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Preliminary datasheet

PA6.6 – Polyamide 6.6 PA66 LGF50

AKROMID® A28 LGF 50 9 black (7705)

18000 MPa

270 MPa

95 kJ/m²

AKROMID® A28 LGF 50 9 black (7705) is a 50% long glass fibre reinforced, process improved, easy flowing polyamide 6.6 with extraordinary high stiffness and strength even at high temperature and very high impact and notched impact strength at elevated and low temperature.

The material distinguishes itself due to its isotropic mechanical properties, low shrinkage, higher heat deflection temperature and very good fatigue performance

Typical applications

Technical components in the automobile and mechanical engineering industries.

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.


6 Drying time 0 - 4 h

Drying temperature (τ ≤ -30°C) 80°C

Processing moisture 0,02 - 0,1%

1 Feed section 60 - 80°C

2 Temperature zone 1 - Zone 4 270 - 300°C

3 Nozzle temperature 280 - 300°C

4 Melt temperature 280 - 300°C

5 Mold temperature 80 - 100°C

P Nach Holding pressure, spec. 300 - 800 bar

P Stau Back pressure, spec. 10 - 30 bar

Injection speed slow to medium

Screw speed 5 - 15 m/min

  • Mechanical Properties
    Tensile modulus (1 mm/min | ISO 527-2)
    d.a.m. 18000 MPa
    conditioned 14200 MPa

    Stress at break (5 mm/min | ISO 527-2)
    d.a.m. 270 MPa
    conditioned 210 MPa

    Strain at break (5 mm/min | ISO 527-2)
    d.a.m. 2 %
    conditioned 2,2 %

    Charpy impact strength (23°C | ISO 179-1/1eU)
    d.a.m. 95 kJ/m²
    conditioned 100 kJ/m²

    Charpy notched impact strength (23°C | ISO 179-1/1eA)
    d.a.m. 45 kJ/m²
    conditioned 32 kJ/m²

  • Thermal Properties
    Temperature of deflection under load HDT/A (1,8 MPa | ISO 75) 260 °C

    Melt temperature (DSC, 10K/min | DIN EN 11357-1) 262 °C

  • Flammability
    Burning rate (UL 94)
    1,6mm Wall thickness HB Class

    Burning rate (<100 mm/min) (> 1 mm Thickness | FMVSS 302) +

  • General properties
    Density (23°C | ISO 1183) 1,57 g/cm³

    Humidity absorption (70°C, 62% r.H. | ISO 1110) 1,3 - 1,5 %

    Molding shrinkage (flow | ISO 294-4) 0,3 - 0,5 %

    Molding shrinkage (transverse | ISO 294-4) 0,6 - 0,8 %

Disclaimer

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®, ICX® and PRECITE® are registered trademarks of the Feddersen Group.

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