Black TPU Filament 93A Smartfil | 3D Printers

BLACK TPU FLEXIBLE FILAMENT 93A – PRODUCT FEATURES

• Material type: Polyurethane (TPU – Thermoplastic Polyurethane)
• Flexibility: High flexibility and elongation (93A Shore hardness)
• Color: True Black
• Filament diameter: 1.75 mm / 2.85 mm
• Density: 1.21 g/cm³ (ISO 1183)
• Mechanical Properties (XY plane):
  • Tensile strength: 12.7 MPa (ISO 527)
  • Tensile modulus: 2.7 MPa (ISO 527)
  • Flexural strength: 33.6 MPa (ISO 178)
  • Flexural modulus: 50.4 MPa (ISO 178)
  • Elongation at break (tensile): 301.4% (ISO 527)
  • Elongation at break (flexural): 15.4% (ISO 178)
  • Charpy impact strength (no notch): 75.3 kJ/m² (ISO 179)
  • Hardness: 93 Shore A (ISO 7619-1)
• Thermal Properties:
  • Vicat B (50 N, 50 °C/h): 56 °C (ISO 306)
• Printing parameters:
  • Extruder temperature: 220 – 230 ºC
  • Heated bed: 0 – 60 ºC
  • Cooling fan: 60 – 80 %
  • Material flow: 100%
  • Layer height: ≥ 0.1 mm
  • Nozzle recommendation: ≥ 0.2 mm
  • Print speed: 20 – 30 mm/s
• Net weight: 330g / 750g
• Gross weight: 456g / 975g
• Manufacturer: Smart Materials 3D (Spain)
• Brand: Smartfil
• Recyclable material

APPLICATIONS OF BLACK FLEXIBLE TPU 93A FILAMENT

This filament is ideal for printing flexible and durable parts. Common 3D printed items include:

• Shoe soles and footwear accessories
• Automotive components
• RC car bumpers and housings
• Grips and ergonomic handles

TPU FILAMENT 93A – PRINTING TIPS

Smartfil TPU 93A is engineered for optimal printability on most desktop 3D printers. With a Shore A hardness of 93, it balances flexibility with ease of extrusion.

• Use minimal retractions, especially with Bowden extruders.
• Apply adhesive spray or glue stick to improve bed adhesion.
• Keep printing speed moderate (20–30 mm/s) to ensure proper flow.
• Adjust your retraction and flow settings if stringing or under-extrusion occurs.

How is 93A different from other Shore A grades?

• 77A: Ultra-flexible, similar to silicone rubber. Very hard to print on Bowden systems.
• 85A: Softer than 93A, more stretchable, slightly trickier to print.
• 93A: Balanced flexibility and printability – ideal for most users.
• 98A: Semi-flexible, closer to a rigid feel. Easier to print than lower Shore grades.

FAQ – PRINTING FLEXIBLE TPU ON HOME 3D PRINTERS

• Q: Can I print TPU with a Bowden extruder?
• A: Yes, but it's more difficult. Direct drive systems are better. If using Bowden, reduce retractions and print slowly.
• Q: Does TPU need bed adhesion?
• A: Yes. Use a heated bed and apply glue stick or 3D printing spray.
• Q: Should I dry the filament before printing?
• A: Yes. TPU is hygroscopic and absorbs moisture. Store it in a dry box or dry it before use.
• Q: What is the ideal nozzle temperature?
• A: Between 220 – 230 ºC, depending on your printer and environment.