Celanese Celanex® 2000K Polyester (PBT)

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Celanese Celanex® 2000K Polyester (PBT)
Categories:	Polymer; Thermoplastic; Polyester, TP; Polybutylene Terephthalate (PBT); Polybutylene Terephthalate (PBT), Unreinforced, Molded
Material Notes:	Key cap grade Information provided by Celanese Corporation.
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Physical Properties	Metric	English	Comments

Density	1.31 g/cc	0.0473 lb/in³	ASTM D792
Water Absorption	0.090 %	0.090 %	ASTM D570
Linear Mold Shrinkage, Flow	0.019 cm/cm	0.019 in/in

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell M	75	75	ISO 2039-2
Tensile Strength, Yield	60.0 MPa	8700 psi	ISO 527
Elongation at Break	5.0 %	5.0 %	ASTM D638
Flexural Strength	85.0 MPa	12300 psi	ISO 178
Flexural Modulus	2.60 GPa	377 ksi	ISO 178
Izod Impact, Notched (ISO)	3.20 kJ/m²	1.52 ft-lb/in²	ISO 180/1A

Electrical Properties	Metric	English	Comments
Electrical Resistivity	>= 1.00e+16 ohm-cm	>= 1.00e+16 ohm-cm	ASTM D257
Dielectric Constant	3.2 @Frequency 100 Hz	3.2 @Frequency 100 Hz
Dielectric Strength	17.0 kV/mm @Thickness 3.17 mm	432 kV/in @Thickness 0.125 in	50% RH; ASTM D149
Dissipation Factor	0.0020 @Frequency 100 Hz	0.0020 @Frequency 100 Hz
Comparative Tracking Index	>= 600 V	>= 600 V	ASTM D3638

Thermal Properties	Metric	English	Comments
Deflection Temperature at 0.46 MPa (66 psi)	155 °C	311 °F	ISO 75
Deflection Temperature at 1.8 MPa (264 psi)	55.0 °C	131 °F	ISO 75
Flammability, UL94	HB @Thickness 0.800 mm	HB @Thickness 0.0315 in	UL94

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PHCT05 / 45645

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