Polyarylsulfone (PAS)
PAS is a thermoplastic, further classified as a sulfone plastic. It has a moderately high tensile strength among the thermoplastics in the database. The graph bars on the material properties cards below compare PAS to: sulfone 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
2.7 GPa 0.39 x 106 psi
Elongation at Break
40 %
Flexural Modulus
2.8 GPa 0.4 x 106 psi
Flexural Strength
110 MPa 16 x 103 psi
Impact Strength: Notched Izod
85 J/m 1.6 ft-lb/in
Rockwell M Hardness
85
Tensile Strength: Ultimate (UTS)
83 MPa 12 x 103 psi
Thermal Properties
Heat Deflection Temperature At 1.82 MPa (264 psi)
200 °C 400 °F
Thermal Expansion
49 µm/m-K
Electrical Properties
Dielectric Constant (Relative Permittivity) At 1 Hz
3.5
Dielectric Constant (Relative Permittivity) At 1 MHz
3.5
Dielectric Strength (Breakdown Potential)
15 kV/mm 0.59 V/mil
Electrical Dissipation At 1 Hz
0.0017
Electrical Dissipation At 1 MHz
0.0056
Electrical Resistivity Order of Magnitude
15 10x Ω-m
Otherwise Unclassified Properties
Density
1.4 g/cm3 86 lb/ft3
Limiting Oxygen Index (LOI)
33 %
Water Absorption After 24 Hours
0.4 %
Common Calculations
Stiffness to Weight: Axial
1.1 points
Stiffness to Weight: Bending
34 points
Strength to Weight: Axial
17 points
Strength to Weight: Bending
31 points
Thermal Shock Resistance
45 points
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