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This is the free Material Data Center Datasheet of RITEFLEX® XFR 655 - TPC - Celanese

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Product Texts
Riteflex XFR 655 is a thermoplastic polyester elastomer featuring a halogen-free flame retardant system and is UL certified to be V-0 at 1.5 mm in all colors. It has shore D hardness of 55 and an excellent balance of mechanical properties, flame retardant efficiency and processability.

Flammability at thickness h (1.5 mm)V-0-
Processing/Physical CharacteristicsValueUnitTest Standard
ISO Data
Melt volume-flow rate, MVR 20 cm³/10min ISO 1133
Temperature 250 °C -
Load 2.16 kg -
Mechanical propertiesValueUnitTest Standard
ISO Data
Tensile Modulus 360 MPa ISO 527
Stress at 50% strain 14 MPa ISO 527
Strain at break >50 % ISO 527
Charpy notched impact strength, +23°C 13 kJ/m² ISO 179/1eA
Tear strength 55 kN/m ISO 34-1
Shore D hardness 55 - ISO 7619-1
Thermal propertiesValueUnitTest Standard
ISO Data
Melting temperature, 10°C/min 200 °C ISO 11357-1/-3
Burning Behav. at thickness h V-0 class IEC 60695-11-10
Thickness tested 1.5 mm -
Oxygen index 37 % ISO 4589-1/-2
Electrical propertiesValueUnitTest Standard
ISO Data
Electric strength 15 kV/mm IEC 60243-1
Other propertiesValueUnitTest Standard
Density 1230 kg/m³ ISO 1183
Characteristics
Processing
Injection Molding, Profile Extrusion, Other Extrusion
Delivery form
Pellets
Special Characteristics
Flame retardant, Halogen-free
Regional Availability
North America, Europe
Other text information
Injection molding
To avoid hydrolytic degradation during processing, RITEFLEX resins have to be dried to a moisture level equal to or less than 0.05%. Drying should be done in a dehumidifying hopper dryer capable of dewpoints <-30°F (-34°C) at 225°F (121°C) for 4 hours.
Rear Temperature 390-420(200-215) deg F (deg C)
Center Temperature 420-450(215-230) deg F (deg C)
Front Temperature 420-460(215-235) deg F (deg C)
Nozzle Temperature 420-460(215-235) deg F (deg C)
Melt Temperature 430-460(220-235) deg F (deg C)
Mold Temperature 75-125(20-55) deg F (deg C)
Back Pressure 0-50 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. Up to 25% clean and dry regrind may be used.
Disclaimer
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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