| Polystyrene (PS) Typical Properties |
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| Density (g/cm³) | 0.0110 to 0.0362 | 1.02 to 1.06 | 1.03 to 1.16 | 1.14 to 1.18 | 1.04 | 1.02 to 1.16 | 0.0200 to 1.02 | 1.03 to 1.15 | 1.01 to 1.44 | | Melt Mass Flow Rate (g/10 min) | -- | 0.012 to 15 | 0.50 to 14 | 4.4 to 13 | 4.5 to 14 | 2.9 to 20 | 0.14 to 4.5 | -- | -- | | Flexural Modulus (psi) | 2900 to 4300 | 296000 to 487000 | 232000 to 371000 | 261000 to 334000 | 305000 to 386000 | 218000 to 366000 | 210000 to 277000 | 290000 to 406000 | 363000 to 1.23E+6 | | Tensile Strength (psi) | -- | 2710 to 8100 | 2440 to 4600 | 1780 to 4260 | 3110 to 5720 | 2000 to 5170 | 38.0 to 3240 | 4350 to 7250 | 5080 to 16000 | | Tensile Elongation (%) | -- | 1.0 to 21 | 0.60 to 63 | 29 to 40 | 1.2 to 45 | 2.0 to 43 | 2.7 to 80 | 15 to 45 | 1.9 to 20 | | Rockwell Hardness | -- | 58 to 122 | 42 to 113 | 55 to 75 | 45 to 119 | 55 to 56 | -- | 50 | 60 to 75 | | Notched Izod Impact (ft·lb/in) | -- | 0.090 to 0.53 | 0.64 to 2.7 | 1.8 to 2.2 | 0.80 to 1.5 | 0.21 to 1.9 | 0.49 | -- | -- | | DTUL @ 66 psi (0.45 MPa) (°F) | -- | 173 to 214 | 174 to 206 | -- | 185 to 226 | 165 to 194 | -- | 199 to 239 | 230 to 511 | | DTUL @ 264 psi (1.8 MPa) (°F) | -- | 159 to 209 | 157 to 195 | 176 to 191 | 165 to 193 | 160 to 189 | 154 | 176 to 212 | 203 to 455 | | CLTE, Flow (in/in/°F) | 0.000035 | 0.000017 to 0.000093 | 0.000041 to 0.000050 | 0.000042 | 0.000044 to 0.000050 | -- | -- | 0.000044 | 0.000014 to 0.000051 |
SI
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| Density (g/cm³) | 0.0110 to 0.0362 | 1.02 to 1.06 | 1.03 to 1.16 | 1.14 to 1.18 | 1.04 | 1.02 to 1.16 | 0.0200 to 1.02 | 1.03 to 1.15 | 1.01 to 1.44 | | Melt Mass Flow Rate (g/10 min) | -- | 0.012 to 15 | 0.50 to 14 | 4.4 to 13 | 4.5 to 14 | 2.9 to 20 | 0.14 to 4.5 | -- | -- | | Flexural Modulus (MPa) | 20.0 to 29.6 | 2040 to 3350 | 1600 to 2560 | 1800 to 2300 | 2100 to 2660 | 1500 to 2530 | 1450 to 1910 | 2000 to 2800 | 2500 to 8500 | | Tensile Strength (MPa) | -- | 18.7 to 55.9 | 16.8 to 31.7 | 12.2 to 29.4 | 21.5 to 39.4 | 13.8 to 35.6 | 0.262 to 22.4 | 30.0 to 50.0 | 35.0 to 110 | | Tensile Elongation (%) | -- | 1.0 to 21 | 0.60 to 63 | 29 to 40 | 1.2 to 45 | 2.0 to 43 | 2.7 to 80 | 15 to 45 | 1.9 to 20 | | Rockwell Hardness | -- | 58 to 122 | 42 to 113 | 55 to 75 | 45 to 119 | 55 to 56 | -- | 50 | 60 to 75 | | Notched Izod Impact (J/m) | -- | 4.8 to 28 | 34 to 140 | 98 to 120 | 43 to 80 | 11 to 100 | 26 | -- | -- | | DTUL @ 66 psi (0.45 MPa) (°C) | -- | 78.3 to 101 | 78.9 to 96.8 | -- | 85.0 to 108 | 74.0 to 90.0 | -- | 93.0 to 115 | 110 to 266 | | DTUL @ 264 psi (1.8 MPa) (°C) | -- | 70.6 to 98.4 | 69.5 to 90.5 | 80.0 to 88.4 | 73.6 to 89.4 | 71.0 to 87.0 | 68.0 | 80.0 to 100 | 95.0 to 235 | | CLTE, Flow (cm/cm/°C) | 0.000063 | 0.000030 to 0.00017 | 0.000074 to 0.000090 | 0.000076 | 0.000080 to 0.000090 | -- | -- | 0.000080 | 0.000025 to 0.000092 |
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