleated PLA typically shows a glass transition near 55–60 °C and a cold crystallisation exotherm that may begin near 90–110 °C. The annealing hold must be above the crystallisation onset but below the point where rapid spherulitic growth produces brittle boundaries between printed roads. Visible whitening after annealing indicates localised crystallisation has occurred unevenly; the part should be sectioned for internal void inspection.
The annealing profile is a process conflict. If the hold temperature is below 100 °C, crystallisation kinetics are slow and the desired HDT shift may be incomplete. If the hold temperature exceeds 120 °C, the part can slump under its own mass, and uncontrolled exothermic cold crystallisation can locally overshoot by 5–10 °C. The oven should be ramped at 2–3 °C/min to the hold temperature and cooled at ≤ 2 °C/min to below 60 °C before fixture release. For wall thicknesses above 6 mm, the hold time should be extended until the core reaches the hold setpoint; thermocouple-instrumented dummy parts are preferable to fixed timer values. Free-standing annealing of a 100 mm bar can produce length reduction of 1.5–2.5 % in the build plane, with anisotropic contraction depending on raster orientation. Fixture plates, nested carbon-fibre jigs, or mechanically restrained sand beds are therefore used to transfer annealed dimensions from a specified pre-compensation model.
The melt temperature window is bounded on the cold side by premature crystallisation and on the hot side by thermal degradation. Heat-resistant PLA grades are frequently specified in a melt volume-flow rate range of 6–12 g/10 min at 210 °C under 2.16 kg load according to ISO 1133-1:2022. Nucleating agents and optional mineral fillers can reduce observable flow relative to standard unfilled PLA, even when the MVR falls within the same nominal range. The nozzle setpoint should begin near 205–215 °C and be adjusted in 5 °C increments until layer adhesion meets predetermined tensile criteria. Residence time above 230 °C should be minimised; exposure above 250 °C accelerates random chain scission, lactide regeneration, and brown discoloration. If the extruder pauses for more than 60 s with the hot end at processing temperature, a purge of at least 100 mm is recommended to eject heat-soaked resin before resuming the part.
Print geometry also controls the practical thermal history. Layer heights from 0.12 mm to 0.28 mm are usable on a 0.4 mm standard nozzle; the upper end improves interlayer diffusion because each deposited track carries more heat into the previous layer. Print speeds of 30–60 mm/s on direct-drive systems and 20–40 mm/s on Bowden systems reduce extruder pressure pulsation. Retraction distance should remain below 2 mm on direct-drive systems to avoid drawing semi-crystalline melt into the heat break, where solidification can cause plugging. For walls below 1.6 mm, cooling fan speed should be limited to 40–60 % of maximum; excessive quenching suppresses interlayer bonding and magnifies differential shrinkage. A hardened or plated brass nozzle is acceptable, but the nozzle orifice should be inspected for accumulated nucleator residue at intervals of 20–40 h of print time. On machines with abrasive filament sensors, the lot-specific ash content from the certificate of analysis can be used to set maintenance intervals.
PLA-HT is used where an existing PLA line produces dimensionally stable parts for ambient service but begins to fail at localized heat sources: interior glazing surfaces in parked vehicles, LED fixture housings, or dishwasher trays. Standard PLA parts soften progressively above 50–55 °C, while annealed PLA-HT parts can retain shape under intermittent exposure up to 100–120 °C, provided the service load remains below the temperature-dependent tensile modulus of the partially crystallized matrix. Creep resistance should be evaluated under long-term load according to ISO 899-1:2017; semicrystalline PLA does not reach the creep modulus of high-temperature amorphous thermoplastics such as polysulfone or polyethersulfone. The grade is not a drop-in replacement for ABS, ASA, or polycarbonate in continuous service above 120 °C, under hot oil, or where notched Izod impact above 4 kJ/m² per ASTM D256-23 is required without modification.
Mechanical verification after annealing should follow ASTM D638-14 for Type IV specimens at 5 mm/min or ISO 527-2:2012 at 5 mm/min, with conditioning per ISO 291:2008. Measured tensile modulus rises with crystallinity, but elongation at break may fall to 2–5 %; this is an inherent trade-off. If impact requirements exceed 4 kJ/m² notched Izod, an impact-modified PLA-HT grade or a different polymer class should be evaluated. Chemical compatibility is limited to aqueous environments at pH between 4 and 8; prolonged exposure to strong acids, strong bases, or ester solvents degrades the polylactide backbone. Avoid combination with amine-based additives or uncured amine-epoxy systems that can catalyse ester cleavage. If the printed article is used for food-contact or skin-contact applications, compliance must be verified for the finished article under FDA 21 CFR 177.1520 or EU 10/2011, because migration behaviour depends on the full nucleator, colorant, and surface porosity of the printed part. Published migration data for this specific formulation is limited, and PLA base resin compliance does not automatically extend to the compounded filament.
| Parameter | Standard unfilled PLA | Nucleated PLA-HT class | ABS reference |
|---|---|---|---|
| Heat deflection temperature at 0.45 MPa | 55–65 °C as printed (ISO 75-2) | 120–140 °C after constrained anneal (ISO 75-2) | 85–105 °C as printed (ISO 75-2) |
| Annealing volume contraction in build plane | 0.3–0.8 % | 1.5–2.5 % | Not required |
| Tensile modulus | 3.0–3.5 GPa (ASTM D638-14) | 3.2–4.0 GPa after annealing (ASTM D638-14) | 2.0–2.6 GPa (ASTM D638-14) |
| Service limit | ≤55 °C | ≤110 °C intermittent, load-dependent | ≤85 °C |
Compliance documentation should include REACH SVHC declaration under Regulation EC 1907/2006, RoHS Directive 2011/65/EU Annex II, and, where relevant, food-contact status under FDA 21 CFR 177.1520 or EU 10/2011. Biobased carbon content can be assessed by ASTM D6866-22; the result is not a performance specification. Incoming inspection should measure filament diameter with a two-axis micrometer over a 3 m sample length, reject lots with ovality above 0.05 mm, and track melt volume-flow rate shift after drying as a hydrolysis indicator. Dimensional test parts should be conditioned at 23 °C and 50 % RH according to ISO 291:2008 before tensile testing, because PLA absorbs water and shows plasticization at high humidity. Print parameters should be locked only after measuring annealed tensile strength and HDT on a single build orientation; changing raster angle from ±45° to 0° alters failure mode from shear-dominated to interlayer-dominated.
