DuPont Performance Polymers Crastin® ST820 BK503 PBT (Unverified Data**)

Category	Polymer , Thermoplastic , Polyester, TP , Polybutylene Terephthalate (PBT)
Manufacturer
Trade Name
Port	Ningbo port,China
Trade Terms	FOB, CFR, CIF
Payment Terms	L/C, T/T, Western Union
Download PDF	DuPont Performance Polymers Crastin® ST820 BK503 PBT (Unverified Data**).pdf
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Material Notes:

Crastin® ST820 BK503 is an unreinforced, Super Tough, black polybutylene terephthalate resin for injection molding.Information provided by DuPont Performance Polymers

Physical Properties	Metric	English	Comments
Specific Gravity	1.23 g/cc	1.23 g/cc	ASTM D792
Density	1.22 g/cc	0.0441 lb/in³	ISO 1183
Linear Mold Shrinkage	0.011 cm/cm	0.011 in/in	Flow
	0.017 cm/cm	0.017 in/in	Transverse
Linear Mold Shrinkage, Flow	0.018 cm/cm @Thickness 2.00 mm	0.018 in/in @Thickness 0.0787 in	ISO 294-4
Linear Mold Shrinkage, Transverse	0.017 cm/cm @Thickness 2.00 mm	0.017 in/in @Thickness 0.0787 in	ISO 294-4

Mechanical Properties	Metric	English	Comments
Tensile Strength	37.0 MPa @Temperature 23.0 °C	5370 psi @Temperature 73.4 °F	ASTM D638
Tensile Strength, Yield	36.0 MPa @Temperature 23.0 °C	5220 psi @Temperature 73.4 °F	ISO 527
Elongation at Break	>= 50 % @Temperature 23.0 °C	>= 50 % @Temperature 73.4 °F	nominal; ISO 527
	130 % @Temperature 23.0 °C	130 % @Temperature 73.4 °F	50mm/min; ISO 527
	145 % @Temperature 23.0 °C	145 % @Temperature 73.4 °F	ASTM D638
Elongation at Yield	7.0 % @Temperature 23.0 °C	7.0 % @Temperature 73.4 °F	ISO 527
Tensile Modulus	1.60 GPa @Temperature 23.0 °C	232 ksi @Temperature 73.4 °F	ASTM D638
	1.60 GPa @Temperature 23.0 °C	232 ksi @Temperature 73.4 °F	ISO 527
Flexural Strength	50.0 MPa @Temperature 23.0 °C	7250 psi @Temperature 73.4 °F	ISO 178
	53.0 MPa @Temperature 23.0 °C	7690 psi @Temperature 73.4 °F	ASTM D790
Flexural Modulus	1.50 GPa @Temperature 23.0 °C	218 ksi @Temperature 73.4 °F	ISO 178
	1.682 GPa @Temperature 23.0 °C	244.0 ksi @Temperature 73.4 °F	ASTM D790
Izod Impact, Notched	1.17 J/cm @Temperature -40.0 °C	2.19 ft-lb/in @Temperature -40.0 °F	ASTM D256
	NB @Temperature 23.0 °C	NB @Temperature 73.4 °F	ASTM D256
Izod Impact, Unnotched	NB @Temperature -40.0 °C	NB @Temperature -40.0 °F	ASTM D4812
	NB @Temperature 23.0 °C	NB @Temperature 73.4 °F	ASTM D4812
Izod Impact, Notched (ISO)	10.0 kJ/m² @Temperature -40.0 °C	4.76 ft-lb/in² @Temperature -40.0 °F	ISO 180/1A
	60.0 kJ/m² @Temperature 23.0 °C	28.6 ft-lb/in² @Temperature 73.4 °F	ISO 180/1A
Izod Impact, Unnotched (ISO)	NB @Temperature -30.0 °C	NB @Temperature -22.0 °F	ISO 180/1U
	NB @Temperature 23.0 °C	NB @Temperature 73.4 °F	ISO 180/1U
Charpy Impact Unnotched	NB @Temperature -30.0 °C	NB @Temperature -22.0 °F	ISO 179/1eU
	NB @Temperature 23.0 °C	NB @Temperature 73.4 °F	ISO 179/1eU
Charpy Impact, Notched	1.00 J/cm² @Temperature -30.0 °C	4.76 ft-lb/in² @Temperature -22.0 °F	ISO 179/1eA
	8.50 J/cm² @Temperature 23.0 °C	40.4 ft-lb/in² @Temperature 73.4 °F	ISO 179/1eA

