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VESTAKEEP® i4 3DF

Technical Datasheet | Supplied by Evonik

VESTAKEEP® i4 3DF by Evonik is an unfilled, high viscosity, biocompatible polyether ether ketone (PEEK) grade. Exhibits extra high purity and extended quality measures. It is suitable for processing by 3D printing, fused deposition molding and extrusion.

It offers good abrasion-, acid-, alkali-, grease- and hydrolysis resistance.
It is hydrolytically stable grade and also offers good oil-, solvent-, wear- and heat resistance.
It complies with ASTM F2026 regulations for surgical implant applications.
VESTAKEEP® i4 3DF is recommended for long term implantable medical devices.

VESTAKEEP® i4 3DF Properties

Thermal Properties

Value & Unit

Test Condition

Test Method

Vicat Softening Temperature

305 °C

(Method B, 50N)

ISO 306

Vicat Softening Temperature

335 °C

(Method A, 10N)

ISO 306

Deflection Temperature at 0.46 MPa (66 psi)

205 °C

(Method B)

ISO 75-2

Extrusion Properties

Value & Unit

Test Condition

Test Method

Drying Temperature

< 140 °C

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VESTAKEEP® i4 3DF

VESTAKEEP® i4 3DF Properties

Thermal Properties

VESTAKEEP® i4 3DF Processing Guidelines

Extrusion Properties