Polyphenylene Sulfide (PPS)
PPS is a thermoplastic, further classified as a polyphenylene plastic.
The properties of PPS include three 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 PPS to: polyphenylene 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
Compressive (Crushing) Strength
95 to 160 MPa 14 to 23 x 103 psi
Elongation at Break
2.5 to 11 %
Flexural Modulus
13 to 17 GPa 1.8 to 2.5 x 106 psi
Flexural Strength
120 to 190 MPa 17 to 27 x 103 psi
Impact Strength: Notched Izod
21 to 80 J/m 0.38 to 1.5 ft-lb/in
Rockwell R Hardness
120
Tensile Strength: Ultimate (UTS)
75 to 190 MPa 11 to 27 x 103 psi
Thermal Properties
Glass Transition Temperature
190 to 290 °C 370 to 550 °F
Heat Deflection Temperature At 1.82 MPa (264 psi)
130 to 260 °C 270 to 500 °F
Specific Heat Capacity
910 to 1000 J/kg-K 0.22 to 0.24 BTU/lb-°F
Thermal Expansion
20 to 45 µm/m-K
Otherwise Unclassified Properties
Density
1.3 to 1.7 g/cm3 82 to 100 lb/ft3
Water Absorption At Saturation
0.060 to 0.1 %
Common Calculations
Strength to Weight: Axial
16 to 37 points
Strength to Weight: Bending
30 to 52 points
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