SABIC LEXAN™ Copolymer 4251R Polycarbonate (PC)

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SABIC LEXAN™ Copolymer 4251R Polycarbonate (PC)
Categories:	Polymer; Thermoplastic; Polycarbonate (PC)
Material Notes:	High heat polycarbonate copolymer blend with an excellent balance of heat resistance, processability, and impact strength. Available in a range of opaque colors. Features: High Heat Resistance Information provided by SABIC
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Physical Properties	Original Value	Comments

Specific Gravity	1.20 g/cc	ASTM D792
Density	1.10 g/cc	ISO 1183
Moisture Absorption	0.0200 %	Injection Molding
	0.0900 %	23°C / 50% RH; ISO 62
Water Absorption at Saturation	0.24 %	ISO 62-1
Viscosity	31 cP @Load 2.16 kg, Temperature 330 °C	MVR cc/10 min; ISO 1133
Linear Mold Shrinkage, Flow	0.0060 - 0.0080 cm/cm @Thickness 3.20 mm	SABIC method
Melt Flow	5.6 g/10 min @Load 1.20 kg, Temperature 300 °C	ASTM D1238

Mechanical Properties	Original Value	Comments
Tensile Strength at Break	59.0 MPa	50 mm/min; ISO 527
	63.0 MPa	50 mm/min; ASTM D638
Tensile Strength, Yield	62.0 MPa	50 mm/min; ISO 527
	64.0 MPa	50 mm/min; ASTM D638
Elongation at Break	96.1 %	50 mm/min; ISO 527
	102 %	50 mm/min; ASTM D638
Elongation at Yield	6.6 %	50 mm/min; ISO 527
	6.7 %	50 mm/min; ASTM D638
Tensile Modulus	2160 MPa	1 mm/min; ISO 527
	2180 MPa	50 mm/min; ASTM D638
Flexural Strength	101 MPa	yld, 1.3 mm/min, 50 mm span; ASTM D790
Flexural Modulus	2040 MPa	2 mm/min; ISO 178
	2230 MPa	1.3 mm/min, 50 mm span; ASTM D790
Izod Impact Notched	639 J	ASTM D256
	331 J @Temperature -30.0 °C	ASTM D256
Izod Impact, Notched (ISO)	43.0 kJ/m²	80104; ISO 180/1A
	20.0 kJ/m² @Temperature -30.0 °C	80104; ISO 180/1A
Charpy Impact, Notched	48.0 kJ/m²	Edgew 80104 sp=62mm; ISO 179/1eA
Dart Drop, Total Energy	75.0 J	ASTM D3763
	78.0 J @Temperature -30.0 °C	ASTM D3763

Thermal Properties	Original Value	Comments
CTE, linear, Parallel to Flow	61.6 µm/m-°C @Temperature -40.0 - 40.0 °C	ASTM E831
	61.6 µm/m-°C @Temperature -40.0 - 40.0 °C	ISO 11359-2
CTE, linear, Transverse to Flow	67.3 µm/m-°C @Temperature -40.0 - 40.0 °C	ASTM E831
	67.3 µm/m-°C @Temperature -40.0 - 40.0 °C	ISO 11359-2
Deflection Temperature at 1.8 MPa (264 psi)	134 °C	Flatw 80104 sp=64mm; ISO 75/Af
	136 °C @Thickness 3.20 mm	unannealed; ASTM D648
Vicat Softening Point	155 °C	Rate B/50; ISO 306
	156 °C	Rate B/50; ASTM D1525
	157 °C	Rate B/120; ISO 306

Processing Properties	Original Value	Comments
Nozzle Temperature	305 - 325 °C
Zone 2	300 - 320 °C
Zone 3	310 - 330 °C
Melt Temperature	310 - 330 °C	Injection Molding
Mold Temperature	80.0 - 115 °C
Drying Temperature	120 °C	Injection Molding
Dry Time	3.00 - 4.00 hour	Injection Molding
	48.0 hour	Cumulative; Injection Molding
Back Pressure	0.300 - 0.700 MPa
Shot Size	40 - 60 %
Vent Depth	0.00250 - 0.00760 cm
Screw Speed	40 - 70 rpm

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PSABH80079 / 288026

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