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PMMA vs. PPE

Both PMMA and PPE are thermoplastics. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 3.2
2.3
Elongation at Break, % 4.0
30
Flexural Strength, MPa 110
75
Tensile Strength: Ultimate (UTS), MPa 71
55

Thermal Properties

Glass Transition Temperature, °C 110
85
Heat Deflection Temperature At 1.82 MPa (264 psi), °C 96
120
Maximum Temperature: Autoignition, °C 320
430
Melting Onset (Solidus), °C 180
260
Specific Heat Capacity, J/kg-K 1260
1200
Thermal Conductivity, W/m-K 0.19
0.22
Thermal Expansion, µm/m-K 76
90
Vicat Softening Temperature, °C 90
140

Electrical Properties

Dielectric Strength (Breakdown Potential), kV/mm 30
19

Otherwise Unclassified Properties

Density, g/cm3 1.2
1.1

Common Calculations

Stiffness to Weight: Axial, points 1.5
1.2
Stiffness to Weight: Bending, points 42
42
Strength to Weight: Axial, points 17
14
Strength to Weight: Bending, points 32
30
Thermal Diffusivity, mm2/s 0.13
0.17
Thermal Shock Resistance, points 21
19