PA6.6 – Polyamide 6.6 PA66 LGF50
AKROMID® A28 LGF 50 9 black (7705)
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.
Technical components in the automobile and mechanical engineering industries.
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.
|Drying time||0 - 4 h|
|Drying temperature (τ ≤ -30°C)||80°C|
|Processing moisture||0,02 - 0,1%|
|Feed section||60 - 80°C|
|Temperature zone 1 - Zone 4||270 - 300°C|
|Nozzle temperature||280 - 300°C|
|Melt temperature||280 - 300°C|
|Mold temperature||80 - 100°C|
|Holding pressure, spec.||300 - 800 bar|
|Back pressure, spec.||10 - 30 bar|
|Injection speed||slow to medium|
|Screw speed||5 - 15 m/min|
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 45 kJ/m²
Izod-impact strength (23°C | ISO 180/1U) d.a.m. 90 kJ/m²
Temperature of deflection under load HDT/A (1,8 MPa | ISO 75) 260 °C
Glass transition temperature (DSC, 2nd heating | DIN EN 11357-1) 60 °C
Melting temperature (DSC, 10K/min | DIN EN 11357-1) 262 °C
Coefficent of linear thermal expansion, parallel (23°C bis 80°C | ISO 11359-1/2) 0,25 1,0E-4/K
Coefficent of linear thermal expansion, transverse (23°C bis 80°C | ISO 11359-1/2) 0,75 1,0E-4/K
Temperature index for 50% loss of tensile strength after 5.000h (5.000 h | IEC 60216) 150 °C
Burning rate (UL 94) 1,6mm Wall thickness HB Class
Burning rate (<100 mm/min) (> 1 mm Thickness | FMVSS 302) +
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 %
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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