PEN Biocompatible Filament - Natural - 1kg

Approved up to 24-hour contact with skin and tissue and, where applicable, indirect with blood
• Engineering-Grade Performance: Combines chemical resistance, heat stability, and low extractable potential
• Superior Printability: Excellent bed adhesion, minimal warping, and fast print speeds at 270~285°C
• Accessible: Delivers high-performance benefits without needing ultra-premium 3D printers
• Precision Manufacturing: Available in 1.75mm and 2.85mm diameters with strict tolerances, utilizing processes similar to biocompatible tubing

Characteristics and Benefits of PEN-Natural in FDM Applications

• Exceptional chemical resistant and barrier properties for demanding environments
• Suitable for applications requiring autoclave, gamma, and EtO sterilization compatabiity
• FDA food-contact approved: meets USP 88 VI and USP 87 for bio-inertness
• With optimised printing conditions, enables water-tight and low-vacuum suitability without post-processing


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Material Specifications

• Tensile Strength (MPa), XY: 75.2, YZ: 51.9, ZX: 22.2 (ISO 527-2, 50mm/min)
• Elongation (%), XY: 10.1, YZ: 2.4, ZX 0.5 (ISO 572-2, 50mm/min)
• Tensile Modulus, XY: 2717, YZ: 2435, ZX: 2534 (ISO 572-2, 1mm/min)
• Flexural Strength (MPa), XY: 100.3, ZX: 43.1 (ISO 178:2019, 2mm/min)
• Flexural Modulus (MPa), XY: 2263, ZX: 1976 (ISO 178:2019, 2mm/min)
• Izod impact Strength (kJ/m²), XY: 3.1, ZX: 1.9 (ISO180:2019, notched)
• HDT (pre-annealed): 130°C (ISO752/B, 0.45MPa)
• HDT (pre-annealed): 121°C (ISO752/B, 1.82MPa)

PEN Natural - Biocompatible

• USP<88>Class VI
• USP<87>
• USP<661.1>
• ISO 10993-4 -10
• FDA 21 CFR 177
• EU 10/2011
• EU 1935/2004
• ADCF
• RoHS
• REACH

Usage Tips

• Autoclave steralisation at 121°C for 20mins, or 132°C for 10. Some shirnkage has been observed - by 3% in the X-Y only. Scale your print for accurate dimensions
• Annealing: For parts exposed to repeated autoclaving or prolonged heat and humidity, annealing can significantly improve the performance and reliability of 3D-printed components.
For PEN Natural, this means:
- Raises heat resistance from ~125 °C to ~165 °C
- Improves tensile strength by ~5–10%
- Increases long-term hydrolysis resistance by ~35% at 80 °C
- Crystallization is visible — the part turns white during annealing

Method 1 – Oven Annealing
• Place the part in an oven and heat to 160 °C
• Hold at 160 °C for 20 minutes
• Turn off the oven and let the part cool slowly inside to 100 °C (about 20–25 minutes)
- Dimensional changes:
- XY shrinkage: ~10%
- Z growth: ~7%

Method 2 – Sand Bath Annealing (for better dimensional control)
• In a metal container, spread 5–7 mm of medical-grade silica sand at the bottom
• Place the part on the sand bed and cover it completely with loose sand (do not compact)
• Heat the container to 165 °C and hold for 30 minutes
• Let the part cool slowly inside to 100 °C (about 35 minutes)
- Dimensional changes:
- XY shrinkage: <5%
- Z growth: <3%

?? These annealing conditions are based on a part size of 60 mm × 10 mm × 10 mm




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This product has no specific warranty. Bilby 3D will honor obligations under Australia Consumer Guarantee regulations if and where they apply to this product

10% Bulk Discount available; Order 10 or more filament at once, Prepay for your order, Phone 1800-847-333 to order. Conditions apply.

Technical Data Sheet