Makrolon® AL2447

About
MVR (300 °C/1.2 kg) 19 cm³/10 min; Automotive lighting; low viscosity; UV stabilized; easy release; injection molding – melt temperature 280 – 320 °C; available in clear transparent colors and in various signal colors; headlamp lenses for automotive forward lighting&&

Product Description
SupplierCovestro
GenericPolycarbonate
Material StatusCommercial: Active
FeaturesHB,Weather resistance is good,Good stripping performance,Low Viscosity,V-2
AvailabilitysLatin America,Asia Pacific,Europe,Africa & Middle East ,North America
Process MethodsInjection Molding

Technical Data
PHYSICALNominal valueUnitTest method
Density1.20g/cm³ISO 1183
Apparent density0.66g/cm³ISO 60
Melt Flow Rate
300℃,1.20kg20g/10minISO 1133
Melt Volume Rate
300℃,1.2 kg19.0cm³/10minISO 1133
Shrinkage rate 
TD0.50 to 0.70%ISO 2577
MD0.50 to 0.70%ISO 2577
TD:2.0 mm0.70%ISO 294-4
MD:2.0 mm0.65%ISO 294-4
Water absorption rate ISO 62
Saturation, 23 ℃0.30%ISO 62
Equilibrium, 23 ℃, 50% RH0.12%ISO 62

filmNominal valueUnitTest method
Water vapor transmittance
23℃,85% RH,100 µm15g/m²/24 hrISO 15106-1
Gas permeation ISO 2556
Carbon dioxide: 23 ℃, 25.4 µ m18900cm³/m²/bar/24 hrISO 2556
Carbon dioxide: 23 ℃, 100.0 µ m4800cm³/m²/bar/24 hrISO 2556
Nitrogen: 23 ℃, 25.4 µ m630cm³/m²/bar/24 hrISO 2556
Nitrogen: 23 ℃, 100.0 µ m160cm³/m²/bar/24 hrISO 2556
Oxygen: 23 ℃, 25.4 µ m3150cm³/m²/bar/24 hrISO 2556
Oxygen: 23 ℃, 100.0 µ m800cm³/m²/bar/24 hrISO 2556

IMPACTNominal valueUnitTest method
Charpy Notched Impact Strength ISO 7391
-30 ℃, completely fractured14kJ/m²ISO 7391
Charpy Unnotch Impact strength ISO 179/1eU
-60℃无断裂 ISO 179/1eU
-30℃无断裂 ISO 179/1eU
23℃无断裂 ISO 179/1eU
Impact strength of cantilever beam notch ISO 7391
-30 ℃, completely fractured15kJ/m²ISO 7391
23 ℃, localized fracture65kJ/m²ISO 7391
Multi axial instrumented impact energy ISO 6603-2
-30℃65.0JISO 6603-2
23℃55.0JISO 6603-2
Multi axial instrumented peak impact force ISO 6603-2
-30℃6000NISO 6603-2
23℃5100NISO 6603-2

THERMALNominal valueUnitTest method
Hot deformation temperature 
0.45 MPa, unannealed138ISO 75-2/B
1.8 MPa, unannealed125ISO 75-2/A
Glass transition temperature145ISO 11357-2
Vicat Softening Temp 
B50144ISO 306
B120145ISO 306/B120
Ball pressure test
135℃通过 IEC 60695-10-2
Linear coefficient of thermal expansion ISO 11359-2
MD:23~55℃6.5E-51/℃ISO 11359-2
TD:23~55℃6.5E-51/℃ISO 11359-2
Thermal conductivity coefficient
23℃0.20W/m/KISO 8302
Relative temperature index
Electrical performance, 1.50 mm125UL 746
Impact mechanical performance, 1.50 mm115UL 746
1.50 mm125UL 746

Electrical performanceNominal valueUnitTest method
Surface resistivity1.0E+16ohmsIEC 60093
Volume resistivity
23℃1.0E+16ohms·cmIEC 60093
Dielectric strength
23 ℃,1 mm34kV/mmIEC 60243-1
Relative permittivity IEC 60250
23℃,100 Hz3.10 IEC 60250
23℃,1 MHz3.00 IEC 60250
Dissipation factor IEC 60250
23℃,100 Hz5.0E-4 IEC 60250
23℃,1 MHz9.0E-3 IEC 60250
Compared to the leakage tracing index IEC 60112
Solution A250VIEC 60112
Solution B125VIEC 60112

FLAME CHARACTERISTICSNominal valueUnitTest method
Flame retardant level UL 94
2.70 mmHB UL 94
0.75 mmV-2 UL 94
Extreme oxygen index28%ISO 4589-2
Flash Ignition Temperature480ASTM D1929
Autoignition temperature550ASTM D1929

optical performanceNominal valueUnitTest method
Refractive index1.586 ISO 489
Transmittance ISO 13468-2
1000 µm89.0%ISO 13468-2
2000 µm89.0%ISO 13468-2
3000 µm88.0%ISO 13468-2
4000 µm> 87.0%ISO 13468-2
Haze
3000 µm< 0.50%ISO 14782

Supplementary informationNominal valueUnitTest method
Electrolytic corrosion
23℃A1 IEC 60426
ISO ShortnameISO 7391-PC,MLR,(,, 

MECHANICALNominal valueUnitTest method
Ball hardness115MPaISO 2039-1
Tensile modulus
23℃2400MPaISO 527-1-2
tensile strength 
Yield, 23 ℃66.0MPaISO 527-2/50
Fracture, 23 ℃70.0MPaISO 527-2/5
Fracture, 23 ℃65.0MPaISO 527-2/50
Tensile strain 
Yield, 23 ℃6.0%ISO 527-2/50
Fracture, 23 ℃130%ISO 527-2/5
Fracture, 23 ℃120%ISO 527-2/50
Nominal tensile fracture strain
23℃> 50%ISO 527-2/50
Tensile creep modulus ISO 899-1
1 hr2200MPaISO 899-1
1000 hr1900MPaISO 899-1
Bending modulus
23℃2350MPaISO 178
bending strength ISO 178
23℃98.0MPaISO 178
3.50% strain, 23 ℃74.0MPaISO 178
Bending strain7.0%ISO 178

Process Conditions
InjectionNominal valueUnitTest method
Melt Temperature280 – 320
Standard melt temperature300
Temperature of the feeding section of the material pipe250 – 260
Temperature of the middle section of the material pipe270 – 290
Temperature of the front section of the material pipe280 – 290
Nozzle temperature290 – 300
Mold temperature80 – 120
Maintaining pressure (actual maximum injection pressure)50 – 75%
Melt back pressure50 – 150bar
Screw speed0.05 – 0.2m/s
Injection volume30 – 70%
Drying temperature under dry air120
Drying time in dry air2 – 3h
Maximum moisture content≤0. 02%
Depth of exhaust groove0. 025 – 0. 075mm

Notes
1. Typical properties: these are not to be construed as specifications.
2. Pellets
3. 60x60x2 mm, 500 bar
4. 0.079 in/min
5. 2 mm/min
6. Based on ISO 179-1eA, 3 mm
7. Based on ISO 180-A, 3 mm
8. 10°C/min
9. Cross-flow
10. Procedure A
11. Method A
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