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Crastin? ST820 BK503

Manufacturer: Celanese
Produced At: Import/ China
Product Category: PBT
Product No: Crastin? ST820 BK503
Product Quantity: 25KG / BAG
Product Features: Good Impact Resistance

Product information

Crastin? ST820 BK503

THERMOPLASTIC POLYESTER RESIN

Product Description:

Unreinforced Polybutylene Terephthalate with Excellent Impact Resistance

Features	Good Impact Resistance
RoHS Compliance	Contact Manufacturer
Processing Method	Coating,Extrusion,Injection Molding,Profile Extrusion,Sheet Extrusion
Part Marking Code (ISO 11469)	PBT-HI
Resin ID (ISO 1043)	PBT-HI

Physical	Nominal Value	Unit	Test Method
Density	1.22	g/cm3	ISO 1183
Molding Shrinkage			ISO 294-4
Across Flow	1.7	%
Flow	1.8	%

Mechanical	Nominal Value	Unit	Test Method
Tensile Modulus	232000	psi	ISO 527-2
Tensile Stress (Yield)	5220	psi	ISO 527-2
Tensile Strain (Yield)	7.0	%	ISO 527-2
Nominal Tensile Strain at Break	> 50	%	ISO 527-2
Flexural Modulus	218000	psi	ISO 178
Flexural Stress	7250	psi	ISO 178
Poisson's Ratio	0.42		ISO 527
Impact	Nominal Value	Unit	Test Method
Charpy Notched Impact Strength			ISO 179/1eA
-22°F	4.8	ft·lb/in2
73°F	40	ft·lb/in2
Charpy Unnotched Impact Strength			ISO 179/1eU
-22°F	No Break
73°F	No Break
Notched Izod Impact Strength			ISO 180/1A
-40°F	4.8	ft·lb/in2
73°F	29	ft·lb/in2
Unnotched Izod Impact Strength			ISO 180/1U
-22°F	No Break
73°F	No Break

Thermal	Nominal Value	Unit	Test Method
Heat Deflection Temperature
66 psi, Unannealed	212	°F	ISO 75-2/B
66 psi, Annealed	293	°F	ISO 75-2/B
264 psi, Unannealed	122	°F	ISO 75-2/A
Melting Temperature 3	437	°F	ISO 11357-3

Flammability	Nominal Value	Unit	Test Method
Burning Rate 4 (0.0394 in)	1.5	in/min	ISO 3795
FMVSS Flammability	B		FMVSS 302
Fogging - G-value (condensate)	1.0E-4	g	ISO 6452

Fill Analysis	Nominal Value	Unit
Ejection Temperature	338	°F

Injection	Nominal Value	Unit
Drying Temperature	248	°F
Drying Time - Desiccant Dryer	2.0 to 4.0	hr
Suggested Max Moisture	0.040	%
Processing (Melt) Temp	464 to 500	°F
Melt Temperature, Optimum	482	°F
Mold Temperature	86 to 266	°F
Mold Temperature, Optimum	176	°F
Holding Pressure	8700	psi
Back Pressure	As low as possible
Drying Recommended	yes
Hold Pressure Time	3.00	s/mm

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Crastin? ST820 BK503

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