Specification of Parylene


Typical Specifications of Parylene C
 
  PARYLENE C VALUE ASTM METHOD
  GENERAL
Density (g/cm) 1.289 D1505
Refractive welcome 1.639  
  ELECTRICAL
Dielectric strength
(voltage breakdown)
volts/mil
5,600 volts D149
Dielectric constant   D150
60 Hz 3.15  
1 kHz 3.10  
1 MHz 2.95  
Dissipation factor   D150
60 Hz 0.020  
1 kHz 0.019  
1 MHz 0.013  
Dielectric strength
@ 25µm, short time
MV/m
220 D149
Dielectric strength
@ 25µm, step-by-step
MV/m
185 D149
Volume resistivity
@ 23ºC, 50% RH, ohms
8.8 x 1016 D257
Surface resistivity
@ 23ºC, 50% RH, ohms
1 x 1014 D257
  MECHANICAL
Tensile modulus, GPa 3.2 D882
Tensile strength, MPa 70 D882
Tensile strength, psi 10,000 D882
Yield strength, MPa 5.5 D882
Elongation to break, % 200 D882
Yield elongation, % 2.9 D882
Coefficient of  friction-static 0.29 D1894
Coefficient of  friction-dynamic 0.29 D1894
Rockwell hardness R80 D785
  THERMAL
Melting point, ºC 290ºC  
Linear coefficient of
expansion (10-5/ºC)
3.5 D696
Thermal conductivity @ 25ºC
(watts/meter-Kelvin)
0.082 C177
Specific heat @ 20ºC
cal/g/ºC
0.17  
  BARRIER
Water absorption, % (24 hr) 0.06 (.029") D570
Water vapor transmission
@ 37ºC (ng)
0.0004 D570
Gas permeability
cc-mil/100  in 2 - 24 hrs
   
N2 0.6  
O2 5  
CO2 14  
H2 110  
Moisture vapor transmission
gm-mil/100 in - 24 hrs
1