Selenis SELEKT XP 311 PCTG Copolyester for Injection Molding

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Selenis SELEKT XP 311 PCTG Copolyester for Injection Molding
Categories:	Polymer; Thermoplastic; Polyester, TP; Polycyclohexylenedimethylene Terephthalate (PCT); Glycol-Modified PCT (PCTG) Copolyester
Material Notes:	Selenis Selekt XP 311 is a copolyester that is suitable for injection molding applications. From thin wall and intricate parts to thicker cross-sections where toughness is required. Injection molded parts made from Selenis Selekt XP 311 are water-clear and glossy, whilst virtually unbreakable. Selenis Selekt XP 311 features excellent impact strength and outstanding chemical resistance. Fast injection cycles are possible due to high flowability. Thanks to Selenis Selekt XP 311 high dimensional stability, multiple parts products may be assembled with snap-fit connectors, maintaining the strength required to sustain daily wear and tear. Molded parts maybe sterilized by Gamma-radiation or EtO sterilization process Selenis Selekt XP 311 is a ready-to-use product supplied with a demolding agent to ease processing. Information provided by Selenis.
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Physical Properties	Metric	English	Comments

Bulk Density	0.790 g/cc	0.0285 lb/in³
Density	1.26 g/cc	0.0455 lb/in³	ASTM D792
Water Absorption	<= 0.13 %	<= 0.13 %	ASTM D570
Viscosity Test	76 - 80 cm³/g	0.76 - 0.80 dl/g	Intrinsic; ISO 1628-5
Linear Mold Shrinkage	0.0020 - 0.0050 cm/cm	0.0020 - 0.0050 in/in	ASTM D 955
ASTM Color	<= 1.0	<= 1.0	b*; ASTM D6290
	>= 64	>= 64	L*; ASTM D6290

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	78	78	ASTM D2240
Tensile Strength	44.9 MPa	6510 psi	(σm); ISO 527 -1/- 2
Tensile Strength, Yield	44.9 MPa	6510 psi	(σy); ISO 527 -1/- 2
Elongation at Break	319 %	319 %	Nominal, (εtb); ISO 527 -1/- 2
Elongation at Yield	4.3 %	4.3 %	(εm); ISO 527 -1/- 2
	4.5 %	4.5 %	(εy); ISO 527 -1/- 2
Tensile Modulus	1.93 GPa	280 ksi	ISO 527 -1/- 2
Flexural Strength	56.4 MPa	8180 psi	ISO 178
Flexural Modulus	1.776 GPa	257.6 ksi	ISO 178
Izod Impact, Notched (ISO)	5.70 kJ/m² @Temperature -30.0 °C	2.71 ft-lb/in² @Temperature -22.0 °F	ISO 180/A
	6.50 kJ/m² @Temperature 0.000 °C	3.09 ft-lb/in² @Temperature 32.0 °F	ISO 180/A
	7.50 kJ/m² @Temperature 23.0 °C	3.57 ft-lb/in² @Temperature 73.4 °F	50% RH; ISO 180/A
Izod Impact, Unnotched (ISO)	NB @Temperature -30.0 °C	NB @Temperature -22.0 °F	ISO 180/U
	NB @Temperature 0.000 °C	NB @Temperature 32.0 °F	ISO 180/U
	NB @Temperature 23.0 °C	NB @Temperature 73.4 °F	50% RH; ISO 180/U
Charpy Impact Unnotched	NB @Temperature -30.0 °C	NB @Temperature -22.0 °F	ISO 179-1/1eU
	NB @Temperature 0.000 °C	NB @Temperature 32.0 °F	ISO 179-1/1eU
	NB @Temperature 23.0 °C	NB @Temperature 73.4 °F	50% RH; ISO 179-1/1eU
Charpy Impact, Notched	0.570 J/cm² @Temperature -30.0 °C	2.71 ft-lb/in² @Temperature -22.0 °F	ISO 179-1/1eA
	0.650 J/cm² @Temperature 0.000 °C	3.09 ft-lb/in² @Temperature 32.0 °F	ISO 179-1/1eA
	0.750 J/cm² @Temperature 23.0 °C	3.57 ft-lb/in² @Temperature 73.4 °F	50% RH; ISO 179-1/1eA
Puncture Energy	44.2 J	32.6 ft-lb	Impact Behavior, Energy Maximum Load; ISO 6603-2/3.3 m/s

