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This is the free Material Data Center Datasheet of Ultraform® N2770 K AT - POM - BASF

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Caractéristiques des transformations/physiques - Propriétés mécaniques - Propriétés thermiques - Propriétés électriques - Propriétés diverses - Recommandations pour la transformation Moulage par injection
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Informations produit
Injection molding grade with enhanced wear behavior for sliding parts.

Abbreviated designation according to ISO 1043-1: POM
Designation according to ISO 29988-POM-K,,M-GNRS2,3-2
Caractéristiques des transformations/physiquesValeurUnitéNorme du test
ISO Data
Indice de fluidité à chaud en volume, MVR 7.5 cm³/10min ISO 1133
Température 190 °C -
Charge 2.16 kg -
Retrait au moulage, parallèle 2.1 % ISO 294-4, 2577
Retrait au moulage, perpendiculaire 2.1 % ISO 294-4, 2577
Propriétés mécaniquesValeurUnitéNorme du test
ISO Data
Module en traction 2700 MPa ISO 527
Contrainte d'écoulement 61 MPa ISO 527
Déformation au seuil d'écoulement 9.5 % ISO 527
Déformation nominale à la rupture 26 % ISO 527
Module de fluage en traction, 1000h 1400 MPa ISO 899-1
Résistance au choc Charpy, +23°C 100 kJ/m² ISO 179/1eU
Résistance au choc Charpy, -30°C 100 kJ/m² ISO 179/1eU
Résistance au choc Charpy (entaillé), +23°C 5 kJ/m² ISO 179/1eA
Résistance au choc Charpy (entaillé), -30°C 4 kJ/m² ISO 179/1eA
Propriétés thermiquesValeurUnitéNorme du test
ISO Data
Température de fusion, 10°C/min 166 °C ISO 11357-1/-3
Température de fléchissement s/chrg, 1.80 MPa 90 °C ISO 75-1/-2
Coeffic. de dilatation therm. linéique, parallèle 110 E-6/K ISO 11359-1/-2
Inflammabilité ep. nom. 1.5 mm HB class IEC 60695-11-10
Propriétés électriquesValeurUnitéNorme du test
ISO Data
Permittivité relative, 1MHz 3.8 - IEC 62631-2-1
Facteur de pertes, 1MHz 50 E-4 IEC 62631-2-1
Résistivité transversale 1E13 Ohm*m IEC 62631-3-1
Résistivité superficielle 1E13 Ohm IEC 62631-3-2
Indice de résistance au cheminement 600 - IEC 60112
Propriétés diversesValeurUnitéNorme du test
Absorption d'eau 0.9 % Sim. to ISO 62
Absorption d'humidité 0.2 % Sim. to ISO 62
Masse volumique 1430 kg/m³ ISO 1183
Recommandations pour la transformation Moulage par injectionValeurUnitéNorme du test
Pré-séchage - température 100 - 110 °C -
Pré-séchage - temps 3 h -
L'humidité de traitement ≤0.2 % -
Température de la matière fondue 190 - 230 °C -
Température du moule 60 - 120 °C -
Caractéristiques
Transformation
Moulage par injection
Caractéristiques
Grade tribologique, Copolymère
Autres informations
Moulages par injection
PROCESSING
injection molding, Melt temperature, range: 190 - 230 °C
injection molding, Mold temperature, range: 60 - 120 °C

Processing

Usual single-flighted three-section screws with an effective screw length of at least 15 D, better 20 - 23 D are suitable for the injection molding of Ultraform.

Pretreatment

Granules or pellets in original packaging can be processed without any special pretreatment. Granules or pellets which have become moist due to prolonged or incorrect storage (e.g. by formation of condensed water) must be dried in dehumidifying or recirculating air dryers for approx. 3 hours at about 100 - 110 °C. The moisture content should not exceed 0.2 %.


Postprocessing

If parts were produced at a comparatively low mold temperature (e.g. in order to obtain short cycle times) and must not change their geometry in use thermal postprocessing inducing dimensional changes by postcrystallization may be necessary. In such cases parts should be stored in an oven with recirculated air at temperatures of 100 - 130 °C until dimensions don't change significantly any further. The time needed for this has to be determined experimentally.
Conditions générales
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