PPE vs. PPO

Both PPE and PPO are thermoplastics. There are 13 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

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

Polyphenylene Ether (PPE)Polyphenylene Oxide (PPO)

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, %		30
Elongation at Break, %		3.5 to 28

Flexural Strength, MPa		75
Flexural Strength, MPa		92 to 140

Tensile Strength: Ultimate (UTS), MPa		55
Tensile Strength: Ultimate (UTS), MPa		63 to 140

Thermal Properties

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

Maximum Temperature: Mechanical, °C		90
Maximum Temperature: Mechanical, °C		100 to 110

Specific Heat Capacity, J/kg-K		1200
Specific Heat Capacity, J/kg-K		1020 to 1250

Thermal Expansion, µm/m-K		90
Thermal Expansion, µm/m-K		25 to 60

Electrical Properties

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

Electrical Resistivity Order of Magnitude, 10^x Ω-m		13
Electrical Resistivity Order of Magnitude, 10^x Ω-m		15

Otherwise Unclassified Properties

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

Water Absorption After 24 Hours, %		0.23
Water Absorption After 24 Hours, %		0.060 to 0.070

Common Calculations

Strength to Weight: Axial, points		14
Strength to Weight: Axial, points		16 to 27

Strength to Weight: Bending, points		30
Strength to Weight: Bending, points		33 to 42