Polyamide (PA, Nylon) 6/6 (66, Nylon 101)
PA 6/6 is a thermoplastic, further classified as a polyamide (or Nylon) plastic.
The properties of PA 6/6 include six common variations. This page shows summary ranges across all of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare PA 6/6 to: polyamide plastics (top), all thermoplastics (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Mechanical Properties
Elastic (Young's, Tensile) Modulus
1.6 to 23 GPa 0.23 to 3.3 x 106 psi
Elongation at Break
2.8 to 46 %
Flexural Modulus
1.3 to 19 GPa 0.19 to 2.8 x 106 psi
Flexural Strength
80 to 260 MPa 12 to 37 x 103 psi
Tensile Strength: Ultimate (UTS)
60 to 240 MPa 8.7 to 34 x 103 psi
Electrical Properties
Dielectric Constant (Relative Permittivity) At 1 Hz
3.6 to 15
Dielectric Constant (Relative Permittivity) At 1 MHz
3.0 to 4.3
Dielectric Strength (Breakdown Potential)
25 to 30 kV/mm 1.0 to 1.2 V/mil
Electrical Resistivity Order of Magnitude
10 to 13 10x Ω-m
Other Material Properties
Glass Transition Temperature
50 °C 120 °F
Limiting Oxygen Index (LOI)
26 %
Maximum Temperature: Autoignition
460 °C 860 °F
Maximum Temperature: Decomposition
410 °C 770 °F
Melting Onset (Solidus)
260 °C 500 °F
Followup Questions
Further Reading
Reinforced Plastics Durability, Geoffrey Pritchard (editor), 1999
SPI Plastics Engineering Handbook of the Society of the Plastics Industry, Inc., 5th ed., Michael L. Berins (editor), 2000
Modern Plastics Handbook, Charles A. Harper (editor), 1999
Plastics Materials, 7th ed., J. A. Brydson, 1999