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Preliminary datasheet

PK – Polyketone PK GF50

AKROTEK® PK-VM GF 50 black (5394)

14500 MPa

160 MPa

50 kJ/m²

AKROTEK® PK-VM GF 50 black (5394) is a 50% glass fibre reinforced, low viscous polyketone with very high stiffness and strength.

Typical applications

Components in mechanical engineering and the automotive industry.

Processing information

The listed values are recommendations. Higher values should be used for higher glass loadings. We recommend only de-humidifying or vacuum dryers. Extensive drying can cause filling problems and surface defects.

6Drying time0 - 4 h
Drying temperature80°C
Processing moisture0,02 - 0,1%
1Feed section60 - 80°C
2Temperature zone 1 - Zone 4220 - 260°C
3Nozzle temperature230 - 260°C
4Melting temperature230 - 260°C
5Mold temperature60 - 120°C
P NachHolding pressure, spec.300 - 800 bar
P StauBack pressure, spec.30 - 70 bar
Injection speedmedium to high
Screw speed8 - 15 m/min


The molding machine needs to be purged with polyolefines before and after processing of AKROTEK® PK! There is a risk of cross linking caused by reactions with POM or PA as well as unsuitable master batches! Cross linking is visible through dark spots! In this case purge immediately with polyolefines.

  • Mechanical Properties
    Tensile modulus (1 mm/min | ISO 527-2)
    d.a.m.14500 MPa
    conditioned14000 MPa
    Stress at break (5 mm/min | ISO 527-2)
    d.a.m.160 MPa
    conditioned140 MPa
    Flexural modulus (2 mm/min | ISO 178)
    d.a.m.13500 MPa
    Flexural strength (2 mm/min | ISO 178)
    d.a.m.210 MPa
    Charpy impact strength (23°C | ISO 179-1/1eU)
    d.a.m.50 kJ/m²
    conditioned35 kJ/m²
    Charpy notched impact strength (23°C | ISO 179-1/1eA)
    d.a.m.15 kJ/m²
    conditioned15 kJ/m²
  • Thermal Properties
    Temperature of deflection under load HDT/A (1,8 MPa | ISO 75)220 °C
    Melting temperature (DSC, 10K/min | DIN EN 11357-1)220 °C
  • Flammability
    Burning rate UL 94 1,6mm Wall thickness (UL 94)HB Class
    GWFI 0,8 mm Wall thickness (IEC 60695-2-12)725 °C
    GWFI 1,6 mm Wall thickness (IEC 60695-2-12)725 °C
  • General properties
    Density (23°C | ISO 1183)1,65 g/cm³
    Humidity absorption (70°C, 62% r.F. | ISO 1110)0,4-0,5 %
    Molding shrinkage (flow | ISO 294-4)0,3 %
    Molding shrinkage (transverse | ISO 294-4)0,6 %
  • Electrical Properties
    Comparative tracking index (Test liquid A | IEC 60112)600


All specifications and information given on this website are based on our current knowledge and experience. A legally binding promise of certain characteristics or suitability for a concrete individual case cannot be derived from this information. The information supplied here is not intended to release processors and users from the responsibility of carrying out their own tests and inspections in each concrete individual case. AKRO®, AKROMID®, AKROLEN®, AKROLOY®, AKROTEK® and ICX® are registered trademarks of the Feddersen Group.

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