Polyurethane Thermoplastic Elastomer - PU TPE

Material: Polyurethane Thermoplastic Elastomer - PU TPE
Composition: (CO-NH-R-NH-CO-O-R-O)n
Property Minimum Value (S.I.) Maximum Value (S.I.) Units (S.I.) Minimum Value (Imp.) Maximum Value (Imp.) Units (Imp.)
Atomic Volume (average) 0.006 0.007 m3/kmol 366.142 427.166 in3/kmol
Density 1.02 1.25 Mg/m3 63.6766 78.035 lb/ft3
Energy Content 90 100 MJ/kg 9750.48 10833.9 kcal/lb
Bulk Modulus 1.5 2 GPa 0.217556 0.290075 106 psi
Compressive Strength 50 100 MPa 7.25189 14.5038 ksi
Ductility 3.8 7.2 3.8 7.2 NULL
Elastic Limit 25 51 MPa 3.62594 7.39692 ksi
Endurance Limit 18.8 38.3 MPa 2.72671 5.55494 ksi
Fracture Toughness 0.2 0.4 MPa.m1/2 0.182009 0.364019 ksi.in1/2
Hardness MPa ksi
Loss Coefficient 0.51 1.2 0.51 1.2 NULL
Modulus of Rupture 31 55 MPa 4.49617 7.97708 ksi
Poisson's Ratio 0.49 0.498 0.49 0.498 NULL
Shear Modulus 0.0007 0.008 GPa 0.000101526 0.0011603 106 psi
Tensile Strength 25 51 MPa 3.62594 7.39692 ksi
Young's Modulus 0.002 0.03 GPa 0.000290075 0.00435113 106 psi
Glass Temperature 200 250 K -99.67 -9.67 °F
Latent Heat of Fusion kJ/kg BTU/lb
Maximum Service Temperature 340 360 K 152.33 188.33 °F
Melting Point K °F
Minimum Service Temperature 200 250 K -99.67 -9.67 °F
Specific Heat 1650 1700 J/kg.K 1.27687 1.31556 BTU/lb.F
Thermal Conductivity 0.28 0.3 W/m.K 0.524169 0.56161 BTU.ft/h.ft2.F
Thermal Expansion 150 165 10-6/K 270 297 10-6/°F
Breakdown Potential 16 22 MV/m 406.4 558.8 V/mil
Dielectric Constant 3.5 9.5 3.5 9.5 NULL
Resistivity 1e+018 1e+022 10-8 ohm.m 1e+018 1e+022 10-8 ohm.m
Environmental Properties
  Resistance Factors
1=Poor 5=Excellent
Flammability 1
Fresh Water 5
Organic Solvents 4
Oxidation at 500C 1
Sea Water 5
Strong Acid 3
Strong Alkalis 3
UV 4
Wear 4
Weak Acid 5
Weak Alkalis 4

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