Crastin® ST820 BK503

Alternative and trade names
PBT-HI

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Description

Common features of Crastin® thermoplastic polyester resin include mechanical and physical properties such as stiffness and toughness, heat resistance, friction and wear resistance, excellent surface finishes and good colourability. Crastin® thermoplastic polyester resin has excellent electrical insulation characteristics and high arc-resistant grades are available. Many flame retardant grades have UL recognition (class V-0). Crastin® thermoplastic polyester resin typically has high chemical and heat ageing resistance. The good melt stability of Crastin® thermoplastic polyester resin normally enables the recycling of properly handled production waste.If recycling is not possible, DuPont recommends, as the preferred option, incineration with energy recovery (-24 kJ/g of base polymer) in appropriately equipped installations. For disposal, local regulations have to be observed. Crastin® thermoplastic polyester resin typically is used in demanding applications in the electronics, electrical, automotive, mechanical engineering, chemical, domestic appliances and sporting goods industry.Crastin® ST820BK503 is an unreinforced, Super Tough polybutylene terephthalate resin for injection molding.

This material data has been provided by Matmatch.

"Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Properties

General

Property	Temperature	Value	Comment
Density	23.0 °C	1.22 g/cm³ Show Material materials with Density of 1.22 g/cm³	ISO 1183

Mechanical

Property	Temperature	Value	Comment
Elastic modulus	23.0 °C	1.6 GPa Show Material materials with Elastic modulus of 1.6 GPa	ISO 527-1/-2
Elongation	23.0 °C	130 % Show Material materials with Elongation of 130 %	ISO 527-1/-2 \| 50mm/min
Elongation at yield	23.0 °C	7 % Show Material materials with Elongation at yield of 7 %	ISO 527-1/-2
Flexural modulus	23.0 °C	1.5 GPa Show Material materials with Flexural modulus of 1.5 GPa	ISO 178
Flexural strength	23.0 °C	50 MPa Show Material materials with Flexural strength of 50 MPa	ISO 178
Impact strength, Charpy notched	-6.0 °C	10 kJ/m² Show Material materials with Impact strength, Charpy notched of 10 kJ/m²	ISO 179/1eA
	23.0 °C	85 kJ/m² Show Material materials with Impact strength, Charpy notched of 85 kJ/m²	ISO 179/1eA

Impact strength, Izod unnotched	-40.0 °C	10 kJ/m² Show Material materials with Impact strength, Izod unnotched of 10 kJ/m²	ISO 180/1A
	23.0 °C	60 kJ/m² Show Material materials with Impact strength, Izod unnotched of 60 kJ/m²	ISO 180/1A
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Poisson's ratio	23.0 °C	0.42 [-] Show Material materials with Poisson's ratio of 0.42 [-]
Yield strength	23.0 °C	36 MPa Show Material materials with Yield strength of 36 MPa	ISO 527-1/-2
Impact strength, Charpy unnotched	No Break @ 23,-6°C, ISO 179/1eA
Impact strength, Izod notched	No Break @ 23,-30°C, ISO180/1A

Thermal

Property	Value	Comment
Heat deflection temperature, 0.45 MPa	145 °C Show Material materials with Heat deflection temperature, 0.45 MPa of 145 °C	ISO 75-1/-2 \| annealed
Heat deflection temperature, 1.80 MPa	50 °C Show Material materials with Heat deflection temperature, 1.80 MPa of 50 °C	ISO 75-1/-2
Melting point	225 °C Show Material materials with Melting point of 225 °C	ISO 11357-1/-3 \| 18°F/min
Flammability	FMVSS Class: B -, Burning rate, Thickness 1 mm: 38 mm/min

Rheological Properties

Property	Temperature	Value	Comment
Shrinkage	23.0 °C	1.8 % Show Material materials with Shrinkage of 1.8 %	ISO 294-4, 2577
Shrinkage, transverse	23.0 °C	1.7 % Show Material materials with Shrinkage, transverse of 1.7 %	ISO 294-4, 2577

Technological properties

Property
Processing methods	Drying Recommended: yes, Drying Temperature: 120°C, Drying Time, Dehumidified Dryer: 2-4h, Processing Moisture Content: ≤0.04%, Melt Temperature Optimum: 250°C, Min. melt temperature: 240°C, Max. melt temperature: 260°C, Mold Temperature Optimum: 80°C, Min. mold temperature: 30°C, Max. mold temperature: 130°C, Hold pressure range: ≥60MPa, Hold pressure time: 3s/mm, Back pressure: As low as possible, Ejection temperature: 170°C

Crastin® ST820 BK503

Description

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