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Covestro Makrolon® 6255 Polycarbonate, Flame Retardant, High Productivity, Mold Release

Category Polymer , Thermoplastic , Polycarbonate (PC) , Polycarbonate, Unreinforced, Flame Retardant
Manufacturer Covestro
Trade Name Makrolon®
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Covestro Makrolon® 6255 Polycarbonate, Flame Retardant, High Productivity, Mold Release.pdf
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Material Notes:
Information provided by Bayer Corporation, Plastics DivisionAs 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
ASTM D792
Water Absorption 0.15 %
0.15 %
24 hour immersion; ASTM D570
Water Absorption at Saturation 0.35 %
0.35 %
Equilibrium Immersion; ASTM D570
Linear Mold Shrinkage 0.0050 - 0.0070 cm/cm
0.0050 - 0.0070 in/in
ASTM D955
Melt Flow 20 g/10 min

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

@Load 2.65 lb,
Temperature 572 °F
ASTM D1238
Mechanical Properties Metric English Comments
Hardness, Rockwell M 75
75
ASTM D785
Hardness, Rockwell R 118
118
ASTM D785
Tensile Strength, Ultimate 69.0 MPa
10000 psi
ASTM D638
Tensile Strength, Yield 63.0 MPa
9140 psi
ASTM D638
Elongation at Break 110 %
110 %
ASTM D638
Elongation at Yield 6.0 %
6.0 %
ASTM D638
Tensile Modulus 2.40 GPa
348 ksi
ASTM D638
Flexural Yield Strength 83.0 MPa
12000 psi
at 5% strain; ASTM D790
Flexural Modulus 2.28 GPa
331 ksi
ASTM D790
Izod Impact, Notched 6.90 J/cm

@Thickness 3.17 mm
12.9 ft-lb/in

@Thickness 0.125 in
ASTM D256
Thermal Properties Metric English Comments
CTE, linear 70.0 µm/m-°C

@Temperature 20.0 °C
38.9 µin/in-°F

@Temperature 68.0 °F
ASTM D696
Specific Heat Capacity 1.20 J/g-°C
0.287 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) 134 °C
273 °F
Unannealed; ASTM D648
Deflection Temperature at 1.8 MPa (264 psi) 126 °C
259 °F
Unannealed; ASTM D648
Vicat Softening Point 151 °C
304 °F
Rate A; ASTM D1525
UL RTI, Electrical 125 °C

@Thickness 1.50 mm
257 °F

@Thickness 0.0591 in
UL RTI, Mechanical with Impact 115 °C

@Thickness 1.50 mm
239 °F

@Thickness 0.0591 in
UL RTI, Mechanical without Impact 125 °C

@Thickness 1.50 mm
257 °F

@Thickness 0.0591 in
Flammability, UL94 V-2

@Thickness 1.50 mm
V-2

@Thickness 0.0591 in
V-2

@Thickness 1.50 mm
V-2

@Thickness 0.0591 in
Oxygen Index 35 %
35 %
ASTM D2863
Optical Properties Metric English Comments
Transmission, Visible 0.00 %
0.00 %
Opaque only
Electrical Properties Metric English Comments
Electrical Resistivity 1.00e+16 ohm-cm
1.00e+16 ohm-cm
ASTM D257
Surface Resistance 1.00e+15 ohm
1.00e+15 ohm
ASTM D257
Dielectric Constant 2.9

@Frequency 1e+6 Hz
2.9

@Frequency 1e+6 Hz
ASTM D150
3.0

@Frequency 60 Hz
3.0

@Frequency 60 Hz
ASTM D150
Dielectric Strength 30.0 kV/mm

@Thickness 1.60 mm
762 kV/in

@Thickness 0.0630 in
ASTM D149
Dissipation Factor 0.00090

@Frequency 60 Hz
0.00090

@Frequency 60 Hz
ASTM D150
0.010

@Frequency 1e+6 Hz
0.010

@Frequency 1e+6 Hz
ASTM D150
Arc Resistance 115 sec
115 sec
Tungsten Electrodes; ASTM D495
Comparative Tracking Index 175 - 250 V

@Thickness 3.00 mm
175 - 250 V

@Thickness 0.118 in
UL Rating PLC 3 (175-250 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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