Evonik’s Implant‑Grade PEEK Filament: Advanced 3D‑Printing Material for Medical Implants

Evonik’s implant-grade PEEK filament for medical applications in 3D printing.

Evonik has launched a 3D‑printable PEEK filament, engineered as an implant‑grade material for medical use.

Custom plastic implants can now be fabricated using additive manufacturing that complies with ASTM F2026—the industry standard for PEEK polymers in surgical implants.

The filament, branded VESTAKEEP i4 3DF, derives from Evonik’s VESTAKEEP i4 G—a highly viscous, high‑performance polymer. Key attributes include biocompatibility, biostability, X‑ray transparency, and user‑friendly handling. It is manufactured in cleanroom environments and rigorously tested under medical‑grade quality standards.

Designed for fused filament fabrication (FFF), the naturally colored PEEK filament has a 1.75 mm diameter and comes on 250‑g or 500‑g spools, ready for use in standard FFF printers.

Alongside the implant‑grade version, Evonik provides a testing‑grade filament that matches the implant material’s properties but omits the regulatory documentation required for medical devices. This enables cost‑effective, tailored processing for individual printers.

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