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PPE vs. PMMA

Both PPE and PMMA 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 PPE and the bottom bar is PMMA.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

Density, g/cm3 1.1
1.2

Common Calculations

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