Hytrel® DYM250S BK472

Alternative and trade names
TPC-ET+PBT

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Description

Common features of Hytrel® thermoplastic polyester elastomer include mechanical and physical properties such as exceptional toughness and resilience, high resistance to creep, impact and flex fatigue, flexibility at low temperatures and good retention of properties at elevated temperatures. In addition, it resists many industrial chemicals, oils and solvents. Special grades include heat stabilised, flame retardant, food contact compliant, blow molding and extrusion grades. Concentrates offered include black pigments, UV protection additives, heat stabilisers, and flame retardants.Hytrel® thermoplastic polyester elastomer is plasticiser free.The good melt stability of Hytrel® thermoplastic polyester elastomer 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.Hytrel® thermoplastic polyester elastomer typically is used in demanding applications in the automotive, fluid power, electrical/electronic, consumer goods, appliance and power tool, sporting goods, furniture, industrial and off-road transportation/equipment industry.Hytrel® DYM250S BK472 is a medium modulus resin suited for injection molding of Air Bag Deployment Doors. It has a nominal durometer hardness of 49D and contains fine particle size carbon black.Typical applications: Air bag deployment door.

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	1.16 g/cm³ Show Material materials with Density of 1.16 g/cm³	ISO 1183

Mechanical

Property	Temperature	Value	Comment
Elastic modulus	23.0 °C	0.29 GPa Show Material materials with Elastic modulus of 0.29 GPa	ISO 527-1/-2
Elongation	23.0 °C	600 % Show Material materials with Elongation of 600 %	ISO 527-1/-2
Flexural modulus	23.0 °C	0.35 GPa Show Material materials with Flexural modulus of 0.35 GPa	ISO 178
Hardness, Shore D	23.0 °C	49 [-] Show Material materials with Hardness, Shore D of 49 [-]	max., ISO 7619-1
Impact strength, Charpy notched	-40.0 °C	120 kJ/m² Show Material materials with Impact strength, Charpy notched of 120 kJ/m²	ISO 179/1eA
	-6.0 °C	110 kJ/m² Show Material materials with Impact strength, Charpy notched of 110 kJ/m²	ISO 179/1eA

Tear strength	23.0 °C	110 kN/m Show Material materials with Tear strength of 110 kN/m	ISO 34-1
Tear strength, transverse	23.0 °C	90 kN/m Show Material materials with Tear strength, transverse of 90 kN/m	ISO 34-1
Tensile strength	23.0 °C	30 MPa Show Material materials with Tensile strength of 30 MPa	ISO 527-1/-2

Thermal

Property	Value	Comment
Brittleness temperature	-100 °C Show Material materials with Brittleness temperature of -100 °C	ISO 974
Heat deflection temperature, 0.45 MPa	48 °C Show Material materials with Heat deflection temperature, 0.45 MPa of 48 °C	ISO 75-1/-2
Heat deflection temperature, 1.80 MPa	41 °C Show Material materials with Heat deflection temperature, 1.80 MPa of 41 °C	ISO 75-1/-2
Melting point	222 °C Show Material materials with Melting point of 222 °C	ISO 11357-1/-3 \| 18°F/min
Vicat softening temperature	150 °C Show Material materials with Vicat softening temperature of 150 °C	ISO 306 \| 90°F, 2 lbf
Flammability	FMVSS Class: B -, Burning rate, Thickness 1 mm: 24 mm/min

Rheological Properties

Property	Temperature	Value	Comment
Melt mass-flow rate		13 g/10min Show Material materials with Melt mass-flow rate of 13 g/10min	ISO 1133 \| 240°C/2.16kg
Melt volume-flow rate		13 cm³/10min Show Material materials with Melt volume-flow rate of 13 cm³/10min	ISO 1133
Shrinkage	23.0 °C	1.2 % Show Material materials with Shrinkage of 1.2 %	ISO 294-4, 2577
Shrinkage, transverse	23.0 °C	1.2 % Show Material materials with Shrinkage, transverse of 1.2 %	ISO 294-4, 2577

Technological properties

Property
Processing methods	Drying Recommended: yes, Drying Temperature: 100°C, Drying Time, Dehumidified Dryer: 3-4h, Processing Moisture Content: ≤0.05%, Melt Temperature Optimum: 245°C, Min. melt temperature: 240°C, Max. melt temperature: 250°C, Mold Temperature Optimum: 45°C, Min. mold temperature: 40°C, Max. mold temperature: 55°C

Hytrel® DYM250S BK472

Description

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Properties