Covestro Makrolon® LTG2623 Polycarbonate

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Covestro Makrolon® LTG2623 Polycarbonate
Categories:	Polymer; Thermoplastic; Polycarbonate (PC); Polycarbonate, Molded
Material Notes:	MVR (300 °C/1.2 kg) 13 cm³/10 min; lighting; High Intensity Discharge (HID) lenses; medium viscosity; UV stabilized; injection molding - melt temperature 280 - 320 °C; available in transparent colors 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
Moisture Absorption at Equilibrium	0.12 %	60x60x2 mm; 500 bar; ISO 62
Water Absorption at Saturation	0.30 %	ISO 62
Water Vapor Transmission	15.0 g/m²/day @Thickness 0.100 mm, Temperature 23.0 °C	85% RH; ISO 15106-1
Linear Mold Shrinkage	0.0060 - 0.0080 cm/cm	parallel/normal; b.o. ISO 2577
Linear Mold Shrinkage, Flow	0.0065 cm/cm	60x60x2 mm; 500 bar; ISO 294-4
Linear Mold Shrinkage, Transverse	0.0070 cm/cm	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
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
	120 %	50 [mm/min]; 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	2.35 GPa	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 3.00 mm, Temperature -30.0 °C	complete break; ISO 7391/b.o. ISO 180-A
	70.0 kJ/m² @Thickness 3.00 mm, Temperature 23.0 °C	partial break; ISO 7391/b.o. ISO 180-A
Charpy Impact Unnotched	NB	ISO 179/1eU
	NB @Temperature -30.0 °C	ISO 179/1eU
	NB @Temperature -60.0 °C	ISO 179/1eU
Charpy Impact, Notched	1.60 J/cm² @Thickness 3.00 mm, Temperature -30.0 °C	complete break; ISO 7391/b.o. ISO 179-1eA
	7.00 J/cm² @Thickness 3.00 mm, Temperature 23.0 °C	partial break; ISO 7391/b.o. ISO 179-1eA
Impact	5400	Puncture - maximum force (N); ISO 6603-2
	6300 @Temperature -30.0 °C	Puncture - maximum force (N); ISO 6603-2
Puncture Energy	60.0 J	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	1 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	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	50°C/h 50N; ISO 306
	146 °C	120°C/h 50N; ISO 306
Glass Transition Temp, Tg	147 °C	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	V-2 @Thickness 1.50 mm	IEC 60695-11-10
Flash Point	480 °C	ignition; ASTM D1929
	550 °C	self ignition; ASTM D1929
Oxygen Index	27 %	Method A; ISO 4589-1/-2

Optical Properties	Original Value	Comments
Refractive Index	1.587	ISO 489
Haze	<= 0.80 % @Thickness 3.00 mm	ISO 14782
Transmission, Visible	87 % @Thickness 4.00 mm	ISO 13468-2
	88 % @Thickness 3.00 mm	ISO 13468-2
	89 % @Thickness 1.00 mm	ISO 13468-2
	89 % @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

Descriptive Properties
Availability	North America
Eff. thermal diffusivity (m²/s)	1E-07
Feature	Light stabilized or stable to light
	U.V. stabilized or stable to weather
Form	Pellets
Process	Injection Molding
UL recognition	UL\l1.5\n
	UL\lh\n

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PB09964 / 92804

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