PP Copolymer vs. PPE

Both PP copolymer and PPE are thermoplastics. There are 13 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

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

Polypropylene (PP) Copolymer Polyphenylene Ether (PPE)

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		0.9 to 1.1
Elastic (Young's, Tensile) Modulus, GPa		2.3

Elongation at Break, %		12
Elongation at Break, %		30

Flexural Strength, MPa		31
Flexural Strength, MPa		75

Tensile Strength: Ultimate (UTS), MPa		23 to 33
Tensile Strength: Ultimate (UTS), MPa		55

Thermal Properties

Heat Deflection Temperature At 1.82 MPa (264 psi), °C		50 to 100
Heat Deflection Temperature At 1.82 MPa (264 psi), °C		120

Maximum Temperature: Mechanical, °C		80
Maximum Temperature: Mechanical, °C		90

Melting Onset (Solidus), °C		150
Melting Onset (Solidus), °C		260

Electrical Properties

Dielectric Strength (Breakdown Potential), kV/mm		21 to 22
Dielectric Strength (Breakdown Potential), kV/mm		19

Otherwise Unclassified Properties

Density, g/cm³		0.9
Density, g/cm³		1.1

Common Calculations

Stiffness to Weight: Axial, points		0.56 to 0.68
Stiffness to Weight: Axial, points		1.2

Stiffness to Weight: Bending, points		36 to 38
Stiffness to Weight: Bending, points		42

Strength to Weight: Axial, points		7.1 to 10
Strength to Weight: Axial, points		14

Strength to Weight: Bending, points		20 to 25
Strength to Weight: Bending, points		30