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Rulon Bearings

Celanese Riteflex® 635 Thermoplastic Polyester Elastomer (TPE)
Categories: Polymer; Thermoplastic; Elastomer, TPE; Polyester TPE; Polyester, TP; Polyester Thermoplastic Elastomer

Material Notes: Description: 35 Shore D Hardness 8,800 PSI flexural modulus

Information provided by Celanese Corporation.

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Physical PropertiesMetricEnglishComments
Density 1.14 g/cc0.0412 lb/in³ISO 1183 & ASTM D792
Water Absorption 0.60 %0.60 %ASTM D570
Linear Mold Shrinkage 0.0090 cm/cm0.0090 in/inASTM D955
Melt Flow 6.0 g/10 min6.0 g/10 minASTM D1238
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore D 3535ASTM D2240 & ISO 868
Tensile Strength at Break 13.2 MPa1920 psiASTM D638
Elongation at Break 470 %470 %ASTM D638
Tensile Modulus 0.0579 GPa8.40 ksiASTM D638
 0.0600 GPa8.70 ksi1 mm/min; ISO 527-2/1A
50% Modulus 8.00 MPa
@Strain 50 %
8.00 MPa
@Strain 50 %
ISO 527-2/1A
Flexural Strength 2.40 MPa348 psiISO 178
Flexural Modulus 0.0607 GPa8.80 ksiASTM D790
 0.0680 GPa9.86 ksiISO 178
 0.0848 GPa
@Temperature -40.0 °C
12.3 ksi
@Temperature -40.0 °F
ASTM D790
Izod Impact, Notched NBNBASTM D256
 NB
@Temperature -40.0 °C
NB
@Temperature -40.0 °F
ASTM D256
Charpy Impact Unnotched NBNBISO 179/1eU
 NB
@Temperature -30.0 °C
NB
@Temperature -22.0 °F
ISO 179/1eU
Charpy Impact, Notched NBNBISO 179/1eA
 NB
@Temperature -30.0 °C
NB
@Temperature -22.0 °F
ISO 179/1eA
Tear Strength 125 kN/m715 pliASTM D624
 136 kN/m775 pliASTM D1004
 
Electrical PropertiesMetricEnglishComments
Surface Resistance 5.00e+12 ohm5.00e+12 ohmASTM D257
Dielectric Constant 4.7
@Frequency 1e+6 Hz
4.7
@Frequency 1e+6 Hz
IEC 60250
Dielectric Strength 12.2 kV/mm310 kV/inShort Term; ASTM D149
 13.0 kV/mm330 kV/inIEC 60243-1
Dissipation Factor 0.030
@Frequency 1e+6 Hz
0.030
@Frequency 1e+6 Hz
IEC 60250
Comparative Tracking Index >= 600 V>= 600 VASTM D3638 & IEC 60112
 
Thermal PropertiesMetricEnglishComments
CTE, linear 220 µm/m-°C
@Temperature 20.0 °C
122 µin/in-°F
@Temperature 68.0 °F
ISO 11359-2
Melting Point 163 °C325 °FISO 11357-1,2,3 & ASTM D3418
Deflection Temperature at 0.46 MPa (66 psi) 52.0 °C126 °FISO 75-1, -2
 
Processing PropertiesMetricEnglishComments
Rear Barrel Temperature 155 - 170 °C311 - 338 °F
Middle Barrel Temperature 170 - 180 °C338 - 356 °F
Front Barrel Temperature 170 - 180 °C338 - 356 °F
Nozzle Temperature 170 - 190 °C338 - 374 °F
Melt Temperature 170 - 190 °C338 - 374 °F
Mold Temperature 20.0 - 55.0 °C68.0 - 131 °F
Injection Pressure 82.7 MPa12000 psi
Back Pressure 0.000 - 0.345 MPa0.000 - 50.0 psi

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