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	Original Value	Comments

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

Mechanical Properties	Original Value	Comments
Tensile Strength at Break	60.0 MPa	50mm/min; ISO 527-2/1A
Tensile Strength, Yield	60.0 MPa	50mm/min; ISO 527-2/1A
Elongation at Break	15 %
Elongation at Yield	4.0 %	50mm/min; ISO 527-2/1A
Tensile Modulus	2700 MPa	50mm/min; ISO 527-2/1A
Flexural Strength	90.0 MPa	ISO 178
Charpy Impact Unnotched	135 kJ/m²	ISO 179/1eU
	130 kJ/m² @Temperature -30.0 °C	ISO 179/1eU
Charpy Impact, Notched	5.00 kJ/m²	ISO 179/1eA
	4.50 kJ/m² @Temperature -30.0 °C	ISO 179/1eA
Tensile Creep Modulus, 1 hour	2400 MPa	ISO 899-1
Tensile Creep Modulus, 1000 hours	1600 MPa	ISO 899-1

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

Thermal Properties	Original Value	Comments
CTE, linear, Parallel to Flow	110 µm/m-°C	ISO 11359-2
Specific Heat Capacity	1.92 J/g-°C
Thermal Conductivity	0.133 W/m-K
Melting Point	225 °C	10°C/min; ISO 11357-1,-2,-3
Deflection Temperature at 0.46 MPa (66 psi)	160 °C	ISO 75-1, -2
Deflection Temperature at 1.8 MPa (264 psi)	60.0 °C	ISO 75-1, -2
Vicat Softening Point	190 °C	ISO 306
Flammability, UL94	HB @Thickness 1.49 mm
	HB @Thickness 1.00 mm
Oxygen Index	22 %	ISO 4589

Processing Properties	Original Value	Comments
Processing Temperature	75.0 - 85.0 °C	cavity
	250 - 260 °C	hot runner
Feed Temperature	190 - 200 °C
Zone 1	240 - 250 °C
Zone 2	240 - 250 °C
Zone 3	245 - 255 °C
Zone 4	245 - 255 °C
Die Temperature	250 - 260 °C
Melt Temperature	250 - 260 °C
	265 °C	ISO 294
Mold Temperature	80.0 °C	ISO 294
Ejection Temperature	219 °C
Injection Velocity	200 mm/sec	ISO 294
Drying Temperature	120 - 140 °C
Dry Time	2.00 - 4.00 hour
Moisture Content	<= 0.020 %
Hold Pressure	70.0 MPa	ISO 294

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

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PHCQ036 / 178491

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