Celanese Crastin® SK643FR NC010 Polybutylene Terephthalate (PBT)

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Celanese Crastin® SK643FR NC010 Polybutylene Terephthalate (PBT)
Categories:	Polymer; Thermoplastic; Polyester, TP; Polybutylene Terephthalate (PBT); Polybutylene Terephthalate (PBT), 20% Glass Fiber Filled
Material Notes:	20% Glass Reinforced Flame Retardant Polybutylene Terephthalate Crastin SK643FR is a flame retardant 20% glass reinforced polybutylene terephthalate molding resin. It is recognized as UL94V-0 at 0.8mm. Former DuPont product acquired by Celanese in 2022.
Key Words:	PBT-GF20FR(17)
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Physical Properties	Metric	English	Comments

Density	1.63 g/cc	0.0589 lb/in³	ISO 1183
Water Absorption	0.30 % @Thickness 2.00 mm	0.30 % @Thickness 0.0787 in	Sim. to ISO 62
Moisture Absorption	0.150 % @Thickness 2.00 mm	0.150 % @Thickness 0.0787 in	Sim. to ISO 62
Viscosity Number	100 cm³/g	1.00 dl/g	ISO 307, 1157, 1628
Linear Mold Shrinkage, Flow	0.0050 cm/cm	0.0050 in/in	ISO 294-4, 2577
	0.0060 cm/cm	0.0060 in/in	annealed; ISO 294-4
	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	0.012 cm/cm	0.012 in/in	ISO 294-4, 2577
	0.0145 cm/cm	0.0145 in/in	annealed; ISO 294-4
	0.0030 cm/cm @Treatment Temp. 80.0 °C, Time 173000 sec	0.0030 in/in @Treatment Temp. 176 °F, Time 48.0 hour	Postmolding shrinkage; ISO 294-4
Melt Flow	6.0 g/10 min @Load 2.16 kg, Temperature 250 °C	6.0 g/10 min @Load 4.76 lb, Temperature 482 °F	cm³/10min Volumetric; ISO 1133
	9.0 g/10 min @Load 2.16 kg, Temperature 250 °C	9.0 g/10 min @Load 4.76 lb, Temperature 482 °F	ISO 1133

Mechanical Properties	Metric	English	Comments
Tensile Strength at Break	113 MPa	16400 psi	ISO 527-1/-2
Elongation at Break	3.0 %	3.0 %	ISO 527-1/-2
Tensile Modulus	8.50 GPa	1230 ksi	ISO 527-1/-2
Flexural Strength	170 MPa	24700 psi	ISO 178
Poissons Ratio	0.34	0.34
Izod Impact, Notched (ISO)	7.00 kJ/m² @Temperature -30.0 °C	3.33 ft-lb/in² @Temperature -22.0 °F	ISO 180/1A
	8.00 kJ/m² @Temperature 23.0 °C	3.81 ft-lb/in² @Temperature 73.4 °F	ISO 180/1A
Izod Impact, Unnotched (ISO)	35.0 kJ/m² @Temperature -30.0 °C	16.7 ft-lb/in² @Temperature -22.0 °F	ISO 180/1U
	36.0 kJ/m² @Temperature 23.0 °C	17.1 ft-lb/in² @Temperature 73.4 °F	ISO 180/1U
Charpy Impact Unnotched	5.30 J/cm² @Temperature -30.0 °C	25.2 ft-lb/in² @Temperature -22.0 °F	ISO 179/1eU
	5.50 J/cm² @Temperature 23.0 °C	26.2 ft-lb/in² @Temperature 73.4 °F	ISO 179/1eU
Charpy Impact, Notched	0.780 J/cm² @Temperature -30.0 °C	3.71 ft-lb/in² @Temperature -22.0 °F	ISO 179/1eA
	0.850 J/cm² @Temperature 23.0 °C	4.04 ft-lb/in² @Temperature 73.4 °F	ISO 179/1eA
Tensile Creep Modulus, 1 hour	7200 MPa	1.04e+6 psi	1h; ISO 899-1
Tensile Creep Modulus, 1000 hours	5500 MPa	798000 psi	1000h; ISO 899-1

Electrical Properties	Metric	English	Comments
Volume Resistivity	>= 1.00e+15 ohm-cm	>= 1.00e+15 ohm-cm	IEC 62631-3-1
Surface Resistance	1.00e+15 ohm	1.00e+15 ohm	IEC 62631-3-2
Dielectric Constant	3.7 @Frequency 1e+6 Hz	3.7 @Frequency 1e+6 Hz	IEC 62631-2-1
	3.8 @Frequency 100 Hz	3.8 @Frequency 100 Hz	IEC 62631-2-1
Dielectric Strength	28.0 kV/mm	711 kV/in	IEC 60243-1
Dissipation Factor	0.0030 @Frequency 100 Hz	0.0030 @Frequency 100 Hz	IEC 62631-2-1
	0.016 @Frequency 1e+6 Hz	0.016 @Frequency 1e+6 Hz	IEC 62631-2-1
Comparative Tracking Index	250 V	250 V	IEC 60112

Thermal Properties	Metric	English	Comments
CTE, linear, Parallel to Flow	40.0 µm/m-°C	22.2 µin/in-°F	ISO 11359-1/-2
CTE, linear, Transverse to Flow	100 µm/m-°C	55.6 µin/in-°F	ISO 11359-1/-2
Melting Point	224 °C	435 °F	10°C/min; ISO 11357-1/-3
Deflection Temperature at 0.46 MPa (66 psi)	220 °C	428 °F	ISO 75-1/-2
Deflection Temperature at 1.8 MPa (264 psi)	205 °C	401 °F	ISO 75-1/-2
Glass Transition Temp, Tg	55.0 °C	131 °F	10°C/min; ISO 11357-1/-2
Flammability, UL94	V-0 @Thickness 0.750 mm	V-0 @Thickness 0.0295 in	IEC 60695-11-10
	V-0 @Thickness 1.50 mm	V-0 @Thickness 0.0591 in	IEC 60695-11-10
Oxygen Index	31 %	31 %	ISO 4589-1/-2

Processing Properties	Metric	English	Comments
Melt Temperature	250 °C	482 °F	Optimum, Injection
	240 - 260 °C	464 - 500 °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	Flame retardant
Back pressure	As low as possible
Drying Recommended	yes		Injection
FMVSS Class	DNI		ISO 3795 (FMVSS 302)
Part Marking Code	>PBT-GF20FR(17)<		ISO 11469
Polymer	PBT-GF20 FR(17)
Processing Hold Pressure Time (s/mm)	3		Injection
Resin Identification	PBT-GF20FR(17)		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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PDSY5084 / 160911

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