PA6.6 – Polyamide 6.6 PA66 LGF50
AKROMID® A28 LGF 50 9 black (7705)AKROMID® A28 LGF 50 9 black (7705) is an easy flowing PA6.6 with 50% long glass fibre reinforcement which leads to an extraordinary high stiffness and strength even at high temperature. The material distinguishes itself due to its isotropic mechanical properties as well as increased creep resistance and higher heat deflection temperature.
The excellent fatigue performance, high energy absorption in the event of a crash and low shrinkage make it the product of your choice for technical parts e.g. oil pan.
Properties
Tensile Modulus Tensile Strength Impact StrengthFeatures
-
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 45 kJ/m²
Izod-impact strength (23°C | ISO 180/1U) d.a.m. 90 kJ/m²
-
Thermal Properties
Temperature of deflection under load HDT/A (1,8 MPa | ISO 75) 260 °C
Glass transition temperature (DSC, 2nd heating | DIN EN ISO 11357-2) 60 °C
Melting temperature (DSC, 10K/min | DIN EN ISO 11357-3) 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
-
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 %
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.
 |
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 | |
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.
