Polyamide 12 (PA12)

Alternative and trade names
Rilsamid®, Vestamid®, Grilamid®


Its key features include:

  • Minimal water absorption: molded parts show almost no dimensional changes with variation in atmospheric humidity
  • Extraordinarily high impact resistance and Charpy notched impact strength, even well below freezing point
  • Good to excellent resistance to greases, oils, fuels, hydraulic fluids, and many solvents as well as to salt solutions and other chemicals
  • Excellent resistance to stress cracking, even for metal parts encapsulated by injection molding or embedded into the plastic
  • Excellent abrasion resistance
  • Low dry sliding friction coefficient as compared with steel, polybutylene terephthalate, polyacetal, and other materials
  • Noise and vibration damping properties
  • Excellent resistance to fatigue caused by frequent load change
  • Easy processability
  • Properties


    Density ρ

    1.01 - 1.03 g/cm³ at 20 °C


    Elastic modulus E

    0.9 - 1.2 GPa at 20 °C

    Elongation A

    200 - 400 % at 20 °C

    Impact strength, Charpy notched Ivnot

    10 - 20 kJ/m² at 20 °C

    Impact strength, Charpy unnotched Iunnot

    no break

    Max allowed stress σmax

    35 - 45 MPa at 20 °C

    at 10-15% strain


    Coefficient of thermal expansion α

    1E-4 - 1.8E-4 1/K at 20 °C


    UL 94 HB

    Max service temperature, long Tmaxlong

    70 - 80 °C

    Max service temperature, short Tmaxshort

    140 - 150 °C

    Melting point Tm

    175 - 180 °C

    Specific heat capacity cp

    1260 J/(kg·K) at 20 °C

    Thermal conductivity λ

    0.2 - 0.23 W/(m·K) at 20 °C


    Dielectric constant εr

    3.1 - 4.7 [-] at 20 °C

    Electrical resistivity ρel

    1.00E+9 - 3.00E+12 Ω·m at 20 °C




    Technological properties

    Application areas

    Air ducts, cable sheathing, heel shells of ski boots

    Processing methods

    Injection molding, extrusion, laser sintering, coating

    This material data has been provided by M-Base.

    All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
    Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.