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Covestro Makrolon® LED2245 Polycarbonate
Categories: Polymer; Thermoplastic; Polycarbonate (PC); Polycarbonate, Molded
Material Notes: MVR (300 °C/1.2 kg) 34 cm³/10 min; light guides; optics and lenses; PC with highest transmission; low viscosity; easy release; injection molding - melt temperature 280 - 320 °C

As of 1 September 2015, Bayer MaterialScience was separated from Bayer AG and officially adopted its new name – Covestro.
Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesOriginal ValueComments
Bulk Density 0.660 g/ccpellets; ISO 60
Density 1.19 g/ccISO 1183
Moisture Absorption at Equilibrium 0.12 %ISO 62
Water Absorption at Saturation 0.30 %ISO 62
Linear Mold Shrinkage, Flow 0.0065 cm/cm60x60x2 mm; 500 bar; ISO 294-4
Linear Mold Shrinkage, Transverse 0.0070 cm/cm60x60x2 mm; 500 bar; ISO 294-4
Melt Flow 37 g/10 min
@Load 1.20 kg,
Temperature 300 °C		ISO 1133
 
Mechanical PropertiesOriginal ValueComments
Ball Indentation Hardness 115 MPa² ISO 2039-1
Tensile Strength at Break 60.0 MPa50 mm/min; ISO 527-1/-2
Tensile Strength, Yield 63.0 MPa50 mm/min; ISO 527-1/-2
Elongation at Break >= 50 %Nominal, 50 mm/min; ISO 527-1/-2
 125 %50 mm/min; ISO 527-1/-2
Elongation at Yield 6.0 %50 mm/min; ISO 527-1/-2
Tensile Modulus 2350 MPa1 mm/min; ISO 527-1/-2
Flexural Strength 97.0 MPa2 mm/min; ISO 178
Flexural Yield Strength 73.0 MPa
@Strain 3.5 %		2 mm/min; ISO 178
Flexural Modulus 2.35 GPa2 mm/min; ISO 178
Flexural Strain at Yield 7.1 %2 mm/min; ISO 178
Izod Impact, Notched (ISO) 1.20 kJ/m²
@Thickness 3.00 mm,
Temperature -30.0 °C		complete break; ISO 7391/b.o. ISO 180-A
 55.0 kJ/m²
@Thickness 3.00 mm,
Temperature 23.0 °C		partial break; ISO 7391/b.o. ISO 180-A
Charpy Impact Unnotched NBISO 179/1eU
 NB
@Temperature -30.0 °C		ISO 179/1eU
 NB
@Temperature -60.0 °C		ISO 179/1eU
Charpy Impact, Notched 1.20 J/cm²
@Thickness 3.00 mm,
Temperature -30.0 °C		complete break; ISO 7391/b.o. ISO 179-1eA
 6.00 J/cm²
@Thickness 3.00 mm,
Temperature 23.0 °C		partial break; ISO 7391/b.o. ISO 179-1eA
Impact 4900Puncture - maximum force (N); ISO 6603-2
 5900
@Temperature -30.0 °C		Puncture - maximum force (N); ISO 6603-2
Puncture Energy 55.0 JISO 6603-2
 60.0 J
@Temperature -30.0 °C		ISO 6603-2
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 1.00e+14 ohm-cmIEC 60093
Surface Resistance 1.00e+16 ohmIEC 60093
Dielectric Constant 3.0
@Frequency 1e+6 Hz		IEC 60250
 3.1
@Frequency 100 Hz		IEC 60250
Dielectric Strength 34.0 kV/mm1 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 VCIT M; Solution B; IEC 60112
 250 VSolution A; IEC 60112
 
Thermal PropertiesOriginal ValueComments
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-Kcross-flow; ISO 8302
Hot Ball Pressure Test 136 °CIEC 60695-10-2
Deflection Temperature at 0.46 MPa (66 psi) 138 °CISO 75-1/-2
Deflection Temperature at 1.8 MPa (264 psi) 125 °CISO 75-1/-2
Vicat Softening Point 145 °C50°C/h 50N; ISO 306
 146 °C120°C/h 50N; ISO 306
Glass Transition Temp, Tg 145 °CISO 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
 V-2
@Thickness 2.90 mm		IEC 60695-11-10
Flash Point 480 °Cignition; ASTM D1929
 550 °Cself ignition; ASTM D1929
Oxygen Index 28 %Method A; ISO 4589-1/-2
Glow Wire Ignition Temperature 875 °C
@Thickness 0.750 mm		IEC 60695-2-13
 875 °C
@Thickness 1.50 mm		IEC 60695-2-13
 900 °C
@Thickness 3.00 mm		IEC 60695-2-13
Glow Wire Flammability Index 850 °C
@Thickness 1.00 mm		IEC 60695-2-12
 875 °C
@Thickness 1.50 mm		IEC 60695-2-12
 930 °C
@Thickness 3.00 mm		IEC 60695-2-12
 
Optical PropertiesOriginal ValueComments
Refractive Index 1.584ISO 489
Haze <= 0.50 %
@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 PropertiesOriginal ValueComments
Melt Temperature 280 °CInjection Molding; ISO 294
Mold Temperature 80.0 °CInjection Molding; ISO 294
Injection Velocity 200 mm/secISO 294
 
Descriptive Properties
AvailabilityAsia Pacific
 Europe
 India
 Near East/Africa
 North America
 South and Central America
Eff. thermal diffusivity (m²/s)1E-07
FeatureRelease agent
FormPellets
ProcessInjection Molding
UL recognitionUL\l1.5\n
 UL\lh\n

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