CAP vs. PMMA
Both CAP and PMMA are thermoplastics. There are 15 material properties with values for both materials. Properties with values for just one material (20, in this case) are not shown.
For each property being compared, the top bar is CAP and the bottom bar is PMMA.
Metric UnitsUS Customary Units
Mechanical Properties
| Elongation at Break, % | 35 to 50 | |
| 4.0 |
| Flexural Strength, MPa | 29 to 56 | |
| 110 |
| Tensile Strength: Ultimate (UTS), MPa | 28 to 45 | |
| 71 |
Thermal Properties
| Glass Transition Temperature, °C | 190 | |
| 110 |
| Heat Deflection Temperature At 1.82 MPa (264 psi), °C | 65 to 80 | |
| 96 |
| Specific Heat Capacity, J/kg-K | 1480 | |
| 1260 |
| Thermal Conductivity, W/m-K | 0.25 | |
| 0.19 |
| Thermal Expansion, µm/m-K | 14 | |
| 76 |
| Vicat Softening Temperature, °C | 85 to 110 | |
| 90 |
Electrical Properties
| Dielectric Strength (Breakdown Potential), kV/mm | 15 | |
| 30 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.2 | |
| 1.2 |
| Refractive Index | 1.5 | |
| 1.5 |
Common Calculations
| Strength to Weight: Axial, points | 6.5 to 10 | |
| 17 |
| Strength to Weight: Bending, points | 17 to 23 | |
| 32 |
| Thermal Diffusivity, mm2/s | 0.14 | |
| 0.13 |