Covestro Makrolon® LED 2247 Polycarbonate

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Covestro Makrolon® LED 2247 Polycarbonate
Categories:	Polymer; Thermoplastic; Polycarbonate (PC); Polycarbonate, Molded
Material Notes:	low viscosity; UV stabilized; easy release; LED Lighting, optics and lenses; injection molding Mechanical property data for samples at 50% RH. Information provided by Covestro.
Key Words:	LED2247
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Physical Properties	Original Value	Comments

Bulk Density	0.660 g/cc @Temperature 23.0 °C	pellets; ISO 60
Density	1.19 g/cc	ISO 1183-1
Moisture Absorption at Equilibrium	0.12 % @Temperature 23.0 °C	ISO 62
Water Absorption at Saturation	0.30 % @Temperature 23.0 °C	ISO 62
Linear Mold Shrinkage	0.0070 in/in @Pressure 50.0 MPa	60x60x2 mm; ISO 294-4
Linear Mold Shrinkage, Flow	0.0065 in/in @Pressure 50.0 MPa	60x60x2 mm; ISO 294-4
Melt Flow	40.46 g/10 min @Load 1.20 kg, Temperature 300 °C	ISO 1133

Mechanical Properties	Original Value	Comments
Ball Indentation Hardness	16700 psi @Temperature 23.0 °C	ISO 2039-1
Tensile Strength at Break	60.0 MPa	50mm/min; ISO 527-1,-2
Tensile Strength, Yield	63.0 MPa	50mm/min; ISO 527-1,-2
Elongation at Break	>= 50 %	50mm/min, complete break; ISO 524-1,-2
	120 %	50mm/min, complete break; ISO 524-1,-2
Elongation at Yield	6.0 %	50mm/min; ISO 527-1,-2
Tensile Modulus	2350 MPa @Temperature 23.0 °C	1mm/min, complete break; ISO 527-1,-2
Flexural Strength	97.0 MPa	2mm/min; ISO 178
	73.0 MPa @Strain 3.5 %	2mm/min; ISO 178
Flexural Modulus	2350 MPa @Temperature 23.0 °C	2mm/min; ISO 178
Flexural Strain at Break	7.1 %	2 mm/min; ISO 178
Izod Impact, Notched (ISO)	12.0 kJ/m² @Thickness 3.20 mm, Temperature -30.0 °C	Complete Break; b.o. ISO 180-A
	65.0 kJ/m² @Thickness 3.20 mm, Temperature 23.0 °C	b.o. ISO 180-A
Charpy Impact Unnotched	NB @Temperature 23.0 °C	ISO 179-1eU
	NB @Temperature -30.0 °C	ISO 179-1eU
	NB @Temperature -60.0 °C	ISO 179-1eU
Charpy Impact, Notched	12.0 kJ/m² @Thickness 3.00 mm, Temperature -30.0 °C	ISO 7391/b.o.ISO 179-1eA
	55.0 kJ/m² @Thickness 3.00 mm, Temperature 23.0 °C	ISO 7391/b.o.ISO 179-1eA
Puncture Energy	55.0 J @Temperature 23.0 °C	complete break; ISO 6603-2
	60.0 J @Temperature -30.0 °C	complete break; ISO 6603-2

Electrical Properties	Original Value	Comments
Volume Resistivity	1.00e+16 ohm-cm	IEC 60093
Surface Resistance	1.00e+16 ohm	IEC 60093
Dielectric Constant	3.0 @Frequency 1e+6 Hz	IEC 60250
	3.1 @Frequency 100 Hz	IEC 60250
Dielectric Strength	34.0 kV/mm @Thickness 1.00 mm	IEC 60243-1
Dissipation Factor	0.00050 @Frequency 100 Hz	IEC 60250
	0.0090 @Frequency 1e+6 Hz	IEC 60250
Comparative Tracking Index	125 V	solution B; IEC 60112
	250 V	solution A; IEC 60112

Thermal Properties	Original Value	Comments
CTE, linear, Parallel to Flow	65.0 µm/m-°C @Temperature 23.0 - 55.0 °C	ISO 11359-1,-2
CTE, linear, Transverse to Flow	65.0 µm/m-°C @Temperature 23.0 - 55.0 °C	ISO 11359-1,-2
Thermal Conductivity	0.200 W/m-K	cross flow; ISO 8302
Deflection Temperature at 0.46 MPa (66 psi)	136 °C	complete break; ISO 75-1,-2
Deflection Temperature at 1.8 MPa (264 psi)	123 °C	complete break; ISO 75-1,-2
Vicat Softening Point	143 °C @Load 5.10 kg	@ 50°C/h; ISO 306
	145 °C @Load 5.10 kg	@ 120°C/h; ISO 306
Glass Transition Temp, Tg	144 °C	10°C/min; ISO 11357-1,-2

Optical Properties	Original Value	Comments
Refractive Index	1.584	ISO 489 procedure A
Haze	<= 0.50 % @Thickness 3.00 mm	for transparent material; ISO 14782
Transmission, Visible	89 % @Thickness 3.00 mm	Luminous; ISO 13468-2
	89 % @Thickness 4.00 mm	Luminous; ISO 13468-2
	90 % @Thickness 1.00 mm	Luminous; ISO 13468-2
	90 % @Thickness 2.00 mm	Luminous; ISO 13468-2

Processing Properties	Original Value	Comments
Melt Temperature	280 °C	injection molding; ISO 294
Mold Temperature	80.0 °C	injection molding; ISO 294
Injection Velocity	200 mm/sec	injection molding; ISO 294

Descriptive Properties
Puncture Maximum Force (N)	4900	ISO 6603-2, at 23°C, complete break
	5900	ISO 6603-2, at -30°C, complete break

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 go back to viewing the property data in MatWeb's normal format.

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PB095071 / 200141

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