Celanese Crastin® S610SF BK851 Polybutylene Terephthalate (PBT)

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Celanese Crastin® S610SF BK851 Polybutylene Terephthalate (PBT)
Categories:	Polymer; Thermoplastic; Polyester, TP; Polybutylene Terephthalate (PBT)
Material Notes:	Unreinforced Low Viscosity Polybutylene Terephthalate Developed for Super Fast Production Crastin S610SF is an unreinforced low viscosity polybutylene terephthalate for injection molding. It has high flow characteristics and is specifically suitable fo Former DuPont product acquired by Celanese in 2022.
Key Words:	PBT
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Physical Properties	Metric	English	Comments

Density	1.31 g/cc	0.0473 lb/in³	ISO 1183
Linear Mold Shrinkage, Flow	0.017 cm/cm	0.017 in/in	ISO 294-4, 2577
Linear Mold Shrinkage, Transverse	0.016 cm/cm	0.016 in/in	ISO 294-4, 2577
Melt Flow	50 g/10 min @Load 2.16 kg, Temperature 250 °C	50 g/10 min @Load 4.76 lb, Temperature 482 °F	ISO 1133

Mechanical Properties	Metric	English	Comments
Tensile Strength, Yield	60.0 MPa	8700 psi	ISO 527-1/-2
Elongation at Break	13 %	13 %	Nominal; ISO 527-1/-2
Elongation at Yield	10 %	10 %	ISO 527-1/-2
Tensile Modulus	2.60 GPa	377 ksi	ISO 527-1/-2
Poissons Ratio	0.38	0.38
Charpy Impact, Notched	0.400 J/cm² @Temperature 23.0 °C	1.90 ft-lb/in² @Temperature 73.4 °F	ISO 179/1eA

Thermal Properties	Metric	English	Comments
Melting Point	224 °C	435 °F	10°C/min; ISO 11357-1/-3
Deflection Temperature at 1.8 MPa (264 psi)	50.0 °C	122 °F	ISO 75-1/-2
Glass Transition Temp, Tg	55.0 °C	131 °F	10°C/min; ISO 11357-1/-2
Flame Spread	24.0 mm/min @Thickness 1.00 mm	0.945 in/min @Thickness 0.0394 in	ISO 3795 (FMVSS 302)

Processing Properties	Metric	English	Comments
Melt Temperature	240 °C	464 °F	Optimum, Injection
	235 - 260 °C	455 - 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
Back pressure	As low as possible
Drying Recommended	yes		Injection
FMVSS Class	B		ISO 3795 (FMVSS 302)
Fogging (mg)	0		G-value (condensate); ISO 6452
Part Marking Code	>PBT<		ISO 11469
Polymer	PBT
Processing Hold Pressure Time (s/mm)	4		Injection
Resin Identification	PBT		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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PDSY5045 / 160887

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