CAB vs. PMMA
Both CAB and PMMA are thermoplastics. There are 16 material properties with values for both materials. Properties with values for just one material (19, in this case) are not shown.
For each property being compared, the top bar is CAB and the bottom bar is PMMA.
Metric UnitsUS Customary Units
Mechanical Properties
| Elongation at Break, % | 50 to 55 | |
| 4.0 |
| Flexural Strength, MPa | 21 to 57 | |
| 110 |
| Tensile Strength: Ultimate (UTS), MPa | 20 to 50 | |
| 71 |
Thermal Properties
| Glass Transition Temperature, °C | 140 | |
| 110 |
| Heat Deflection Temperature At 1.82 MPa (264 psi), °C | 53 to 82 | |
| 96 |
| Specific Heat Capacity, J/kg-K | 1460 | |
| 1260 |
| Thermal Conductivity, W/m-K | 0.25 | |
| 0.19 |
| Thermal Expansion, µm/m-K | 14 | |
| 76 |
| Vicat Softening Temperature, °C | 90 to 120 | |
| 90 |
Electrical Properties
| Dielectric Strength (Breakdown Potential), kV/mm | 15 | |
| 30 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.2 | |
| 1.2 |
| Limiting Oxygen Index (LOI), % | 18 | |
| 17 |
| Refractive Index | 1.5 | |
| 1.5 |
Common Calculations
| Strength to Weight: Axial, points | 4.8 to 12 | |
| 17 |
| Strength to Weight: Bending, points | 14 to 25 | |
| 32 |
| Thermal Diffusivity, mm2/s | 0.14 to 0.15 | |
| 0.13 |