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Covestro Makrolon® T7855 Polycarbonate, Impact Grade

Category Polymer , Thermoplastic , Polycarbonate (PC) , Polycarbonate, Impact Modified
Manufacturer Covestro
Trade Name Makrolon®
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Covestro Makrolon® T7855 Polycarbonate, Impact Grade.pdf
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Material Notes:
ISO 7391-PC,MPR,(,,)-18-9Global gradeMVR (300 °C/1.2 kg) 12 cm3/10 minImpact modifiedMedium viscosityEasy releaseInjection molding - Melt temperature 280 - 320 °CAvailable in opaque colors onlyPreprocessingMax. Water content
Physical Properties Metric English Comments
Density 1.19 g/cc
0.0430 lb/in³
ISO 1183
1.02 g/cc

@Temperature 290 °C
0.0368 lb/in³

@Temperature 554 °F
Melt
Water Absorption 0.40 %
0.40 %
Similar to ISO 62
Moisture Absorption at Equilibrium 0.12 %
0.12 %
Similar to ISO 62
Melt Flow 12 g/10 min

@Load 1.20 kg,
Temperature 300 °C
12 g/10 min

@Load 2.65 lb,
Temperature 572 °F
ISO 1133
Mechanical Properties Metric English Comments
Tensile Strength, Yield 62.0 MPa
8990 psi
ISO 527-1/-2
Elongation at Break >= 50 %
>= 50 %
Nominal; ISO 527-1/-2
Elongation at Yield 5.8 %
5.8 %
ISO 527-1/-2
Tensile Modulus 2.25 GPa
326 ksi
ISO 527-1/-2
Charpy Impact Unnotched NB
NB
ISO 179/1eU
NB

@Temperature -30.0 °C
NB

@Temperature -22.0 °F
ISO 179/1eU
Impact 5100
5100
Puncture - maximum force (N); ISO 6603-2
6000

@Temperature -30.0 °C
6000

@Temperature -22.0 °F
Puncture - maximum force (N); ISO 6603-2
Puncture Energy 55.0 J
40.6 ft-lb
ISO 6603-2
60.0 J

@Temperature -30.0 °C
44.3 ft-lb

@Temperature -22.0 °F
ISO 6603-2
Thermal Properties Metric English Comments
CTE, linear, Parallel to Flow 70.0 µm/m-°C
38.9 µin/in-°F
ISO 11359-1/-2
CTE, linear, Transverse to Flow 70.0 µm/m-°C
38.9 µin/in-°F
ISO 11359-1/-2
Specific Heat Capacity 1.70 J/g-°C
0.406 BTU/lb-°F
Melt
Thermal Conductivity 0.173 W/m-K
1.20 BTU-in/hr-ft²-°F
Melt
Deflection Temperature at 0.46 MPa (66 psi) 136 °C
277 °F
ISO 75-1/-2
Deflection Temperature at 1.8 MPa (264 psi) 123 °C
253 °F
ISO 75-1/-2
Vicat Softening Point 144 °C
291 °F
50°C/h 50N; ISO 306
Flammability, UL94 HB

@Thickness 1.50 mm
HB

@Thickness 0.0591 in
IEC 60695-11-10
Oxygen Index 30 %
30 %
ISO 4589-1/-2
Electrical Properties Metric English Comments
Volume Resistivity >= 1.00e+13 ohm-cm
>= 1.00e+13 ohm-cm
IEC 60093
Surface Resistance >= 1.00e+15 ohm
>= 1.00e+15 ohm
IEC 60093
Dielectric Constant 3.1

@Frequency 1.00e+6 Hz
3.1

@Frequency 1.00e+6 Hz
IEC 60250
3.2

@Frequency 100 Hz
3.2

@Frequency 100 Hz
IEC 60250
Dielectric Strength 34.0 kV/mm
864 kV/in
IEC 60243-1
Dissipation Factor 0.0014

@Frequency 100 Hz
0.0014

@Frequency 100 Hz
IEC 60250
0.011

@Frequency 1.00e+6 Hz
0.011

@Frequency 1.00e+6 Hz
IEC 60250
Comparative Tracking Index 200 V
200 V
IEC 60112
Processing Properties Metric English Comments
Melt Temperature 290 °C
554 °F
Injection Molding; ISO 294
280 - 320 °C
536 - 608 °F
Mold Temperature 80.0 °C
176 °F
Injection Molding; ISO 10724
80.0 - 120 °C
176 - 248 °F
Ejection Temperature 130 °C
266 °F
Injection Velocity 200 mm/sec
7.87 in/sec
ISO 294
Descriptive Properties Value Comments
Availability Asia Pacific
Europe
India
Near East/Africa
North America
South and Central America
Eff. thermal diffusivity (m²/s) 1E-07
Feature Release agent
Form Pellets
Process Injection Molding
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