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Rulon Bearings

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Idemitsu Kosan Xarec® EA 543 SPS, 40% Glass Filled  (discontinued **)
Categories: Polymer; Thermoplastic; Polystyrene (PS); Syndiotactic Polystyrene (SPS); Syndiotactic Polystyrene (SPS) with Glass or Carbon Fiber

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Physical PropertiesOriginal ValueComments
Density 1.50 g/cc
Filler Content 40 %
Moisture Absorption 0.020 %24 hrs., 50% RH
Linear Mold Shrinkage, Flow 0.0010 - 0.0030 cm/cm
Linear Mold Shrinkage, Transverse 0.0030 - 0.0070 cm/cm
 
Mechanical PropertiesOriginal ValueComments
Tensile Strength at Break 130 MPa
Elongation at Break 1.6 %
Tensile Modulus 12.9 GPa
Flexural Yield Strength 200 MPa
Flexural Modulus 13.1 GPa
Izod Impact, Notched (ISO) 9.00 kJ/m²
Izod Impact, Unnotched (ISO) 26.0 kJ/m²
Charpy Impact Unnotched 29.0 kJ/m²
Charpy Impact, Notched 11.0 kJ/m²
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 1.00e+16 ohm-cm
Dielectric Constant 3.5
Dielectric Strength 35.0 kV/mmASTM D145
Dissipation Factor 0.0030IEC 60250
Arc Resistance 60 - 120 secASTM D495
Comparative Tracking Index 250 - 400 VIEC 60112
Hot Wire Ignition, HWI >= 120 sec
@Thickness 1.50 mm
UL 746A
High Amp Arc Ignition, HAI >= 120 arcs
@Thickness 1.50 mm
UL 746A
High Voltage Arc-Tracking Rate, HVTR 0.000 - 10.0 mm/minUL746A
 
Thermal PropertiesOriginal ValueComments
CTE, linear, Parallel to Flow 16.0 µm/m-°C
@Temperature -30.0 - 30.0 °C
CTE, linear, Transverse to Flow 29.0 µm/m-°C
Deflection Temperature at 0.46 MPa (66 psi) 265 °C
Deflection Temperature at 1.8 MPa (264 psi) 245 °C
UL RTI, Electrical 125 °CUL746B
UL RTI, Mechanical with Impact 110 °CUL746B
UL RTI, Mechanical without Impact 110 °CUL746B
Flammability, UL94 V-0
@Thickness 1.50 mm
 
Processing PropertiesOriginal ValueComments
Melt Temperature 280 - 310 °C
Mold Temperature 50.0 - 80.0 °C
 130 - 155 °CFor optimal surface finish

**
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