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Preliminary datasheet

PA6 – Polyamide 6 PA6 FR

AKROMID® B3 1 FR nature (6437)

3500 MPa

85 kJ/m²

AKROMID® B3 1 FR natural (6437) is a nonreinforced, heat stabilized and halogen free flame retardant polyamide 6 listed at UL in all colors

Typical applications

Housings, fasteners and cable connectors in the electro- and electronic 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 time2 - 4 h
Drying temperature80°C
Processing moisture0,02 - 0,08%
1Feed section60 - 80°C
2Temperature zone 1 - Zone 4220 - 260°C
3Nozzle temperature230 - 270°C
4Melting temperature240 - 270°C
5Mold temperature60 - 80°C
P NachHolding pressure, spec.300 - 800 bar
P StauBack pressure, spec.30 - 100 bar
Injection speedmedium
Screw speed5 - 10 m/min
  • Mechanical Properties
    Tensile modulus (1 mm/min | ISO 527-2)
    d.a.m.3500 MPa
    conditioned1400 MPa
    Stress at yield (50 mm/min | ISO 527-2)
    d.a.m.85 MPa
    conditioned40 MPa
    Strain at break (50 mm/min | ISO 527-2)
    d.a.m.>10 %
    conditioned>50 %
    Charpy impact strength (23°C | ISO 179-1/1eU)
    d.a.m.85 kJ/m²
    conditionedn.b. kJ/m²
    Charpy notched impact strength (23°C | ISO 179-1/1eA)
    d.a.m.5 kJ/m²
    conditioned11 kJ/m²
  • Thermal Properties
    Melting temperature (DSC, 10K/min | DIN EN 11357-1)220 °C
  • Flammability
    Burning rate UL 94 0,4mm Wall thickness (UL 94)V0 Class
    Burning rate UL 94 0,8mm Wall thickness (UL 94)V0 Class
    Burning rate UL 94 1,6mm Wall thickness (UL 94)V0 Class
    Burning rate UL 94 3,2mm Wall thickness (UL 94)V0 Class
    GWFI 0,4 mm Wall thickness (IEC 60695-2-12)960 °C
    GWFI 0,8 mm Wall thickness (IEC 60695-2-12)960 °C
    GWFI 1,6 mm Wall thickness (IEC 60695-2-12)960 °C
    GWFI 3,2 mm Wall thickness (IEC 60695-2-12)960 °C
    GWIT 0,4 mm Wall thickness (IEC 60695-2-12)775 °C
    GWIT 0,8 mm Wall thickness (IEC 60695-2-12)750 °C
    GWIT 1,6 mm Wall thickness (IEC 60695-2-12)750 °C
    GWIT 3,2 mm Wall thickness (IEC 60695-2-12)775 °C
    HWI 0,4 mm Wall thickness (UL 746A)4 PLC
    HWI 0,8 mm Wall thickness (UL 746A)4 PLC
    Oxygen index (ISO 4589-2)>32 %
    Protection Train (EN 45545-2)R22/R23/24/26 HL3
  • General properties
    Density (23°C | ISO 1183)1,17 g/cm³
    Molding shrinkage (flow | ISO 294-4)0,9-1,1 %
    Molding shrinkage (transverse | ISO 294-4)1,0-1,2 %
  • Electrical Properties
    Comparative tracking index (Test liquid A | IEC 60112)>600
    Dieletric strength (3 mm | IEC 60243)10 kV/mm


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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