PPSU vs. PPO

Both PPSU and PPO are thermoplastics. There are 18 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is PPSU and the bottom bar is PPO.

Polyphenylsulfone (PPSU)Polyphenylene Oxide (PPO)

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, %		26
Elongation at Break, %		3.5 to 28

Flexural Modulus, GPa		4.7
Flexural Modulus, GPa		2.5 to 8.6

Flexural Strength, MPa		130
Flexural Strength, MPa		92 to 140

Impact Strength: Notched Izod, J/m		80
Impact Strength: Notched Izod, J/m		80 to 270

Tensile Strength: Ultimate (UTS), MPa		95
Tensile Strength: Ultimate (UTS), MPa		63 to 140

Thermal Properties

Heat Deflection Temperature At 1.82 MPa (264 psi), °C		210
Heat Deflection Temperature At 1.82 MPa (264 psi), °C		120 to 140

Maximum Temperature: Mechanical, °C		160
Maximum Temperature: Mechanical, °C		100 to 110

Specific Heat Capacity, J/kg-K		970
Specific Heat Capacity, J/kg-K		1020 to 1250

Thermal Expansion, µm/m-K		45
Thermal Expansion, µm/m-K		25 to 60

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 Hz		3.8
Dielectric Constant (Relative Permittivity) At 1 Hz		2.7 to 3.2

Dielectric Strength (Breakdown Potential), kV/mm		16
Dielectric Strength (Breakdown Potential), kV/mm		19 to 21

Electrical Dissipation At 1 Hz		0.0020
Electrical Dissipation At 1 Hz		0.0010 to 0.0020

Electrical Resistivity Order of Magnitude, 10^x Ω-m		14
Electrical Resistivity Order of Magnitude, 10^x Ω-m		15

Otherwise Unclassified Properties

Density, g/cm³		1.4
Density, g/cm³		1.1 to 1.4

Limiting Oxygen Index (LOI), %		38
Limiting Oxygen Index (LOI), %		32

Water Absorption After 24 Hours, %		0.44
Water Absorption After 24 Hours, %		0.060 to 0.070

Common Calculations

Strength to Weight: Axial, points		19
Strength to Weight: Axial, points		16 to 27

Strength to Weight: Bending, points		33
Strength to Weight: Bending, points		33 to 42