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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
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 PropertiesMetricEnglishComments
Bulk Density 0.660 g/cc
@Temperature 23.0 °C
0.0238 lb/in³
@Temperature 73.4 °F
pellets; ISO 60
Density 1.19 g/cc0.0430 lb/in³ISO 1183-1
Moisture Absorption at Equilibrium 0.12 %
@Temperature 23.0 °C
0.12 %
@Temperature 73.4 °F
ISO 62
Water Absorption at Saturation 0.30 %
@Temperature 23.0 °C
0.30 %
@Temperature 73.4 °F
ISO 62
Linear Mold Shrinkage 0.0070 cm/cm
@Pressure 50.0 MPa
0.0070 in/in
@Pressure 7250 psi
60x60x2 mm; ISO 294-4
Linear Mold Shrinkage, Flow 0.0065 cm/cm
@Pressure 50.0 MPa
0.0065 in/in
@Pressure 7250 psi
60x60x2 mm; ISO 294-4
Melt Flow 40.46 g/10 min
@Load 1.20 kg,
Temperature 300 °C
40.46 g/10 min
@Load 2.65 lb,
Temperature 572 °F
ISO 1133
 
Mechanical PropertiesMetricEnglishComments
Ball Indentation Hardness 115 MPa
@Temperature 23.0 °C
16700 psi
@Temperature 73.4 °F
ISO 2039-1
Tensile Strength at Break 60.0 MPa8700 psi50mm/min; ISO 527-1,-2
Tensile Strength, Yield 63.0 MPa9140 psi50mm/min; ISO 527-1,-2
Elongation at Break >= 50 %>= 50 %50mm/min, complete break; ISO 524-1,-2
 120 %120 %50mm/min, complete break; ISO 524-1,-2
Elongation at Yield 6.0 %6.0 %50mm/min; ISO 527-1,-2
Tensile Modulus 2.35 GPa
@Temperature 23.0 °C
341 ksi
@Temperature 73.4 °F
1mm/min, complete break; ISO 527-1,-2
Flexural Strength 97.0 MPa14100 psi2mm/min; ISO 178
 73.0 MPa
@Strain 3.5 %
10600 psi
@Strain 3.5 %
2mm/min; ISO 178
Flexural Modulus 2.35 GPa
@Temperature 23.0 °C
341 ksi
@Temperature 73.4 °F
2mm/min; ISO 178
Flexural Strain at Break 7.1 %7.1 %2 mm/min; ISO 178
Izod Impact, Notched (ISO)  12.0 kJ/m²
@Thickness 3.20 mm,
Temperature -30.0 °C
5.71 ft-lb/in²
@Thickness 0.126 in,
Temperature -22.0 °F
Complete Break; b.o. ISO 180-A
 65.0 kJ/m²
@Thickness 3.20 mm,
Temperature 23.0 °C
30.9 ft-lb/in²
@Thickness 0.126 in,
Temperature 73.4 °F
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  1.20 J/cm²
@Thickness 3.00 mm,
Temperature -30.0 °C
5.71 ft-lb/in²
@Thickness 0.118 in,
Temperature -22.0 °F
ISO 7391/b.o.ISO 179-1eA
 5.50 J/cm²
@Thickness 3.00 mm,
Temperature 23.0 °C
26.2 ft-lb/in²
@Thickness 0.118 in,
Temperature 73.4 °F
ISO 7391/b.o.ISO 179-1eA
Puncture Energy  55.0 J
@Temperature 23.0 °C
40.6 ft-lb
@Temperature 73.4 °F
complete break; ISO 6603-2
 60.0 J
@Temperature -30.0 °C
44.3 ft-lb
@Temperature -22.0 °F
complete break; ISO 6603-2
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity 1.00e+16 ohm-cm1.00e+16 ohm-cmIEC 60093
Surface Resistance 1.00e+16 ohm1.00e+16 ohmIEC 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
 0.0090
@Frequency 1e+6 Hz
0.0090
@Frequency 1e+6 Hz
IEC 60250
Comparative Tracking Index 125 V125 Vsolution B; IEC 60112
 250 V250 Vsolution A; IEC 60112
 
Thermal PropertiesMetricEnglishComments
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-K1.39 BTU-in/hr-ft²-°Fcross flow; ISO 8302
Deflection Temperature at 0.46 MPa (66 psi) 136 °C277 °Fcomplete break; ISO 75-1,-2
Deflection Temperature at 1.8 MPa (264 psi) 123 °C253 °Fcomplete break; ISO 75-1,-2
Vicat Softening Point  143 °C
@Load 5.10 kg
289 °F
@Load 11.2 lb
@ 50°C/h; ISO 306
 145 °C
@Load 5.10 kg
293 °F
@Load 11.2 lb
@ 120°C/h; ISO 306
Glass Transition Temp, Tg 144 °C291 °F10°C/min; ISO 11357-1,-2
 
Optical PropertiesMetricEnglishComments
Refractive Index 1.5841.584ISO 489 procedure A
Haze <= 0.50 %
@Thickness 3.00 mm
<= 0.50 %
@Thickness 0.118 in
for transparent material; ISO 14782
Transmission, Visible  89 %
@Thickness 4.00 mm
89 %
@Thickness 0.157 in
Luminous; ISO 13468-2
 89 %
@Thickness 3.00 mm
89 %
@Thickness 0.118 in
Luminous; ISO 13468-2
 90 %
@Thickness 2.00 mm
90 %
@Thickness 0.0787 in
Luminous; ISO 13468-2
 90 %
@Thickness 1.00 mm
90 %
@Thickness 0.0394 in
Luminous; ISO 13468-2
 
Processing PropertiesMetricEnglishComments
Melt Temperature 280 °C536 °Finjection molding; ISO 294
Mold Temperature 80.0 °C176 °Finjection molding; ISO 294
Injection Velocity 200 mm/sec7.87 in/secinjection molding; ISO 294
 
Descriptive Properties
Puncture Maximum Force (N)4900ISO 6603-2, at 23°C, complete break
 5900ISO 6603-2, at -30°C, complete break

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