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Rulon Bearings

Covestro Makrolon® 6357 Polycarbonate, Flame Retardant Grade
Categories: Polymer; Thermoplastic; Polycarbonate (PC); Polycarbonate, Molded
Material Notes:
  • ISO 7391-PC,MFLR,(,,)-18-9
  • MVR (300 °C/1.2 kg) 14.5 cm3/10 min
  • Chlorine- and bromine-free flame retardant
  • UL 94V-0/3.0 mm
  • Medium viscosity
  • UV stabilized
  • Easy release
  • Injection molding - Melt temperature 280 - 320 °C
  • Available in translucent and opaque colors

As of 1 September 2015, Bayer MaterialScience was separated from Bayer AG and officially adopted its new name – Covestro.
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
Density 1.20 g/cc0.0434 lb/in³ISO 1183
Water Absorption 0.30 %0.30 %Similar to ISO 62
Moisture Absorption at Equilibrium 0.12 %0.12 %Similar to ISO 62
Linear Mold Shrinkage, Flow 0.0070 cm/cm0.0070 in/inISO 294-4,2577
Linear Mold Shrinkage, Transverse 0.0070 cm/cm0.0070 in/inISO 294-4,2577
Melt Flow 17 g/10 min
@Load 1.20 kg,
Temperature 300 °C		17 g/10 min
@Load 2.65 lb,
Temperature 572 °F		estimated from MVR using room temperature density; ISO 1133
 
Mechanical PropertiesMetricEnglishComments
Tensile Strength, Yield 67.0 MPa9720 psiISO 527-1/-2
Elongation at Break >= 50 %>= 50 %Nominal; ISO 527-1/-2
Elongation at Yield 6.1 %6.1 %ISO 527-1/-2
Tensile Modulus 2.45 GPa355 ksiISO 527-1/-2
Charpy Impact Unnotched NBNBISO 179/1eU
 NB
@Temperature -30.0 °C		NB
@Temperature -22.0 °F		ISO 179/1eU
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity >= 1.00e+13 ohm-cm>= 1.00e+13 ohm-cmIEC 60093
Surface Resistance >= 1.00e+15 ohm>= 1.00e+15 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/mm864 kV/inIEC 60243-1
Dissipation Factor  0.00080
@Frequency 100 Hz		0.00080
@Frequency 100 Hz		IEC 60250
 0.0090
@Frequency 1e+6 Hz		0.0090
@Frequency 1e+6 Hz		IEC 60250
Comparative Tracking Index 225 V225 VIEC 60112
 
Thermal PropertiesMetricEnglishComments
CTE, linear, Parallel to Flow 65.0 µm/m-°C36.1 µin/in-°FISO 11359-1/-2
CTE, linear, Transverse to Flow 65.0 µm/m-°C36.1 µin/in-°FISO 11359-1/-2
Deflection Temperature at 0.46 MPa (66 psi) 135 °C275 °FISO 75-1/-2
Deflection Temperature at 1.8 MPa (264 psi) 123 °C253 °FISO 75-1/-2
Vicat Softening Point 142 °C288 °F50°C/h 50N; ISO 306
Glass Transition Temp, Tg 144 °C291 °FISO 11357-1/-2
Flammability, UL94  V-2
@Thickness 1.50 mm		V-2
@Thickness 0.0591 in		IEC 60695-11-10
 V-0
@Thickness 3.00 mm		V-0
@Thickness 0.118 in		IEC 60695-11-10
Oxygen Index 35 %35 %ISO 4589-1/-2
 
Processing PropertiesMetricEnglishComments
Melt Temperature 290 °C554 °FInjection Molding; ISO 294
 280 - 320 °C536 - 608 °F
Mold Temperature 80.0 °C176 °FInjection Molding; ISO 10724
 80.0 - 120 °C176 - 248 °F
 80.0 - 120 °C176 - 248 °F
Injection Velocity 200 mm/sec7.87 in/secISO 294
Drying Temperature 120 °C248 °F
Dry Time 2.00 - 3.00 hour2.00 - 3.00 hourDry air dryer
 2.00 - 4.00 hour2.00 - 4.00 hourFresh air dryer (high speed dryer)
 4.00 - 12.0 hour4.00 - 12.0 hourCirculating air drying oven (50 % fresh air)
Moisture Content <= 0.020 %<= 0.020 %
 
Descriptive Properties
AvailabilityAsia Pacific
 Europe
 India
 Near East/Africa
 South and Central America
FeatureLight stabilized or stable to light
 Release agent
 U.V. stabilized or stable to weather
FormPellets
ProcessInjection Molding
UL recognitionUL\l1.5\n
 UL\lh\n

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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