Polyamide (PA, Nylon) 6/12 (612)
PA 6/12 is a thermoplastic, further classified as a polyamide (or Nylon) plastic.
The properties of PA 6/12 include two common variations. This page shows summary ranges across both of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare PA 6/12 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
1.7 to 2.2 GPa 0.25 to 0.32 x 106 psi
Elongation at Break
30 to 120 %
Flexural Modulus
1.2 to 2.2 GPa 0.17 to 0.32 x 106 psi
Flexural Strength
45 to 64 MPa 6.5 to 9.2 x 103 psi
Tensile Strength: Ultimate (UTS)
40 to 58 MPa 5.8 to 8.4 x 103 psi
Thermal Properties
Maximum Temperature: Decomposition
450 °C 830 °F
Melting Onset (Solidus)
210 °C 400 °F
Specific Heat Capacity
1590 J/kg-K 0.38 BTU/lb-°F
Thermal Conductivity
0.22 W/m-K 0.13 BTU/h-ft-°F
Other Material Properties
Density
1.1 g/cm3 66 lb/ft3
Dielectric Constant (Relative Permittivity) At 1 Hz
3.9 to 12
Limiting Oxygen Index (LOI)
25 %
Water Absorption After 24 Hours
0.25 %
Water Absorption At Saturation
3.0 %
Common Calculations
Stiffness to Weight: Axial
0.89 to 1.2 points
Stiffness to Weight: Bending
38 to 41 points
Strength to Weight: Axial
10 to 15 points
Strength to Weight: Bending
25 to 31 points
Thermal Diffusivity
0.13 mm2/s
Followup Questions
Further Reading
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
CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015