PS vs. PAS
Both PS and PAS are thermoplastics. There are 16 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.
For each property being compared, the top bar is PS and the bottom bar is PAS.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 1.9 to 2.9 | |
| 2.7 |
| Elongation at Break, % | 1.8 to 40 | |
| 40 |
| Flexural Strength, MPa | 62 to 80 | |
| 110 |
| Impact Strength: Notched Izod, J/m | 19 to 45 | |
| 85 |
| Tensile Strength: Ultimate (UTS), MPa | 32 to 44 | |
| 83 |
Thermal Properties
| Thermal Expansion, µm/m-K | 80 to 98 | |
| 49 |
Electrical Properties
| Dielectric Strength (Breakdown Potential), kV/mm | 18 to 20 | |
| 15 |
| Electrical Resistivity Order of Magnitude, 10x Ω-m | 14 to 15 | |
| 15 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.0 | |
| 1.4 |
| Limiting Oxygen Index (LOI), % | 18 | |
| 33 |
| Water Absorption After 24 Hours, % | 0.040 to 0.080 | |
| 0.4 |
Common Calculations
| Stiffness to Weight: Axial, points | 1.0 to 1.5 | |
| 1.1 |
| Stiffness to Weight: Bending, points | 40 to 45 | |
| 34 |
| Strength to Weight: Axial, points | 8.5 to 12 | |
| 17 |
| Strength to Weight: Bending, points | 22 to 26 | |
| 31 |
| Thermal Shock Resistance, points | 11 to 15 | |
| 45 |