Filament Sunlu PETG High-Speed Matte — Sunlu PETG H-S M G filament, green, high-speed matte finish

Sunlu PETG High-Speed Matte Filament (green) is a PETG 3D printing filament formulated for faster printing while maintaining a low-gloss, matte surface. The material is developed for high-speed extrusion at speeds from 50 to 600 mm/s, offering improved melt flow, better feeding stability and reduced visibility of layer lines. It is intended for users who need a balance of productivity, durability and a subdued professional finish.

Advantages

The filament combines PETG’s mechanical strength and chemical resistance with a matte surface that reduces reflections and improves visual uniformity. Improved melt flow supports higher printing speeds and smoother filament feeding, while the material’s toughness and elongation provide reliable performance for working prototypes and functional parts.

Suitable for

• Functional prototypes and mechanical parts
• Visual models and display pieces requiring a low-gloss finish
• Rapid iterations where shorter print times are important
• DIY and industrial applications needing chemical and impact resistance

When it may not be suitable

The increased fluidity that enables high-speed printing also makes the filament more sensitive to moisture. If the filament absorbs excessive moisture, prints can suffer from stringing, material leakage and other surface defects. Very high-temperature applications above the material’s heat deflection temperature (around 70 °C) are not recommended.

Key specifications

• Color: green
• Density: 1.26 g/cm³
• Recommended print speed range: 50–600 mm/s
• Heat deflection temperature (HDT): 70 °C
• Melting temperature: 128 °C
• Melt flow index: 4.4 g/10 min
• Tensile strength: 48 MPa
• Elongation at break: 33%
• Flexural strength: 78 MPa
• Flexural modulus: 2700 MPa
• IZOD impact strength (X–Y): 4.1 kJ/m²

How to use

Use Sunlu PETG High-Speed Matte on FDM/FFF printers with a nozzle and hotend capable of stable extrusion at the recommended melt conditions. Adjust print speed within the 50–600 mm/s range depending on your printer’s capabilities and desired surface quality. Set nozzle and bed temperatures according to your printer’s PETG guidelines and calibrate retraction to minimise stringing. Store the filament in a dry environment or sealed container with desiccant to prevent moisture uptake.

What to consider before purchase

• Ensure your printer can handle high-speed printing and stable extrusion
• Plan for proper filament storage to avoid moisture-related defects
• Expect a matte, low-gloss finish without additional post-processing
• Verify that the material properties (HDT ~70 °C) suit your application’s thermal requirements

Usage recommendations

For best results, dry the filament before printing if it has been exposed to humidity, use moderate retraction settings to reduce stringing, and test printing at incrementally higher speeds to find the optimum balance between surface quality and print time.