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Rulon Bearings

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BLUESTAR PBT 403M-G20 20% Glass Filled
Categories: Polymer; Thermoplastic; Polyester, TP; Polybutylene Terephthalate (PBT); Polybutylene Terephthalate (PBT), 20% Glass Fiber Filled

Material Notes: PBT, injection molding grade, 20% glass fiber reinforced, flame retardant, exceptional flowability and processability, colorable.

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Physical PropertiesOriginal ValueComments
Specific Gravity 1.52 - 1.58 g/ccASTM D792
Moisture Absorption at Equilibrium 0.17 %50% RH; ASTM D570
Linear Mold Shrinkage, Transverse 0.0070 cm/cmASTM D955
Melt Flow 25 g/10 min
@Load 2.16 kg,
Temperature 250 °C
ASTM D1238
Ash 20 - 24 %ISO 3451
 
Mechanical PropertiesOriginal ValueComments
Tensile Strength at Break 85.0 MPa10mm/min; ASTM D638
Elongation at Break 1.8 %10mm/min; ASTM D638
Flexural Strength 135 MPa10mm/min; ASTM D790
Flexural Modulus 6800 MPa10mm/min; ASTM D790
Izod Impact, Notched (ISO) 5.50 kJ/m²ASTM D256
Izod Impact, Unnotched (ISO) 48.0 kJ/m²ASTM D256
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 1.00e+16 ohm-cmASTM D257
Dielectric Constant 3.4
@Frequency 50 Hz
ASTM D150
Dielectric Strength 18.0 kV/mmin oil; ASTM D149
Dissipation Factor 0.020
@Frequency 50.0 - 60.0 Hz
ASTM D150
 
Thermal PropertiesOriginal ValueComments
Deflection Temperature at 0.46 MPa (66 psi) 220 °CASTM D648
Deflection Temperature at 1.8 MPa (264 psi) 195 °C
@Thickness 3.20 mm
Unannealed; ASTM D648
Flammability, UL94 V-0
@Thickness 0.800 mm
Glow Wire Ignition Temperature 750 °C
 
Processing PropertiesOriginal ValueComments
Nozzle Temperature 240 °C
Melt Temperature 250 - 280 °C
Mold Temperature 60.0 - 80.0 °C
Drying Temperature 120 - 140 °C
Dry Time 3 - 4 hour
Injection Pressure 70.0 - 120 MPa
Back Pressure 6.00 - 18.0 MPa
Screw Speed <= 100 rpm

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