Celanese Crastin® SK608 BK509 PBT-GF45

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Celanese Crastin® SK608 BK509 PBT-GF45
Categories:	Polymer; Thermoplastic; Polyester, TP; Polybutylene Terephthalate (PBT); Polybutylene Terephthalate (PBT), 50% Glass Fiber Filled
Material Notes:	45% Glass Reinforced Polybutylene Terephthalate Former DuPont product acquired by Celanese in 2022.
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Physical Properties	Metric	English	Comments

Density	1.66 g/cc	0.0600 lb/in³	ISO 1183
Melt Density	1.47 g/cc @Temperature 260 °C	0.0531 lb/in³ @Temperature 500 °F
Water Absorption	0.30 % @Thickness 2.00 mm	0.30 % @Thickness 0.0787 in	Sim. to ISO 62
Moisture Absorption	0.100 % @Thickness 2.00 mm	0.100 % @Thickness 0.0787 in	Sim. to ISO 62
Linear Mold Shrinkage, Flow	0.0030 cm/cm	0.0030 in/in	ISO 294-4, 2577
	0.0010 cm/cm @Treatment Temp. 80.0 °C, Time 173000 sec	0.0010 in/in @Treatment Temp. 176 °F, Time 48.0 hour	Postmolding shrinkage; ISO 294-4
Linear Mold Shrinkage, Transverse	0.011 cm/cm	0.011 in/in	ISO 294-4, 2577
	0.0020 cm/cm @Treatment Temp. 80.0 °C, Time 173000 sec	0.0020 in/in @Treatment Temp. 176 °F, Time 48.0 hour	Postmolding shrinkage; ISO 294-4
Melt Flow	4.0 g/10 min @Load 5.00 kg, Temperature 250 °C	4.0 g/10 min @Load 11.0 lb, Temperature 482 °F	cm³/10min Volumetric; ISO 1133
	6.0 g/10 min @Load 5.00 kg, Temperature 250 °C	6.0 g/10 min @Load 11.0 lb, Temperature 482 °F	ISO 1133

Mechanical Properties	Metric	English	Comments
Tensile Strength at Break	140 MPa	20300 psi	ISO 527-1/-2
Elongation at Break	2.0 %	2.0 %	ISO 527-1/-2
Tensile Modulus	14.2 GPa	2060 ksi	ISO 527-1/-2
Flexural Strength	210 MPa	30500 psi	ISO 178
Flexural Modulus	13.3 GPa	1930 ksi	ISO 178
Poissons Ratio	0.33	0.33
Izod Impact, Notched (ISO)	10.0 kJ/m² @Temperature -30.0 °C	4.76 ft-lb/in² @Temperature -22.0 °F	ISO 180/1A
	10.0 kJ/m² @Temperature 23.0 °C	4.76 ft-lb/in² @Temperature 73.4 °F	ISO 180/1A
Charpy Impact Unnotched	5.50 J/cm² @Temperature 23.0 °C	26.2 ft-lb/in² @Temperature 73.4 °F	ISO 179/1eU
	6.50 J/cm² @Temperature -30.0 °C	30.9 ft-lb/in² @Temperature -22.0 °F	ISO 179/1eU
Charpy Impact, Notched	1.00 J/cm² @Temperature 23.0 °C	4.76 ft-lb/in² @Temperature 73.4 °F	ISO 179/1eA

Electrical Properties	Metric	English	Comments
Volume Resistivity	>= 1.00e+15 ohm-cm	>= 1.00e+15 ohm-cm	IEC 62631-3-1
Dielectric Constant	3.9 @Frequency 1e+6 Hz	3.9 @Frequency 1e+6 Hz	IEC 62631-2-1
	4.1 @Frequency 100 Hz	4.1 @Frequency 100 Hz	IEC 62631-2-1
Dielectric Strength	32.0 kV/mm	813 kV/in	IEC 60243-1
Dissipation Factor	0.0038 @Frequency 100 Hz	0.0038 @Frequency 100 Hz	IEC 62631-2-1
	0.013 @Frequency 1e+6 Hz	0.013 @Frequency 1e+6 Hz	IEC 62631-2-1
Comparative Tracking Index	475 V	475 V	IEC 60112

Thermal Properties	Metric	English	Comments
CTE, linear, Parallel to Flow	20.0 µm/m-°C	11.1 µin/in-°F	ISO 11359-1/-2
CTE, linear, Transverse to Flow	80.0 µm/m-°C	44.4 µin/in-°F	ISO 11359-1/-2
Melting Point	225 °C	437 °F	10°C/min; ISO 11357-1/-3
Hot Ball Pressure Test	210 °C	410 °F	IEC 60695-10-2
Deflection Temperature at 0.46 MPa (66 psi)	222 °C	432 °F	ISO 75-1/-2
Deflection Temperature at 1.8 MPa (264 psi)	207 °C	405 °F	ISO 75-1/-2
Vicat Softening Point	215 °C	419 °F	50°C/h, 50N; ISO 306
Glass Transition Temp, Tg	55.0 °C	131 °F	10°C/min; ISO 11357-1/-2
Flammability, UL94	HB @Thickness 0.750 mm	HB @Thickness 0.0295 in	IEC 60695-11-10
	HB @Thickness 1.50 mm	HB @Thickness 0.0591 in	IEC 60695-11-10
Flame Spread	<= 80.0 mm/min @Thickness 1.00 mm	<= 3.15 in/min @Thickness 0.0394 in	ISO 3795 (FMVSS 302)
Oxygen Index	20 %	20 %	ISO 4589-1/-2

Processing Properties	Metric	English	Comments
Melt Temperature	260 °C	500 °F	Optimum, Injection
	250 - 270 °C	482 - 518 °F	Range, Injection
Mold Temperature	80.0 °C	176 °F	Optimum, Injection
	30.0 - 130 °C	86.0 - 266 °F	Injection
Ejection Temperature	170 °C	338 °F	Injection
Drying Temperature	120 °C	248 °F	Injection
Dry Time	2.00 - 4.00 hour	2.00 - 4.00 hour	Injection, Dehumidified Dryer
Moisture Content	<= 0.040 %	<= 0.040 %	Injection
Hold Pressure	>= 60.0 MPa	>= 8700 psi	Injection

Descriptive Properties
Additives	Release agent
Back pressure	As low as possible
Drying Recommended	yes		Injection
Emission of organic compounds (µgC/g)	70		VDA 277
FMVSS Class	B		ISO 3795 (FMVSS 302)
Odor Class	3		VDA 270
Part Marking Code	>PBT-GF45<		ISO 11469
Polymer	PBT-GF45
Processing Hold Pressure Time (s/mm)	3		Injection
Resin Identification	PBT-GF45		ISO 1043

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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PDSX5060 / 197700

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