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Covestro Makrolon® 6555 Polycarbonate, Injection Grade

Category Polymer , Thermoplastic , Polycarbonate (PC) , Polycarbonate, Unreinforced, Flame Retardant
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® 6555 Polycarbonate, Injection Grade.pdf
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Material Notes:
Medium viscosity, flame retardant injection molding with easy mold release, burning behavior.Information provided by Bayer.As of 1 September 2015, Bayer MaterialScience was separated from Bayer AG and officially adopted its new name – Covestro.
Physical Properties Metric English Comments
Density 1.20 g/cc
0.0434 lb/in³
Water Absorption 0.35 %
0.35 %
Saturation in water
Moisture Absorption at Equilibrium 0.15 %
0.15 %
Equilibrium at 50% RH
Water Absorption at Saturation 0.35 %
0.35 %
Linear Mold Shrinkage 0.0060 - 0.0080 cm/cm
0.0060 - 0.0080 in/in
ASTM D955
Melt Flow 9.5 g/10 min

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

@Load 2.65 lb,
Temperature 572 °F
Mechanical Properties Metric English Comments
Hardness, Rockwell M 70
70
ASTM D785
Tensile Strength, Ultimate 69.0 MPa
10000 psi
ASTM D638
Tensile Strength, Yield 63.0 MPa
9140 psi
Elongation at Break 110 %
110 %
ASTM D638
Elongation at Yield 6.0 %
6.0 %
Tensile Modulus 2.40 GPa
348 ksi
Flexural Yield Strength 91.0 MPa
13200 psi
at 5% strain; ASTM D790
Flexural Modulus 2.30 GPa
334 ksi
ASTM D790
Izod Impact, Notched 8.50 J/cm

@Thickness 3.20 mm
15.9 ft-lb/in

@Thickness 0.126 in
ASTM D256
Charpy Impact Unnotched NB
NB
Tensile Creep Modulus, 1 hour 2200 MPa
319000 psi
Tensile Creep Modulus, 1000 hours 1900 MPa
276000 psi
Thermal Properties Metric English Comments
CTE, linear, Parallel to Flow 70.0 µm/m-°C

@Temperature 20.0 °C
38.9 µin/in-°F

@Temperature 68.0 °F
CTE, linear, Transverse to Flow 70.0 µm/m-°C

@Temperature 20.0 °C
38.9 µin/in-°F

@Temperature 68.0 °F
Specific Heat Capacity 1.17 J/g-°C
0.280 BTU/lb-°F
ASTM D2766
Thermal Conductivity 0.200 W/m-K
1.39 BTU-in/hr-ft²-°F
ASTM C177
Deflection Temperature at 0.46 MPa (66 psi) 136 °C
277 °F
Deflection Temperature at 1.8 MPa (264 psi) 129 °C
264 °F
Vicat Softening Point 145 °C
293 °F
Glass Transition Temp, Tg 148 °C
298 °F
UL RTI, Electrical 125 °C
257 °F
UL RTI, Mechanical with Impact 115 °C
239 °F
UL RTI, Mechanical without Impact 125 °C
257 °F
Flammability, UL94 V-2

@Thickness 1.60 mm
V-2

@Thickness 0.0630 in
V-0

@Thickness 3.00 mm
V-0

@Thickness 0.118 in
Oxygen Index 35 %
35 %
Optical Properties Metric English Comments
Refractive Index 1.586
1.586
Haze 1.2 %

@Thickness 3.20 mm
1.2 %

@Thickness 0.126 in
ASTM D1003
Transmission, Visible 87 %

@Thickness 3.20 mm
87 %

@Thickness 0.126 in
ASTM D1003
Electrical Properties Metric English Comments
Electrical Resistivity >= 1.00e+15 ohm-cm
>= 1.00e+15 ohm-cm
Surface Resistance 1.00e+15 ohm
1.00e+15 ohm
Dielectric Constant 2.9

@Frequency 1e+6 Hz
2.9

@Frequency 1e+6 Hz
3.0

@Frequency 100 Hz
3.0

@Frequency 100 Hz
Dielectric Strength 30.0 kV/mm
762 kV/in
Dissipation Factor 0.0010

@Frequency 100 Hz
0.0010

@Frequency 100 Hz
0.010

@Frequency 1e+6 Hz
0.010

@Frequency 1e+6 Hz
Arc Resistance 115 sec
115 sec
Tungsten Electrodes; ASTM D495
Comparative Tracking Index 200 V
200 V
Hot Wire Ignition, HWI 30 - 60 sec

@Thickness 3.00 mm
30 - 60 sec

@Thickness 0.118 in
UL Rating PLC 2 (30-60 sec)
High Amp Arc Ignition, HAI 30 - 60 arcs

@Thickness 1.50 mm
30 - 60 arcs

@Thickness 0.0591 in
UL Rating PLC 2 (30-60 arcs)
High Voltage Arc-Tracking Rate, HVTR 80.0 - 150 mm/min

@Thickness 1.50 mm
3.15 - 5.91 in/min

@Thickness 0.0591 in
UL Rating PLC 3 (80-150 mm/min.)
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