Evonik Filament - INFINAM® PEEK 9359 - Natural (1.75mm; 0.5kg)

EvonikSKU: 57421


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Evonik INFINAM® PEEK 9359

The Evonik PEEK filament is specifically designed for use with extrusion-based 3D printing technology, such as FFF or FDM. The filament is carefully manufactured to ensure consistent diameter and excellent print quality, allowing for precise and reliable printing results.

One of the unique benefits of PEEK filament is its high temperature resistance, making it suitable for printing parts that need to withstand extreme heat. With a glass transition temperature of a152°C, PEEK can withstand long term temperatures up to 250°C  or short term temperature up to 300°C, allowing for the creation of parts that can be used in harsh environments.

In addition to its high temperature resistance, PEEK filament is also highly resistant to most organic and inorganic chemicals and only dissolves in concentrated sulfuric acid and nitric acid, making it a great choice for applications that involve exposure to corrosive substances. Its excellent wear resistance also makes it ideal for use in high-stress applications.

Unique Properties:

Fused filament fabrication (FFF) of high-temperature, aerospace-grade thermoplastics like PEEK has made significant progress in recent years and has become an established process for 3D-printing of complex parts. 3D printed parts made of PEEK exhibit outstanding properties like: 

  • Excellent performance in heat resistance and chemical resistance
  • Good warpage resistance
  • Inherently flame retardant with low smoke and toxicity
  • Resistant to gamma radiation, 250C steam and hydrolysis
  • Excellent wave transmission performance like metal


The Evonik PEEK filament provides an unique crystallization which gives significantly improved adhesion between layers in the vertical direction. Compared to 3D printed stainless-steel parts, PEEK-based 3D printed objects are 80% lighter in weight and 30% tougher with excellent fatigue resistance making applicable as substitution to 3D printing metal. Due to superior wear resistance and low sliding friction of PEEK lightweight structural parts can be manufactured easily. 


Mechanical Properties ISO  Value (Dry) Unit Test Standard
Tensile Modulus 3600
MPa ISO 527
Yield Stress
MPa ISO 527
Yield Strain
% ISO 527
Stress at Break
MPa ISO 527
Charpy Impact Strength (+23°C)
ISO 179/1eU
Charpy Impact Strength (-30°C)
N kJ/m² ISO 179/1eU
Charpy Notched Impact Strength (+23°C) 7 kJ/m² ISO 179/1eA
Type of Failure C -
Charpy Notched Impact Strength (-30°C) 6 kJ/m² ISO 179/1eA
Type of Failure C -


Thermal Properties  Value (Dry) Unit Test Standard
Melting Temperature
ISO 11357-1/-3
Glass Transition Temperature
ISO 11357-1/-2
Temp. of Deflection under Load A (1.80 MPa) 155 °C ISO 75-1/-2
Temp. of Deflection under Load B (0.45 MPa) 205 °C ISO 75-1/-2


Physical Properties  Value (Dry) Unit Test Standard
kg/m² ISO 1183
Filament Diameter 1.75 mm -


Burning Behavior  Value (Dry) Unit Test Standard
Behavior at 1.5 mm nom. thickn.
ISO 60695-11-10
Thickness tested 1,6
mm -


Rheological Properties  Value (Dry) Unit Test Standard
Melt volume-flow rate (MVR)
ISO 1133


Product Information (TDS)


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