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This is the free Material Data Center Datasheet of CELANEX® PBT 357 FR - PBT - Celanese

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Caractéristiques des transformations/physiques - Propriétés mécaniques - Propriétés thermiques - Propriétés diverses
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Caractéristiques des transformations/physiquesValeurUnitéNorme du test
ISO Data
Indice de fluidité à chaud en volume, MVR 0.8 cm³/10min ISO 1133
Température 250 °C -
Charge 2.16 kg -
Retrait au moulage, parallèle 0.7 % ISO 294-4, 2577
Retrait au moulage, perpendiculaire 0.6 % ISO 294-4, 2577
Propriétés mécaniquesValeurUnitéNorme du test
ISO Data
Module en traction 1981 MPa ISO 527
Contrainte d'écoulement 47 MPa ISO 527
Déformation au seuil d'écoulement 4.9 % ISO 527
Résistance au choc Charpy, +23°C N kJ/m² ISO 179/1eU
Résistance au choc Charpy (entaillé), +23°C 17 kJ/m² ISO 179/1eA
Résistance au choc Charpy (entaillé), -30°C 9 kJ/m² ISO 179/1eA
Propriétés thermiquesValeurUnitéNorme du test
ISO Data
Température de fléchissement s/chrg, 1.80 MPa 94 °C ISO 75-1/-2
Température de fléchissement s/chrg, 0.45 MPa 105 °C ISO 75-1/-2
Température de ramolliss. Vicat, B 113 °C ISO 306
Propriétés diversesValeurUnitéNorme du test
Masse volumique 1280 kg/m³ ISO 1183
Caractéristiques
Transformation
Moulage par injection
Conditionnement
Granulés
Autres informations
Moulages par injection
To avoid hydrolytic degradation during processing, CELANEX resins have to be dried to a moisture level equal to or less than 0.02%. Drying should be done in a dehumidifying hopper dryer capable of dewpoints <-30°F (-34°C) at 250°F (121°C) for 4 hours.
Rear Temperature 480-520(249-271) deg F (deg C)
Center Temperature 480-530(249-276) deg F (deg C)
Front Temperature 480-530(249-276) deg F (deg C)
Nozzle Temperature 480-530(249-276) deg F (deg C)
Melt Temperature 480-520(249-271) deg F (deg C)
Mold Temperature 80-180(27-82) deg F (deg C)
Back Pressure 50-100 psi
Screw Speed Medium
Injection Speed Fast

Injection speed, injection pressure and holding pressure have to be optimized to the individual article geometry. To avoid material degradation during processing low back pressure and minimum screw speed have to be used. Overheating of the material has to be avoided, in particular for flame retardant grades.
Conditions générales
Copyright Altair Engineering GmbH. Altair Engineering GmbH assumes no liability for the system to be free of errors. The user takes sole responsibility for the use of this data under the exclusion of every liability from Altair Engineering GmbH; this is especially valid for claims of compensation resulting from consequential damages. Altair explicitly points out that any decision about the application of materials must be double checked with the producer of this material. This includes all contents of this system. Copyright laws are applicable for the content of this system.
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