Covestro Makrolon® LQ 2647 Polycarbonate, UV-Stabilized

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Covestro Makrolon® LQ 2647 Polycarbonate, UV-Stabilized
Categories:	Polymer; Thermoplastic; Polycarbonate (PC); Polycarbonate, UV Stabilized
Material Notes:	UV-stabilized injection molding grade with easy mold release, suitable for spectacle glasses (LQ = Lens Quality). Information provided by Bayer. As of 1 September 2015, Bayer MaterialScience was separated from Bayer AG and officially adopted its new name – Covestro.
Key Words:	PC
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Physical Properties	Metric	English	Comments

Density	1.20 g/cc	0.0434 lb/in³
Moisture Absorption at Equilibrium	0.15 %	0.15 %	50% RH
Water Absorption at Saturation	0.35 %	0.35 %
	0.35 %	0.35 %
Melt Flow	11 g/10 min @Load 1.20 kg, Temperature 300 °C	11 g/10 min @Load 2.65 lb, Temperature 572 °F

Mechanical Properties	Metric	English	Comments
Tensile Strength, Yield	63.0 MPa	9140 psi
Elongation at Break	>= 50 %	>= 50 %	Nominal
Elongation at Yield	6.0 %	6.0 %
Tensile Modulus	2.40 GPa	348 ksi
Charpy Impact Unnotched	NB	NB
Tensile Creep Modulus, 1 hour	2200 MPa	319000 psi
Tensile Creep Modulus, 1000 hours	1900 MPa	276000 psi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	>= 1.00e+15 ohm-cm	>= 1.00e+15 ohm-cm
Surface Resistance	1.00e+15 ohm	1.00e+15 ohm
Dielectric Constant	2.9 @Frequency 1e+6 Hz	2.9 @Frequency 1e+6 Hz
	3.0 @Frequency 100 Hz	3.0 @Frequency 100 Hz
Dielectric Strength	30.0 kV/mm	762 kV/in
Dissipation Factor	0.0010 @Frequency 100 Hz	0.0010 @Frequency 100 Hz
	0.010 @Frequency 1e+6 Hz	0.010 @Frequency 1e+6 Hz
Comparative Tracking Index	275 V	275 V

Thermal Properties	Metric	English	Comments
CTE, linear, Parallel to Flow	70.0 µm/m-°C @Temperature 20.0 °C	38.9 µin/in-°F @Temperature 68.0 °F
CTE, linear, Transverse to Flow	70.0 µm/m-°C @Temperature 20.0 °C	38.9 µin/in-°F @Temperature 68.0 °F
Deflection Temperature at 0.46 MPa (66 psi)	136 °C	277 °F
Deflection Temperature at 1.8 MPa (264 psi)	129 °C	264 °F
Vicat Softening Point	143 °C	289 °F
Glass Transition Temp, Tg	148 °C	298 °F
Oxygen Index	26 %	26 %

Optical Properties	Metric	English	Comments
Refractive Index	1.586	1.586	DIN 5026-1
Transmission, Visible	89 % @Thickness 1.00 mm	89 % @Thickness 0.0394 in	ISO 489-A

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.

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