Celanese Celanex® 2500 PBT, Unfilled

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Celanese Celanex® 2500 PBT, Unfilled
Categories:	Polymer; Thermoplastic; Polyester, TP; Polybutylene Terephthalate (PBT)
Material Notes:	Chemical abbreviation according to ISO 1043-1: PBT Information provided by Celanese
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Physical Properties	Metric	English	Comments

Density	1.31 g/cc	0.0473 lb/in³	ISO 1183
Density of Compound	1.11 g/cc	0.0401 lb/in³
Moisture Absorption	0.200 %	0.200 %	23°C/50%RH; ISO 62
Viscosity Test	85 cm³/g	0.85 dl/g	ISO 307, 1157, 1628
Linear Mold Shrinkage, Flow	0.018 - 0.020 cm/cm	0.018 - 0.020 in/in	ISO 294-4
Melt Flow	40 g/10 min @Load 2.16 kg, Temperature 250 °C	40 g/10 min @Load 4.76 lb, Temperature 482 °F	[cm3/10min]; ISO 1133

Mechanical Properties	Metric	English	Comments
Tensile Strength at Break	60.0 MPa	8700 psi	50mm/min; ISO 527-2/1A
Tensile Strength, Yield	60.0 MPa	8700 psi	50mm/min; ISO 527-2/1A
Elongation at Break	15 %	15 %
Elongation at Yield	4.0 %	4.0 %	50mm/min; ISO 527-2/1A
Tensile Modulus	2.70 GPa	392 ksi	50mm/min; ISO 527-2/1A
Flexural Strength	90.0 MPa	13100 psi	ISO 178
Charpy Impact Unnotched	13.5 J/cm²	64.2 ft-lb/in²	ISO 179/1eU
	13.0 J/cm² @Temperature -30.0 °C	61.9 ft-lb/in² @Temperature -22.0 °F	ISO 179/1eU
Charpy Impact, Notched	0.500 J/cm²	2.38 ft-lb/in²	ISO 179/1eA
	0.450 J/cm² @Temperature -30.0 °C	2.14 ft-lb/in² @Temperature -22.0 °F	ISO 179/1eA
Tensile Creep Modulus, 1 hour	2400 MPa	348000 psi	ISO 899-1
Tensile Creep Modulus, 1000 hours	1600 MPa	232000 psi	ISO 899-1

Electrical Properties	Metric	English	Comments
Volume Resistivity	>= 1.00e+15 ohm-cm	>= 1.00e+15 ohm-cm	IEC 60093
Surface Resistance	>= 1.00e+15 ohm	>= 1.00e+15 ohm	IEC 60093
Dielectric Constant	3.8 @Frequency 1e+6 Hz	3.8 @Frequency 1e+6 Hz	IEC 60250
	3.9 @Frequency 100 Hz	3.9 @Frequency 100 Hz	IEC 60250
Dielectric Strength	23.0 kV/mm	584 kV/in	IEC 60243-1
Dissipation Factor	0.0013 @Frequency 100 Hz	0.0013 @Frequency 100 Hz	IEC 60250
	0.020 @Frequency 1e+6 Hz	0.020 @Frequency 1e+6 Hz	IEC 60250
Comparative Tracking Index	600 V	600 V	IEC 60112

Thermal Properties	Metric	English	Comments
CTE, linear, Parallel to Flow	110 µm/m-°C	61.1 µin/in-°F	ISO 11359-2
Specific Heat Capacity	1.92 J/g-°C	0.459 BTU/lb-°F
Thermal Conductivity	0.133 W/m-K	0.923 BTU-in/hr-ft²-°F
Melting Point	225 °C	437 °F	10°C/min; ISO 11357-1,-2,-3
Deflection Temperature at 0.46 MPa (66 psi)	160 °C	320 °F	ISO 75-1, -2
Deflection Temperature at 1.8 MPa (264 psi)	60.0 °C	140 °F	ISO 75-1, -2
Vicat Softening Point	190 °C	374 °F	ISO 306
Flammability, UL94	HB @Thickness 1.49 mm	HB @Thickness 0.0587 in
	HB @Thickness 1.00 mm	HB @Thickness 0.0394 in
Oxygen Index	22 %	22 %	ISO 4589

Processing Properties	Metric	English	Comments
Processing Temperature	75.0 - 85.0 °C	167 - 185 °F	cavity
	250 - 260 °C	482 - 500 °F	hot runner
Feed Temperature	190 - 200 °C	374 - 392 °F
Zone 1	240 - 250 °C	464 - 482 °F
Zone 2	240 - 250 °C	464 - 482 °F
Zone 3	245 - 255 °C	473 - 491 °F
Zone 4	245 - 255 °C	473 - 491 °F
Die Temperature	250 - 260 °C	482 - 500 °F
Melt Temperature	250 - 260 °C	482 - 500 °F
	265 °C	509 °F	ISO 294
Mold Temperature	80.0 °C	176 °F	ISO 294
Ejection Temperature	219 °C	426 °F
Injection Velocity	200 mm/sec	7.87 in/sec	ISO 294
Drying Temperature	120 - 140 °C	248 - 284 °F
Dry Time	2.00 - 4.00 hour	2.00 - 4.00 hour
Moisture Content	<= 0.020 %	<= 0.020 %
Hold Pressure	70.0 MPa	10200 psi	ISO 294

Descriptive Properties
Injection molding	Yes
Injection speed	fast
Processing conditions acc. ISO	7792
pvT (Generic Grade reference)	PBT, M, A14-03

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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PHCQ036 / 178491

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