Polyamide 4/6 - Nylon 4/6 - PA 4/6

Polymer Type



Higher heat distortion temperature than Nylon 6 or Nylon 6/6.  Higher cyrstallinity than Nylon 6 or Nylon 6/6, leading to better chemical resistance, particularly to acidic salts.  Short cycle times.


Similar moisture absorption to Nylon 6/6, but dimensional increase is less.  High processing temperature.


General mechanical parts as for Nylon 6 and Nylon 6/6, but where better thermal stability is required.  In fibre form, for rubber reinforcement.

Typical Properties

Property Value
Density (g/cm3) 1.18
Surface Hardness SD85
Tensile Strength (MPa) 100
Flexural Modulus (GPa) 1
Notched Izod (kJ/m) 0.1
Linear Expansion (/°C x 10-5) 7.4
Elongation at Break (%) 30
Strain at Yield (%) 11
Max. Operating Temp. (°C) 100
Water Absorption (%) 2.3
Oxygen Index (%) 22
Flammability UL94 V2
Volume Resistivity (log ohm.cm) 15
Dielectric Strength (MV/m) 20
Dissipation Factor 1 kHz 0.35
Dielectric Constant 1 kHz 11.0
HDT @ 0.45 MPa (°C) 220
HDT @ 1.80 MPa (°C) 160
Material. Drying hrs @ (°C) 3 @ 95
Melting Temp. Range (°C) 290 - 300
Mould Shrinkage (%) 1.8
Mould Temp. Range (°C) 40 - 80

Source : Abstracted from Plascams

For more information on Plascams please visit RAPRA Technology Ltd.


  1. Arnaldo Rizzo Arnaldo Rizzo Italy says:

    Yes, I would to know if polyamide 6 or 6,6 sutures are completely resorbed after many years in vivo by hydrolysis.

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