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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