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PMMA vs. PSU

Both PMMA and PSU are thermoplastics. There are 12 material properties with values for both materials. Properties with values for just one material (18, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa 120
95 to 180
Elongation at Break, % 4.0
2.0 to 52
Flexural Strength, MPa 110
110 to 200
Impact Strength: Notched Izod, J/m 74
59 to 100
Rockwell M Hardness 93
69 to 95
Tensile Strength: Ultimate (UTS), MPa 71
70 to 140

Thermal Properties

Heat Deflection Temperature At 1.82 MPa (264 psi), °C 96
180 to 200
Specific Heat Capacity, J/kg-K 1260
910 to 1000
Thermal Expansion, µm/m-K 76
25 to 57

Otherwise Unclassified Properties

Density, g/cm3 1.2
1.2 to 1.6

Common Calculations

Strength to Weight: Axial, points 17
16 to 25
Strength to Weight: Bending, points 32
30 to 40