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® 4068FG is a high performance thermoplastic polyester elastomer developed for applications in contact with food.FOOD CONTACTThis product is manufactured according to Good Manufacturing Practice (GMP) principles and generally accepted in food contact applications in Europe and the USA when meeting applicable use conditions. For details, individual compliance statements are available from your DuPont representative.
See where Hytrel® 4068FG falls on the material property chart for Density against Elastic modulus in your materials selection and design process. Our Ashby charts are interactive with more technical data upon clicking. Sign up to get access to this premium feature for free.
Density
ρ1.11 g/cm³ at 23 °C
ISO 1183
Water absorption
cwater0.7 % at 23 °C
Sim. to ISO 62 | 80mil
Impact strength, Charpy notched Ivnot
No Break @ 23,-6°C, ISO 179/1eA
Impact strength, Charpy unnotched Iunnot
No Break @ 23,-6°C, ISO 179/1eA
Impact strength, Izod unnotched IIzod,unnot
No Break @ 23,-30,-40°C, ISO 179/1eU
Coefficient of thermal expansion
α2.2999999999999998E-4 1/K at 23 °C
ISO 11359-1/-2
Coefficient of thermal expansion, transverse
αtrans2.2999999999999998E-4 1/K at 23 °C
ISO 11359-1/-2
Flammability
FMVSS Class: B -, Burning rate, Thickness 1 mm: <80 mm/min
Glass transition temperature
Tg-55 °C
ISO 11357-1/-2 | 18°F/min
Melting point
Tm193 °C
ISO 11357-1/-3 | 18°F/min
Thermal diffusivity
αdiff0 mm²/s at 23 °C
Vicat softening temperature
Tsoft130 °C
ISO 306 | 90°F, 2 lbf
Comparative tracking index
CTI600 V at 23 °C
IEC 60112
Dielectric constant, 100Hz
εr,100Hz4.8 [-] at 23 °C
IEC 62631-2-1
Dielectric constant, 1MHz
εr,1MHz4.7 [-] at 23 °C
IEC 62631-2-1
Dielectric strength
EDS18 kV/mm at 23 °C
IEC 60243-1
Melt mass-flow rate
MFR8.5 g/10min
ISO 1133 | 220°C/2.16kg
Melt volume-flow rate
MVR8.8 cm³/10min
ISO 1133
Shrinkage
cshrink1 % at 23 °C
ISO 294-4, 2577
Shrinkage, transverse
cshrink, trans0.9 % at 23 °C
ISO 294-4, 2577
Processing methods
Drying Recommended: yes, Drying Temperature: 100°C, Drying Time, Dehumidified Dryer: 2-3h, Processing Moisture Content: ≤0.08%, Melt Temperature Optimum: 225°C, Min. melt temperature: 220°C, Max. melt temperature: 250°C, Mold Temperature Optimum: 40°C, Min. mold temperature: 30°C, Max. mold temperature: 40°C
This material data has been provided by Matmatch.