Covestro Makrolon® LQ2647 Optical Grade Polycarbonate

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Covestro Makrolon® LQ2647 Optical Grade Polycarbonate
Categories:	Polymer; Thermoplastic; Polycarbonate (PC); Polycarbonate, Optical Grade
Material Notes:	Main characteristics: • High toughness • Good heat resistance • Glass-like transparency, optical quality • High dimensional accuracy and stability Grade characteristics: • Optical lens, safety glasses • Medium viscosity, easy release • UV stabilized As of 1 September 2015, Bayer MaterialScience was separated from Bayer AG and officially adopted its new name – Covestro.
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Physical Properties	Metric	English	Comments

Bulk Density	0.660 g/cc	0.0238 lb/in³	pellets; ISO 60
Density	1.20 g/cc	0.0434 lb/in³	ISO 1183-1
Moisture Absorption at Equilibrium	0.12 %	0.12 %	ISO 62, 50% RH
Water Absorption at Saturation	0.30 %	0.30 %	ISO 62
Water Vapor Transmission	15.0 g/m²/day @Thickness 0.100 mm	0.966 g/100 in²/day @Thickness 0.00394 in	85% RH, film; ISO 15106-1
Oxygen Transmission	67.0 cc-mm/m²-24hr-atm @Thickness 0.100 mm	170 cc-mil/100 in²-24hr-atm @Thickness 0.00394 in	670 cc/m²-24hr-bar; film; b.o. ISO 2556
	70.0 cc-mm/m²-24hr-atm @Thickness 0.0254 mm	178 cc-mil/100 in²-24hr-atm @Thickness 0.00100 in	2760 cc/m²-24hr-bar; film; b.o. ISO 2556
Nitrogen Transmission	12.0 cc-mm/m²-24hr-atm @Thickness 0.100 mm	30.5 cc-mil/100 in²-24hr-atm @Thickness 0.00394 in	120 cc/m²-24hr-bar; film; b.o. ISO 2556
	13.0 cc-mm/m²-24hr-atm @Thickness 0.0254 mm	33.0 cc-mil/100 in²-24hr-atm @Thickness 0.00100 in	510 cc/m²-24hr-bar; film; b.o. ISO 2556
Carbon Dioxide Transmission	380 cc-mm/m²-24hr-atm @Thickness 0.100 mm	965 cc-mil/100 in²-24hr-atm @Thickness 0.00394 in	3800 cc/m²-24hr-bar; film; b.o. ISO 2556
	429 cc-mm/m²-24hr-atm @Thickness 0.0254 mm	1090 cc-mil/100 in²-24hr-atm @Thickness 0.00100 in	16900 cc/m²-24hr-bar; film; b.o. ISO 2556
Linear Mold Shrinkage	0.0060 - 0.0080 cm/cm	0.0060 - 0.0080 in/in	parallel/normal; b.o. ISO 2577
Linear Mold Shrinkage, Flow	0.0070 cm/cm @Thickness 2.00 mm	0.0070 in/in @Thickness 0.0787 in	60x60x2 mm; 500 bar; ISO 294-4
Linear Mold Shrinkage, Transverse	0.0075 cm/cm @Thickness 2.00 mm	0.0075 in/in @Thickness 0.0787 in	60x60x2 mm; 500 bar; ISO 294-4
Melt Flow	13 g/10 min @Load 1.20 kg, Temperature 300 °C	13 g/10 min @Load 2.65 lb, Temperature 572 °F	ISO 1133

Mechanical Properties	Metric	English	Comments
Puncture Resistance	5400 N @Temperature 23.0 °C	1210 lb (f) @Temperature 73.4 °F	ISO 6603-2
	6300 N @Temperature -30.0 °C	1420 lb (f) @Temperature -22.0 °F	ISO 6603-2
Ball Indentation Hardness	116 MPa	16800 psi	ISO 2039-1
Tensile Strength at Break	70.0 MPa	10200 psi	50 mm/min; ISO 527-1,-2
Tensile Strength, Yield	67.0 MPa	9720 psi	50 mm/min; ISO 527-1,-2
Elongation at Break	>= 50 %	>= 50 %	Nominal, 50 mm/min; ISO 527-1,-2
	130 %	130 %	50 mm/min; b.o. ISO 527-1,-2
Elongation at Yield	6.1 %	6.1 %	50 mm/min; ISO 527-1,-2
Tensile Modulus	2.40 GPa	348 ksi	1 mm/min; ISO 527-1,-2
Flexural Strength	98.0 MPa	14200 psi	2 mm/min; ISO 178
Flexural Yield Strength	74.0 MPa @Strain 3.5 %	10700 psi @Strain 3.5 %	2 mm/min; ISO 178
Flexural Modulus	2.40 GPa	348 ksi	2 mm/min; ISO 178
Flexural Strain at Yield	7.0 %	7.0 %	2 mm/min; ISO 178
Izod Impact, Notched (ISO)	15.0 kJ/m² @Thickness 3.20 mm, Temperature -30.0 °C	7.14 ft-lb/in² @Thickness 0.126 in, Temperature -22.0 °F	complete break; b.o. ISO 180-A
	70.0 kJ/m² @Thickness 3.20 mm, Temperature 23.0 °C	33.3 ft-lb/in² @Thickness 0.126 in, Temperature 73.4 °F	partial break; b.o. ISO 180-A
Charpy Impact Unnotched	NB @Temperature 23.0 °C	NB @Temperature 73.4 °F	ISO 179-1eU
	NB @Temperature -30.0 °C	NB @Temperature -22.0 °F	ISO 179-1eU
	NB @Temperature -60.0 °C	NB @Temperature -76.0 °F	ISO 179-1eU
Charpy Impact, Notched	1.40 J/cm² @Thickness 3.00 mm, Temperature -30.0 °C	6.66 ft-lb/in² @Thickness 0.118 in, Temperature -22.0 °F	complete break; ISO 7391/b.o. ISO 179-1eA
	7.00 J/cm² @Thickness 3.00 mm, Temperature 23.0 °C	33.3 ft-lb/in² @Thickness 0.118 in, Temperature 73.4 °F	partial break; ISO 7391/b.o. ISO 179-1eA
Puncture Energy	60.0 J @Temperature 23.0 °C	44.3 ft-lb @Temperature 73.4 °F	ISO 6603-2
	65.0 J @Temperature -30.0 °C	47.9 ft-lb @Temperature -22.0 °F	ISO 6603-2
Tensile Creep Modulus, 1 hour	2200 MPa	319000 psi	ISO 899-1
Tensile Creep Modulus, 1000 hours	1900 MPa	276000 psi	ISO 899-1

