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Rulon Bearings

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Celanese Celanex® 4302HS PBT, 30% Glass Reinforced
Categories: Polymer; Thermoplastic; Polyester, TP; Polybutylene Terephthalate (PBT); Polybutylene Terephthalate (PBT), 30% Glass Fiber Filled

Material Notes: Celanex 4302HS is a 30% glass reinforced PBT designed for improved mold flow, warp resistance and surface appearance. Celanex 4302HS is ideally suited for heat shock applications such as ignition coil housings and coil-on-plug housings. Celanex 4302HS als
To avoid hydrolytic degradation during processing, CELANEX resins have to be dried to a moisture level equal to or less than 0.02%. Drying should be done in a dehumidifying hopper dryer capable of dewpoints <-40°F (-40°C) at 250°F (121°C) for 4 hours.
For subsequent storage of the material in the dryer until processed (<= 60 h) it is necessary to lower the temperature to 100° C.

Information provided by Celanese Corporation.

Key Words: 30% glass filled, heat shock resistant, hydrolysis resistant
Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesOriginal ValueComments
Specific Gravity 1.49 g/ccASTM D792
Density 1.49 g/ccISO 1183
Moisture Absorption at Equilibrium 0.15 %23°C/50%RH; ISO 62
Linear Mold Shrinkage, Flow 0.0020 - 0.0040 cm/cmISO 294-4
 0.0030 in/inASTM D955
Linear Mold Shrinkage, Transverse 0.0040 - 0.0060 cm/cmISO 294-4
 
Mechanical PropertiesOriginal ValueComments
Tensile Strength at Break 120 MPa5mm/min; ISO 527-2/1A
 16000 psi
@Temperature 22.8 °C
ASTM D638
Elongation at Break 2.8 %5mm/min; ISO 527-2/1A
 3.0 %
@Temperature 22.8 °C
ASTM D638
Tensile Modulus 8500 MPa1mm/min; ISO 527-2/1A
Flexural Strength 190 MPaISO 178
 25000 psi
@Temperature 22.8 °C
ASTM D790
Flexural Modulus 8700 MPaISO 178
 1.10e+6 psi
@Temperature 22.8 °C
ASTM D790
Izod Impact, Notched 2.20 ft-lb/in
@Temperature 22.8 °C
ASTM D256
Izod Impact, Notched (ISO) 13.9 kJ/m²ISO 180/1A
Charpy Impact Unnotched 56.0 kJ/m²ISO 179/1eU
 41.0 kJ/m²
@Temperature -30.0 °C
ISO 179/1eU
Charpy Impact, Notched 9.90 kJ/m²ISO 179/1eA
 8.30 kJ/m²
@Temperature -30.0 °C
ISO 179/1eA
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 2.00e+14 ohm-cmIEC 60093
Surface Resistance 1.00e+17 ohmIEC 60093
Dielectric Constant 2.5
@Frequency 1e+6 Hz
IEC 60250
 3.2
@Frequency 100 Hz
IEC 60250
Dielectric Strength 19.0 kV/mmIEC 60243-1
 536 V/milshort term; ASTM D149
Dissipation Factor 0.010
@Frequency 1e+6 Hz
IEC 60250
Comparative Tracking Index 300 VIEC 60112
 
Thermal PropertiesOriginal ValueComments
CTE, linear, Parallel to Flow 23.0 µm/m-°CISO 11359-2
CTE, linear, Transverse to Flow 24.0 µm/m-°CISO 11359-2
Melting Point 225 °CISO 11357-1,-2,-3
 437 °FASTM D3418
Deflection Temperature at 0.46 MPa (66 psi) 218 °CISO 75-1, -2
 420 °FASTM D648
Deflection Temperature at 1.8 MPa (264 psi) 173 °CISO 75-1, -2
 344 °FASTM D648
Glass Transition Temp, Tg 55.0 °CISO 11357-1,-2,-3
Flammability, UL94 HB
 
Processing PropertiesOriginal ValueComments
Processing Temperature 20.0 - 50.0 °Chopper
 65.0 - 93.0 °Ccavity
Feed Temperature 230 - 240 °C
Zone 1 230 - 240 °C
Zone 2 235 - 250 °C
Zone 3 235 - 250 °C
Zone 4 240 - 260 °C
Die Temperature 250 - 260 °C
Melt Temperature 235 - 260 °C
 260 °CISO 294
Mold Temperature 82.0 °CISO 294
Injection Velocity 300 mm/secISO 294
Drying Temperature 120 - 130 °C
Dry Time 4 hour
Moisture Content 0.020 %Necessary low maximum
Injection Pressure 48.0 MPaISO 294
Hot-Working Temperature 250 - 260 °C
 
Descriptive Properties
Injection moldingYes
Injection speedmedium-fast
Processing conditions acc. ISO7792-2

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