Covestro Makrolon® LED2643 Polycarbonate

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Covestro Makrolon® LED2643 Polycarbonate
Categories:	Polymer; Thermoplastic; Polycarbonate (PC); Polycarbonate, Molded; Polycarbonate, UV Stabilized
Material Notes:	MVR (300 °C/1.2 kg) 13 cm³/10 min; LED Lighting, optics and lenses; PC with highest transmission; medium viscosity; UV stabilized; injection molding - melt temperature 280 - 320 °C; available in color code 551053 only 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	Original Value	Comments

Bulk Density	0.660 g/cc	pellets; ISO 60
Density	1.20 g/cc	ISO 1183-1
Moisture Absorption at Equilibrium	0.12 %	ISO 62, 50% RH
Water Absorption at Saturation	0.30 %	ISO 62
Oxygen Transmission	67.0 cc-mm/m²-24hr-atm @Thickness 0.100 mm	670 cc/m²-24hr-bar; film; b.o. ISO 2556
Nitrogen Transmission	12.0 cc-mm/m²-24hr-atm @Thickness 0.100 mm	120 cc/m²-24hr-bar; film; b.o. ISO 2556
Carbon Dioxide Transmission	380 cc-mm/m²-24hr-atm @Thickness 0.100 mm	3800 cc/m²-24hr-bar; film; b.o. ISO 2556
Linear Mold Shrinkage	0.0060 - 0.0080 cm/cm	parallel/normal; b.o. ISO 2577
Linear Mold Shrinkage, Flow	0.0070 cm/cm @Thickness 2.00 mm	60x60x2 mm; 500 bar; ISO 294-4
Linear Mold Shrinkage, Transverse	0.0075 cm/cm @Thickness 2.00 mm	60x60x2 mm; 500 bar; ISO 294-4
Melt Flow	13 g/10 min @Load 1.20 kg, Temperature 300 °C	ISO 1133

Mechanical Properties	Original Value	Comments
Puncture Resistance	5400 N @Temperature 23.0 °C	ISO 6603-2
	6300 N @Temperature -30.0 °C	ISO 6603-2
Ball Indentation Hardness	115 MPa	ISO 2039-1
Tensile Strength at Break	70.0 MPa	50 mm/min; ISO 527-1,-2
Tensile Strength, Yield	65.0 MPa	50 mm/min; ISO 527-1,-2
Elongation at Break	>= 50 %	Nominal, 50 mm/min; ISO 527-1,-2
	130 %	50 mm/min; b.o. ISO 527-1,-2
Elongation at Yield	6.3 %	50 mm/min; ISO 527-1,-2
Tensile Modulus	2350 MPa	1 mm/min; ISO 527-1,-2
Flexural Strength	96.0 MPa	2 mm/min; ISO 178
Flexural Yield Strength	72.0 MPa @Strain 3.5 %	2 mm/min; ISO 178
Flexural Modulus	2350 MPa	2 mm/min; ISO 178
Flexural Strain at Yield	7.0 %	2 mm/min; ISO 178
Izod Impact, Notched (ISO)	15.0 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	partial break; 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	14.0 kJ/m² @Thickness 3.00 mm, Temperature -30.0 °C	complete break; ISO 7391/b.o. ISO 179-1eA
	70.0 kJ/m² @Thickness 3.00 mm, Temperature 23.0 °C	partial break; ISO 7391/b.o. ISO 179-1eA
Puncture Energy	60.0 J @Temperature 23.0 °C	ISO 6603-2
	65.0 J @Temperature -30.0 °C	ISO 6603-2

Electrical Properties	Original Value	Comments
Volume Resistivity	1.00e+14 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
	0.0095 @Frequency 1e+6 Hz	IEC 60250
Comparative Tracking Index	125 V	CTI M; 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
Hot Ball Pressure Test	138 °C	IEC 60695-10-2
Deflection Temperature at 0.46 MPa (66 psi)	138 °C	ISO 75-1,-2
Deflection Temperature at 1.8 MPa (264 psi)	126 °C	ISO 75-1,-2
Vicat Softening Point	145 °C @Load 5.10 kg	50°C/h; ISO 306
	146 °C @Load 5.10 kg	120°C/h; ISO 306
Glass Transition Temp, Tg	146 °C	10°C/min; ISO 11357-1,-2
UL RTI, Electrical	125 °C @Thickness 1.50 mm	UL 746B
UL RTI, Mechanical with Impact	115 °C @Thickness 1.50 mm	UL 746B
UL RTI, Mechanical without Impact	125 °C @Thickness 1.50 mm	UL 746B
Flammability, UL94	HB @Thickness 2.50 mm
	V-2 @Thickness 0.750 mm
Flash Point	480 °C	ASTM D 1929
	550 °C	self ignition; ASTM D 1929
Oxygen Index	28 %	Method A; ISO 4589-2
Glow Wire Ignition Temperature	875 °C @Thickness 1.50 mm	IEC 60695-2-13
	875 °C @Thickness 2.20 mm	IEC 60695-2-13
	875 °C @Thickness 3.00 mm	IEC 60695-2-13
Glow Wire Flammability Index	850 °C @Thickness 1.50 mm	IEC 60695-2-12
	850 °C @Thickness 2.20 mm	IEC 60695-2-12
	960 °C @Thickness 3.00 mm	IEC 60695-2-12

Optical Properties	Original Value	Comments
Refractive Index	1.586	Procedure A; ISO 489
Haze	<= 1.0 % @Thickness 3.00 mm	ISO 14782
Transmission, Visible	>= 89 % @Thickness 3.00 mm	ISO 13468-2
	>= 89 % @Thickness 4.00 mm	ISO 13468-2
	90 % @Thickness 1.00 mm	ISO 13468-2
	90 % @Thickness 2.00 mm	ISO 13468-2

Processing Properties	Original Value	Comments
Melt Temperature	290 °C	Injection molding; ISO 294
Mold Temperature	80.0 °C	Injection molding; ISO 294
Injection Velocity	200 mm/sec	ISO 294

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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PB09646 / 150778

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