Electrical Properties	Metric	English	Comments
Volume Resistivity	1.00e+14 ohm-cm	1.00e+14 ohm-cm	IEC 60093
Surface Resistance	1.00e+16 ohm	1.00e+16 ohm	IEC 60093
Dielectric Constant	3.0 @Frequency 1e+6 Hz	3.0 @Frequency 1e+6 Hz	IEC 60250
	3.1 @Frequency 100 Hz	3.1 @Frequency 100 Hz	IEC 60250
Dielectric Strength	34.0 kV/mm @Thickness 1.00 mm	864 kV/in @Thickness 0.0394 in	IEC 60243-1
Dissipation Factor	0.00050 @Frequency 100 Hz	0.00050 @Frequency 100 Hz	IEC 60250
	0.0095 @Frequency 1e+6 Hz	0.0095 @Frequency 1e+6 Hz	IEC 60250
Comparative Tracking Index	125 V	125 V	CTI M; Solution B; IEC 60112
	250 V	250 V	Solution A; IEC 60112

Thermal Properties	Metric	English	Comments
CTE, linear, Parallel to Flow	65.0 µm/m-°C @Temperature 23.0 - 55.0 °C	36.1 µin/in-°F @Temperature 73.4 - 131 °F	ISO 11359-1,-2
CTE, linear, Transverse to Flow	65.0 µm/m-°C @Temperature 23.0 - 55.0 °C	36.1 µin/in-°F @Temperature 73.4 - 131 °F	ISO 11359-1,-2
Thermal Conductivity	0.200 W/m-K	1.39 BTU-in/hr-ft²-°F	cross-flow; ISO 8302
Hot Ball Pressure Test	135 °C	275 °F	IEC 60695-10-2
Deflection Temperature at 0.46 MPa (66 psi)	135 °C	275 °F	ISO 75-1,-2
Deflection Temperature at 1.8 MPa (264 psi)	123 °C	253 °F	ISO 75-1,-2
Vicat Softening Point	143 °C @Load 5.10 kg	289 °F @Load 11.2 lb	50°C/h; ISO 306
	144 °C @Load 5.10 kg	291 °F @Load 11.2 lb	120°C/h; ISO 306
Glass Transition Temp, Tg	144 °C	291 °F	10°C/min; ISO 11357-1,-2
UL RTI, Electrical	125 °C @Thickness 1.50 mm	257 °F @Thickness 0.0591 in	UL 746B
UL RTI, Mechanical with Impact	115 °C @Thickness 1.50 mm	239 °F @Thickness 0.0591 in	UL 746B
UL RTI, Mechanical without Impact	125 °C @Thickness 1.50 mm	257 °F @Thickness 0.0591 in	UL 746B
Flammability, UL94	HB @Thickness 2.50 mm	HB @Thickness 0.0984 in
	V-2 @Thickness 0.750 mm	V-2 @Thickness 0.0295 in
Flash Point	480 °C	896 °F	ASTM D 1929
	550 °C	1020 °F	self ignition; ASTM D 1929
Oxygen Index	28 %	28 %	Method A; ISO 4589-2

Optical Properties	Metric	English	Comments
Refractive Index	1.586	1.586	Procedure A; ISO 489
Abbe Number	30	30
Haze	<= 0.50 % @Thickness 3.00 mm	<= 0.50 % @Thickness 0.118 in	ISO 14782
Transmission, Visible	>= 87 % @Thickness 4.00 mm	>= 87 % @Thickness 0.157 in	ISO 13468-2
	88 % @Thickness 3.00 mm	88 % @Thickness 0.118 in	ISO 13468-2
	89 % @Thickness 1.00 mm	89 % @Thickness 0.0394 in	ISO 13468-2
	89 % @Thickness 2.00 mm	89 % @Thickness 0.0787 in	ISO 13468-2

Processing Properties	Metric	English	Comments
Melt Temperature	290 °C	554 °F	Injection molding; ISO 294
Mold Temperature	80.0 °C	176 °F	Injection molding; ISO 294
Injection Velocity	200 mm/sec	7.87 in/sec	ISO 294

Descriptive Properties
Electrolytic Corrosion	A1		IEC 60426

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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PB09647 / 150779

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