FLEX Hard Pro is a Shore D65 TPU filament engineered for functional, high-wear parts that need genuine mechanical strength, not just flexibility. With enhanced abrasion resistance, high scratch and tear resistance, and reliable performance even at low temperatures, it's built for gears, fasteners, protective housings, and components that see repeated mechanical stress. Free of silicone, plasticisers, oils, and halogens, it delivers the durability of an engineering-grade material with the elasticity only TPU can offer.
ABRASION RESISTANCE
LOW-TEMPERATURE FLEXIBILITY
HIGH SHORE HARDNESSFLEX Hard Pro
SKU: 9010241601226
Material
FLEX Hard Procolor
black | RAL 9017Filament diameter
1.75 mmCoil
0.75 kgincl. VAT
34,98 €
incl. VAT
34,98 €
In Stock
Made in Austria
Secure Checkout With
Engineered TPU for High-Wear Applications
IDEAL FOR
- Gears and Mechanical Components
- Fasteners and Clips
- Protective Housings
- High-Wear Functional Parts
FLEX Hard Pro Highlights
ABRASION RESISTANCE
Very abrasion and wear resistant, tested to ISO 4649-A.
TEAR RESISTANCE
High tear resistance, tested to ISO 34-1.
LOW-TEMPERATURE FLEXIBILITY
Maintains flexibility even at low temperatures.
HIGH SHORE HARDNESS
Shore hardness D65, with the typical elasticity of TPU.
FITS ANY PRINTER, ANY SYSTEM
From standard FDM printers to AMS and multi-material setups, Extrudr filament is built to work reliably with the printer you already own.
MADE IN AUSTRIA
From the Austrian Alps, every Extrudr spool is manufactured with care, precision and strict EU standards.
Nozzle temperature 220–260 °C
Build plate temperature 50–90 °C
Surface preparation Glue
Speed 120 mm/s
Cooling fan 60-100 %
Enclosed chamber required No
Hardened nozzle required No
Max. volumetric flow rate 8mm³/sec
Recommended settings for printers with a 0.4 mm nozzle. Max. 50% layer height. Optimal settings may vary between printers and are also dependent on environmental factors.
Drying temperature 60 °C
Drying time 4-8h
Our material profiles make printing easier and more reliable. The profiles are perfectly optimised for Extrudr filaments and deliver perfect results straight away. Simply select your printer and material, import the profile into your slicer, and you’re ready to go.
| Mechanical Properties | Method | Value | Rating |
|---|---|---|---|
| Tensile modulus (Young's modulus) | ISO 527-1 | 350 MPa | Typical |
| Tensile strength at yield | ISO 527-1 | 59 MPa | Very Good |
| Tensile stress at break | ISO 527-1 | 59 MPa | Excellent |
| Elongation at break | ISO 527-1 | > 300 % | - |
| Flexural modulus | ISO 178 | 350 MPa | Typical |
| Charpy notched impact strength (+23°C) | ISO 179-1eA | No Break (NB) | - |
| Charpy unnotched impact strength (+23°C) | ISO 179-1eU | No Break (NB) | - |
| Thermal Properties | Method | Value | Rating |
|---|---|---|---|
| Vicat softening temp. (VST/B50) | ISO 306 | ~110 °C | Very Good |
| Melting point (Tm) | ISO 3146-C | 200–240 °C | - |
| Glass transition temp. (Tg) | ISO 11357-1 (DSC) | -25 °C | - |
| Thermal decomposition temp. | - | 220 °C | Typical |
| CLTE — flow direction | - | 1.5 cm/cm/°C | Typical |
| Physical Properties | Method | Value | Rating |
|---|---|---|---|
| Density | ISO 1183-1 | 1.22 g/cm³ | - |
| Water absorption (saturation, 23°C) | - | 0.8 % | - |
| Mould shrinkage | ISO 294-4 | 0.8–1.2 % | - |
| Special Properties | Method | Value | Rating |
|---|---|---|---|
| UV resistance | - | Yes | - |
| Chemical resistance | - | Yes | - |
| Abrasion resistance | - | 18 mm³ | - |
PRINTING & COMPATIBILITY
FLEX Hard Pro is compatible with all standard FDM printers on the market.
Yes. FLEX Hard Pro is fully compatible with AMS (Automatic Material System) solutions, including the Bambu Lab AMS.
No. FLEX Hard Pro does not need to be printed with a hardened nozzle.
Yes. FLEX Hard Pro is a hygroscopic material and should be dried before printing to achieve optimal print quality. We recommend drying for 12 hours at 60°C.
MATERIAL PROPERTIES
FLEX Hard Pro is harder than FLEX Hard (Shore D65 vs. D58) and stretches less (345% vs. 480% elongation at break). It adds high abrasion, scratch, and tear resistance for parts that see friction and repeated stress. Both reach a Vicat softening temperature of 140°C.
Yes. FLEX Hard Pro maintains its flexibility even at low temperatures.
Yes. FLEX Hard Pro offers good chemical resistance, suited to demanding industrial applications.
CERTIFICATION & COMPLIANCE
No. FLEX Hard Pro is not certified for food contact.
Compliance applies to the raw material, not the finished printed part. Any part intended for a regulated application must undergo separate certification by an accredited third-party laboratory. Requirements vary depending on intended use and applicable standards.
CARE & STORAGE
Store FLEX Hard Pro in a dry room at room temperature (18–27°C / 65–80°F). Stored neatly, it is protected from dust and sunlight.
When stored correctly, FLEX Hard Pro has a shelf life of 2 years.
–
5
0
4
0
3
0
2
0
1
0
Latest reviews
Other customers also bought
