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Rulon Bearings

Celanese Vandar® 2500 PBT, Unfilled
Categories: Polymer; Thermoplastic; Polyester, TP; Polybutylene Terephthalate (PBT)
Material Notes: Vandar 2500 is an unfilled polyester alloy which exhibits excellent toughness and impact strength. It is specially designed to offer excellent chemical resistance, good colorability and dimensional stability.

Information provided by Celanese
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 PropertiesMetricEnglishComments
Specific Gravity 1.25 g/cc1.25 g/ccASTM D792
Density 1.25 g/cc0.0452 lb/in³ISO 1183
Water Absorption 0.10 %
@Temperature 22.8 °C		0.10 %
@Temperature 73.0 °F		24hr immersion; ASTM D570
Linear Mold Shrinkage, Flow 0.017 - 0.022 cm/cm0.017 - 0.022 in/inASTM D955
 0.017 - 0.022 cm/cm0.017 - 0.022 in/inISO 294-4
Linear Mold Shrinkage, Transverse 0.017 - 0.022 cm/cm0.017 - 0.022 in/inISO 294-4
Melt Flow 12 g/10 min12 g/10 minASTM D1238
 
Mechanical PropertiesMetricEnglishComments
Hardness, Rockwell M 104104ISO 2039-2
Tensile Strength, Yield 33.8 MPa4900 psiASTM D638
 35.0 MPa5080 psi50mm/min; ISO 527-2/1A
Elongation at Break >= 50 %>= 50 %
 100 %100 %ASTM D638
Elongation at Yield 5.0 %5.0 %50mm/min; ISO 527-2/1A
Tensile Modulus 1.45 GPa210 ksi50mm/min; ISO 527-2/1A
Flexural Strength 49.6 MPa7200 psiASTM D790
 50.0 MPa7250 psiISO 178
Flexural Modulus 1.45 GPa210 ksiASTM D790
 1.50 GPa218 ksiISO 178
Izod Impact, Notched NBNBASTM D256
 1.33 J/cm
@Temperature -28.9 °C		2.50 ft-lb/in
@Temperature -20.0 °F		ASTM D256
Izod Impact, Notched (ISO) NBNBISO 180/1A
Charpy Impact Unnotched 20.3 J/cm²96.6 ft-lb/in²ISO 179/1eU
 16.8 J/cm²
@Temperature -30.0 °C		79.9 ft-lb/in²
@Temperature -22.0 °F		ISO 179/1eU
Charpy Impact, Notched 8.80 J/cm²41.9 ft-lb/in²ISO 179/1eA
 0.900 J/cm²
@Temperature -30.0 °C		4.28 ft-lb/in²
@Temperature -22.0 °F		ISO 179/1eA
 
Thermal PropertiesMetricEnglishComments
CTE, linear, Parallel to Flow 130 µm/m-°C72.2 µin/in-°FISO 11359-2
CTE, linear, Transverse to Flow 134 µm/m-°C74.4 µin/in-°FISO 11359-2
Melting Point 225 °C437 °F10°C/min; ISO 11357-1,-2,-3
 225 °C437 °FASTM D3418
Deflection Temperature at 0.46 MPa (66 psi) 125 °C257 °FISO 75-1, -2
 127 °C260 °FASTM D648
Deflection Temperature at 1.8 MPa (264 psi) 50.0 °C122 °FISO 75-1, -2
 51.7 °C125 °FASTM D648
Glass Transition Temp, Tg 70.0 °C158 °FISO 11357-1,-2,-3
Flammability, UL94 HBHB
 
Processing PropertiesMetricEnglishComments
Processing Temperature 65.0 - 96.0 °C149 - 205 °Fcavity
 250 - 260 °C482 - 500 °Fhot runner
Feed Temperature 230 - 240 °C446 - 464 °F
Zone 1 230 - 240 °C446 - 464 °F
Zone 2 235 - 250 °C455 - 482 °F
Zone 3 235 - 250 °C455 - 482 °F
Zone 4 240 - 260 °C464 - 500 °F
Die Temperature 240 - 260 °C464 - 500 °F
Melt Temperature 235 - 260 °C455 - 500 °F
 260 °C500 °FISO 294
Mold Temperature 82.0 °C180 °FISO 294
Injection Velocity 300 mm/sec11.8 in/secISO 294
Drying Temperature 120 - 130 °C248 - 266 °F
Dry Time 4.00 hour4.00 hour
Moisture Content <= 0.020 %<= 0.020 %
Hold Pressure 86.0 MPa12500 psiISO 294
 
Descriptive Properties
Injection moldingYes
Injection speedmedium-fast
Processing conditions acc. ISO7792-2

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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