Polystyrene - PS

Material: Polystyrene - PS
Composition: (CH2-CH-C6H5)n
Property Minimum Value (S.I.) Maximum Value (S.I.) Units (S.I.) Minimum Value (Imp.) Maximum Value (Imp.) Units (Imp.)
Atomic Volume (average) 0.0064 0.0066 m3/kmol 390.552 402.756 in3/kmol
Density 1.04 1.08 Mg/m3 64.9251 67.4222 lb/ft3
Energy Content 96 120 MJ/kg 10400.5 13000.6 kcal/lb
Bulk Modulus 3.5 5 GPa 0.507632 0.725188 106 psi
Compressive Strength 40 100 MPa 5.80151 14.5038 ksi
Ductility 0.015 0.045 0.015 0.045 NULL
Elastic Limit 30 40 MPa 4.35113 5.80151 ksi
Endurance Limit 16.5 22 MPa 2.39312 3.19083 ksi
Fracture Toughness 0.9 1.1 MPa.m1/2 0.819042 1.00105 ksi.in1/2
Hardness 90 140 MPa 13.0534 20.3053 ksi
Loss Coefficient 0.0078 0.022 0.0078 0.022 NULL
Modulus of Rupture 34 50 MPa 4.93128 7.25189 ksi
Poisson's Ratio 0.4 0.43 0.4 0.43 NULL
Shear Modulus 0.88 1.2 GPa 0.127633 0.174045 106 psi
Tensile Strength 30 45 MPa 4.35113 6.5267 ksi
Young's Modulus 2.5 4.1 GPa 0.362594 0.594654 106 psi
Glass Temperature 370 380 K 206.33 224.33 °F
Latent Heat of Fusion kJ/kg BTU/lb
Maximum Service Temperature 365 370 K 197.33 206.33 °F
Melting Point K °F
Minimum Service Temperature 200 210 K -99.67 -81.67 °F
Specific Heat 1280 1440 J/kg.K 0.990539 1.11436 BTU/lb.F
Thermal Conductivity 0.12 0.16 W/m.K 0.224644 0.299525 BTU.ft/h.ft2.F
Thermal Expansion 60 130 10-6/K 108 234 10-6/°F
Breakdown Potential 18 19 MV/m 457.2 482.6 V/mil
Dielectric Constant 2.4 3.1 2.4 3.1 NULL
Resistivity 1e+021 1.58e+022 10-8 ohm.m 1e+021 1.58e+022 10-8 ohm.m
Environmental Properties
  Resistance Factors
1=Poor 5=Excellent
Flammability 3
Fresh Water 5
Organic Solvents 3
Oxidation at 500C 1
Sea Water 5
Strong Acid 5
Strong Alkalis 5
UV 3
Wear 3
Weak Acid 5
Weak Alkalis 5

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