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 Polystyrene (PS) Typical Properties
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Properties
PS (EPS)
PS (GPPS)
PS (HIPS)
PS (IRPS)
PS (MIPS)
PS (Specialty)
PS Alloy
PS+PE
PS+SPS
SPS
Density (g/cm³)0.0125 to 0.6751.02 to 1.061.03 to 1.061.06 to 1.181.041.02 to 1.161.03 to 1.270.0200 to 1.021.03 to 1.151.01 to 1.44
Melt Mass Flow Rate (g/10 min)--0.20 to 200.50 to 147.6 to 102.0 to 142.7 to 152.0 to 114.0 to 4.5----
Flexural Modulus (psi)2900 to 4300387000 to 521000182000 to 363000240000 to 334000305000 to 386000218000 to 366000220000 to 500000210000290000 to 406000363000 to 1.23E+6
Tensile Strength (psi)--2710 to 81002180 to 50801720 to 43002870 to 57202000 to 51702470 to 1160038.0 to 31904350 to 72505080 to 16000
Tensile Elongation (%)--1.0 to 210.60 to 671.0 to 401.2 to 452.0 to 482.0 to 103.0 to 8015 to 451.9 to 20
Rockwell Hardness--58 to 12242 to 11355 to 7545 to 11955 to 56----5060 to 75
Notched Izod Impact (ft·lb/in)--0.0900 to 0.5260.200 to 7.551.50 to 2.540.799 to 1.520.206 to 1.890.506 to 4.00------
DTUL @ 66 psi (0.45 MPa) (°F)--173 to 214175 to 210160 to 198185 to 226165 to 194170 to 205--199 to 239230 to 511
DTUL @ 264 psi (1.8 MPa) (°F)--160 to 211156 to 194156 to 191165 to 193160 to 189155 to 175154176 to 212203 to 455
CLTE, Flow (in/in/°F)0.0000350.000017 to 0.0000930.000041 to 0.0000500.000042 to 0.0000470.000044 to 0.000050--0.000060--0.0000440.000014 to 0.000051

SI
Properties
PS (EPS)
PS (GPPS)
PS (HIPS)
PS (IRPS)
PS (MIPS)
PS (Specialty)
PS Alloy
PS+PE
PS+SPS
SPS
Density (g/cm³)0.0125 to 0.6751.02 to 1.061.03 to 1.061.06 to 1.181.041.02 to 1.161.03 to 1.270.0200 to 1.021.03 to 1.151.01 to 1.44
Melt Mass Flow Rate (g/10 min)--0.20 to 200.50 to 147.6 to 102.0 to 142.7 to 152.0 to 114.0 to 4.5----
Flexural Modulus (MPa)20.0 to 29.62670 to 35901250 to 25001650 to 23002100 to 26601500 to 25301520 to 345014502000 to 28002500 to 8500
Tensile Strength (MPa)--18.7 to 55.915.0 to 35.011.8 to 29.619.8 to 39.413.8 to 35.617.0 to 80.00.262 to 22.030.0 to 50.035.0 to 110
Tensile Elongation (%)--1.0 to 210.60 to 671.0 to 401.2 to 452.0 to 482.0 to 103.0 to 8015 to 451.9 to 20
Rockwell Hardness--58 to 12242 to 11355 to 7545 to 11955 to 56----5060 to 75
Notched Izod Impact (J/m)--4.81 to 28.110.7 to 40379.9 to 13642.7 to 81.111.0 to 10127.0 to 214------
DTUL @ 66 psi (0.45 MPa) (°C)--78.3 to 10179.4 to 98.771.0 to 92.085.0 to 10874.0 to 90.076.7 to 96.0--93.0 to 115110 to 266
DTUL @ 264 psi (1.8 MPa) (°C)--71.3 to 99.369.1 to 90.368.9 to 88.373.6 to 89.471.0 to 87.068.3 to 79.468.080.0 to 10095.0 to 235
CLTE, Flow (cm/cm/°C)0.0000630.000030 to 0.000170.000074 to 0.0000900.000075 to 0.0000850.000080 to 0.000090--0.00011--0.0000800.000025 to 0.000092
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