Thermal Properties	Metric	English	Comments
Deflection Temperature at 0.46 MPa (66 psi)	67.6 °C	154 °F	ISO 75-1/-2
Deflection Temperature at 1.8 MPa (264 psi)	60.0 °C	140 °F	ISO 75-1/-2
Glass Transition Temp, Tg	88.0 °C	190 °F	ASTM D3418

Optical Properties	Metric	English	Comments
Haze	<= 1.0 % @Thickness 2.00 mm	<= 1.0 % @Thickness 0.0787 in	ASTM D1003
Gloss	167 %	167 %	60º; ASTM D2457
Yellow Index	<= 1.0 % @Thickness 2.00 mm	<= 1.0 % @Thickness 0.0787 in	ASTM (E313-73)
Transmission, Visible	80 % @Thickness 5.00 - 6.00 mm, Wavelength 400 nm	80 % @Thickness 0.197 - 0.236 in, Wavelength 400 nm	Disk
	82 % @Thickness 4.00 mm, Wavelength 400 nm	82 % @Thickness 0.157 in, Wavelength 400 nm	Disk
	84 % @Thickness 3.00 mm, Wavelength 400 nm	84 % @Thickness 0.118 in, Wavelength 400 nm	Disk
	85 % @Thickness 2.00 mm, Wavelength 400 nm	85 % @Thickness 0.0787 in, Wavelength 400 nm	Disk
	87 % @Thickness 4.00 - 6.00 mm, Wavelength 440 - 660 nm	87 % @Thickness 0.157 - 0.236 in, Wavelength 440 - 660 nm	Disk
	88 % @Thickness 1.00 mm, Wavelength 400 nm	88 % @Thickness 0.0394 in, Wavelength 400 nm	Disk
	89 % @Thickness 1.00 - 3.00 mm, Wavelength 440 - 660 nm	89 % @Thickness 0.0394 - 0.118 in, Wavelength 440 - 660 nm	Disk
	89 % @Thickness 1.00 - 6.00 mm, Wavelength 660 - 740 nm	89 % @Thickness 0.0394 - 0.236 in, Wavelength 660 - 740 nm	Disk
UV Transmittance	60 % @Thickness 5.00 - 6.00 mm, Wavelength 370 nm	60 % @Thickness 0.197 - 0.236 in, Wavelength 370 nm	Disk
	65 % @Thickness 4.00 mm, Wavelength 370 nm	65 % @Thickness 0.157 in, Wavelength 370 nm	Disk
	70 % @Thickness 3.00 mm, Wavelength 370 nm	70 % @Thickness 0.118 in, Wavelength 370 nm	Disk
	75 % @Thickness 2.00 mm, Wavelength 370 nm	75 % @Thickness 0.0787 in, Wavelength 370 nm	Disk
	83 % @Thickness 1.00 mm, Wavelength 370 nm	83 % @Thickness 0.0394 in, Wavelength 370 nm	Disk

Processing Properties	Metric	English	Comments
Melt Temperature	180 - 250 °C	356 - 482 °F
Drying Temperature	<= 74.0 °C	<= 165 °F	to avoid chips sticking together in dryer hopper
	>= 70.0 °C @Time 21600 - 28800 sec	>= 158 °F @Time 6.00 - 8.00 hour
Moisture Content	<= 0.0040 %	<= 0.0040 %	dried
Dew Point	-40.0 °C	-40.0 °F

Descriptive Properties
Particle size	320 ± 50 mg/20 chips
Pellet Shape	Cylindrical

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

PSELE952 / 243450

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