Thermal Properties	Metric	English	Comments
Melting Point	225 °C	437 °F	10°C/min; ISO 11357-1/-3
	225 °C	437 °F	ASTM D3418
Deflection Temperature at 0.46 MPa (66 psi)	100 °C	212 °F	ISO 75-1/-2
	120 °C	248 °F	ASTM D648
	145 °C	293 °F	Annealed; ISO 75-1/-2
Deflection Temperature at 1.8 MPa (264 psi)	47.0 °C	117 °F	ASTM D648
	50.0 °C	122 °F	ISO 75-1/-2

Electrical Properties	Metric	English	Comments
Volume Resistivity	1.00e+16 ohm-cm @Temperature 23.0 °C	1.00e+16 ohm-cm @Temperature 73.4 °F	ASTM D257
Surface Resistance	1.00e+14 ohm @Temperature 23.0 °C	1.00e+14 ohm @Temperature 73.4 °F	ASTM D257
Dielectric Constant	3.7 @Frequency 1.00e+6 Hz, Temperature 23.0 °C	3.7 @Frequency 1.00e+6 Hz, Temperature 73.4 °F	ASTM D150
	3.8 @Frequency 1000 Hz, Temperature 23.0 °C	3.8 @Frequency 1000 Hz, Temperature 73.4 °F	ASTM D150
Dielectric Strength	15.0 kV/mm @Thickness 3.20 mm, Temperature 23.0 °C	381 kV/in @Thickness 0.126 in, Temperature 73.4 °F	Short Time; ASTM D149
	23.0 kV/mm @Thickness 1.60 mm, Temperature 23.0 °C	584 kV/in @Thickness 0.0630 in, Temperature 73.4 °F	Short Time; ASTM D149
Dissipation Factor	0.0030 @Frequency 1000 Hz, Temperature 23.0 °C	0.0030 @Frequency 1000 Hz, Temperature 73.4 °F	ASTM D150
	0.021 @Frequency 1.00e+6 Hz, Temperature 23.0 °C	0.021 @Frequency 1.00e+6 Hz, Temperature 73.4 °F	ASTM D150

Processing Properties	Metric	English	Comments
Melt Temperature	250 °C	482 °F	Optimum
	240 - 260 °C	464 - 500 °F
Mold Temperature	80.0 °C	176 °F	optimum
	30.0 - 130 °C	86.0 - 266 °F
Drying Temperature	110 - 130 °C	230 - 266 °F
Dry Time	2.00 - 4.00 hour	2.00 - 4.00 hour
Moisture Content	<= 0.040 %	<= 0.040 %

Descriptive Properties	Value	Comments
Additive	Impact Modifier
	Lubricant
Appearance	Black Color
Drying Recommended	Yes
Features	Chemical Resistance, Good
	Dimensional Stability, Good
	Elongation, Good
	Impact Resistance, High
	Moisture Absorption, Low
	Processability, Good
	Toughness, Good
Forms	Pellets
Generic	PBT
Material Status	Current
Part Marking Code	>PBT-HI<	ISO 11469
Processing Method	Extrusion
	Injection Molding
Product Category	Extrusion Resins
	Toughened Resins
	Unreinforced Resins
Region Available - Global	Yes
Resin Identification	PBT-HI	ISO 1043
RoHS Compliance	Contact Manufacturer
Uses	Automotive Applications
	Industrial Applications
	Parts, Engineering

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