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® 4056P is a low modulus Hytrel® grade with nominal durometer hardness of 40D and with high impact resistance down to -40°C. It is delivered in a powder form.
Impact strength, Charpy notched Ivnot
No Break @ 23,-6°C, ISO 179/1eA
Impact strength, Charpy unnotched Iunnot
No Break @ 23,-6°C,ISO 179/1eU
FMVSS Class: B -, Burning rate, Thickness 1 mm: <80 mm/min
Glass transition temperatureTg
ISO 11357-1/-2 | 18°F/min
ISO 11357-1/-3 | 18°F/min
Comparative tracking indexCTI
600 V at 23 °C
Melt mass-flow rateMFR
ISO 1133 | 190°C/2.16kg
Melt volume-flow rateMVR
This material data has been provided by Matmatch.