SABIC LEXAN™ OQ2720 PC (Americas)

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SABIC LEXAN™ OQ2720 PC (Americas)
Categories:	Polymer; Thermoplastic; Polycarbonate (PC)
Material Notes:	Ophthalmic/safety lens market. OQ2xxx series in all transparent tints. Dedicated equipment, stringent production control conditions. Information provided by SABIC
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Physical Properties	Metric	English	Comments

Specific Gravity	1.20 g/cc	1.20 g/cc	ASTM D792
Linear Mold Shrinkage, Flow	0.0050 - 0.0070 cm/cm @Thickness 3.20 mm	0.0050 - 0.0070 in/in @Thickness 0.126 in	SABIC method
Melt Flow	7.5 g/10 min @Load 1.20 kg, Temperature 300 °C	7.5 g/10 min @Load 2.65 lb, Temperature 572 °F	ASTM D1238

Mechanical Properties	Metric	English	Comments
Tensile Strength at Break	68.0 MPa	9860 psi	50 mm/min; ASTM D638
Tensile Strength, Yield	62.0 MPa	8990 psi	50 mm/min; ASTM D638
Elongation at Break	135 %	135 %	50 mm/min; ASTM D638
Flexural Yield Strength	96.0 MPa	13900 psi	1.3 mm/min, 50 mm span; ASTM D790
Flexural Modulus	2.34 GPa	339 ksi	1.3 mm/min, 50 mm span; ASTM D790
Izod Impact, Notched	9.07 J/cm	17.0 ft-lb/in	ASTM D256
Tensile Impact Strength	640 kJ/m²	305 ft-lb/in²	ASTM D1822
Dart Drop, Total Energy	65.0 J	47.9 ft-lb	peak; ASTM D3763

Thermal Properties	Metric	English	Comments
Deflection Temperature at 1.8 MPa (264 psi)	132 °C @Thickness 6.40 mm	270 °F @Thickness 0.252 in	unannealed; ASTM D648

Optical Properties	Metric	English	Comments
Refractive Index	1.586	1.586	ASTM D542
Haze	0.60 % @Thickness 2.54 mm	0.60 % @Thickness 0.100 in	ASTM D1003
Yellow Index	0.00 %	0.00 %	ASTM D1925
Transmission, Visible	89 % @Thickness 2.54 mm	89 % @Thickness 0.100 in	ASTM D1003

Processing Properties	Metric	English	Comments
Nozzle Temperature	305 - 325 °C	581 - 617 °F	Injection Molding
Zone 1	290 - 310 °C	554 - 590 °F
Zone 2	300 - 320 °C	572 - 608 °F
Zone 3	310 - 330 °C	590 - 626 °F
Melt Temperature	310 - 330 °C	590 - 626 °F
Mold Temperature	80.0 - 115 °C	176 - 239 °F
Drying Temperature	120 °C	248 °F	Injection Molding
Dry Time	3.00 - 4.00 hour	3.00 - 4.00 hour	Injection Molding
	48.0 hour	48.0 hour	Cumulative; Injection Molding
Moisture Content	0.020 %	0.020 %
Back Pressure	0.300 - 0.700 MPa	43.5 - 102 psi
Shot Size	40 - 60 %	40 - 60 %
Vent Depth	0.00250 - 0.00760 cm	0.000984 - 0.00299 in
Screw Speed	40 - 70 rpm	40 - 70 rpm

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PSABI10520 / 243987

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