Polymaker™ HT-PLA 1.75mm High-Temperature PLA Filament

Polymaker™ HT-PLA is a high-performance PLA filament engineered for applications requiring greater heat resistance than standard PLA while retaining the familiar ease of PLA printing. Designed to maintain its shape under elevated temperatures, HT-PLA can withstand temperatures up to 150°C under its own weight, making it well suited for functional parts exposed to elevated temperatures.

HT-PLA prints using standard PLA-style settings and does not require specialized printer upgrades or a heated chamber. With printing speeds up to 300 mm/s, it is also designed for high-speed FDM printing while maintaining excellent surface quality and dimensional stability.

For applications requiring increased heat stability, HT-PLA can be annealed at 80–100°C for 30 minutes, with 100°C recommended by Polymaker. Annealing can improve the material's heat stability and HDT performance.

Key Benefits

• High-temperature PLA formulation

• Heat resistance up to 150°C

• High-speed printing up to 300 mm/s

• Prints using standard PLA settings

• Easy to print

• No heated chamber required

• No post-processing required for typical applications

• Excellent surface quality

• Minimal shrinkage

• Available in 14 colors

• Compatible with standard FDM 3D printers

Typical Applications

• Functional prototypes

• Automotive components

• Outdoor components

• Heat-exposed parts

• Engineering models

• Mechanical components

• Fixtures and tooling

• Housings and enclosures

• RC components

• Replacement parts

• High-temperature prototypes

• General-purpose functional parts

Polymaker™ HT-PLA is an excellent choice for applications where standard PLA is too temperature-sensitive but the easier printing characteristics of PLA are still desired. It provides a practical alternative to more difficult-to-print high-temperature materials while supporting fast, reliable FDM production.

Specifications

Material: High-Temperature PLA

Filament Diameter: 1.75 mm

Net Weight: 1 kg

Density: 1.287 g/cm³

Melting Temperature: 177.23°C

Glass Transition Temperature (Tg): 59.8°C

Vicat Softening Temperature: 156.2°C

HDT (1.8 MPa): 58.6°C

Mechanical Properties

• Young's Modulus (X-Y): 2945.75 MPa

• Young's Modulus (Z): 2596.43 MPa

• Tensile Strength (X-Y): 42.86 MPa

• Tensile Strength (Z): 20.83 MPa

• Elongation at Break (X-Y): 2.8%

• Elongation at Break (Z): 0.97%

• Bending Modulus (X-Y): 2893.46 MPa

• Bending Strength (X-Y): 74.04 MPa

• Bending Strength (Z): 29.39 MPa

• Notched Charpy Impact Strength (X-Y): 4.67 kJ/m²

Thermal Properties

• Heat Stability: Up to 150°C under its own weight

• Glass Transition Temperature: 59.8°C

• Melting Temperature: 177.23°C

• Vicat Softening Temperature: 156.2°C

• Heat Deflection Temperature (1.8 MPa): 58.6°C

• Annealing Temperature: 80–100°C

• Recommended Annealing Time: 30 minutes

• Recommended Annealing Temperature: 100°C

Recommended Print Settings

• Nozzle Temperature: 210–230°C

• Build Plate Temperature: 25–60°C

• Printing Speed: Up to 300 mm/s

• Cooling Fan: ON

• Retraction Distance: 1–3 mm

• Retraction Speed: 20–40 mm/s

• Chamber: Not required

• Drying: 60°C for 6 hours if material has absorbed moisture

• Annealing: 80–100°C for 30 minutes when increased heat stability is required

• Recommended Annealing Temperature: 100°C

• Hotend: All-metal hotend recommended

Additional Information

• HT-PLA is non-abrasive and does not require a hardened nozzle.

• HT-PLA has similar hygroscopic properties to generic PLA.

• UV and weather resistance are similar to generic PLA; no specific UV/weather modification is provided.

• HT-PLA is PLA-based and uses a multiphase composite structure.

• HT-PLA can be annealed in boiling water, although hard water may leave mineral deposits on the printed surface.

Note: Material shipment times are subject to PolyMaker warehouse stock and production times.