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Rulon Bearings

Covestro Makrolon® 2858 Polycarbonate, Injection Grade
Categories: Polymer; Thermoplastic; Polycarbonate (PC); Polycarbonate, Unreinforced, Flame Retardant
Material Notes: MVR (300 °C/1.2 kg) 9.0 cm³/10 min; medical devices; suitable for ETO and steam sterilization at 121°C; biocompatible according to many ISO 10993-1 test requirements; medium viscosity; easy release; injection molding - melt temperature 280 - 320 °C; available in transparent and opaque colors

As of 1 September 2015, Bayer MaterialScience was separated from Bayer AG and officially adopted its new name – Covestro.
Key Words: PC
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
Bulk Density 0.660 g/cc0.0238 lb/in³pellets; ISO 60
Density 1.20 g/cc0.0434 lb/in³ISO 1183-1
Moisture Absorption at Equilibrium 0.12 %0.12 %50% RH; ISO 62
Water Absorption at Saturation 0.30 %0.30 %ISO 62
Oxygen Transmission 650 cc-mm/m²-24hr-atm1650 cc-mil/100 in²-24hr-atmcm³/(m²·24 h·bar), 100 µm film; b.o. ISO 2556
Nitrogen Transmission 120 cc-mm/m²-24hr-atm305 cc-mil/100 in²-24hr-atmcm³/(m²·24 h·bar), 100 µm film; b.o. ISO 2556
Carbon Dioxide Transmission 3800 cc-mm/m²-24hr-atm9650 cc-mil/100 in²-24hr-atmcm³/(m²·24 h·bar), 100 µm film; b.o. ISO 2556
Linear Mold Shrinkage 0.0060 - 0.0080 cm/cm0.0060 - 0.0080 in/inparallel/normal; b.o. ISO 2577
Linear Mold Shrinkage, Flow 0.0070 cm/cm0.0070 in/in60x60x2 mm; 500 bar; ISO 294-4
Linear Mold Shrinkage, Transverse 0.0075 cm/cm0.0075 in/in60x60x2 mm; 500 bar; ISO 294-4
Melt Flow 10 g/10 min
@Load 1.20 kg,
Temperature 300 °C		10 g/10 min
@Load 2.65 lb,
Temperature 572 °F		ISO 1133
 
Mechanical PropertiesMetricEnglishComments
Puncture Resistance 5400 N1210 lb (f)23°C; ISO 6603-2
 6300 N1420 lb (f)-30°C; ISO 6603-2
Ball Indentation Hardness 115 MPa16700 psiISO 2039-1
Tensile Strength at Break 70.0 MPa10200 psi50 mm/min; ISO 527-1,-2
Tensile Strength, Yield 66.0 MPa9570 psi50 mm/min; ISO 527-1,-2
Elongation at Break >= 50 %>= 50 %Nominal, 50 mm/min; ISO 527-1,-2
 130 %130 %50 mm/min; ISO 527-1,-2
Elongation at Yield 6.1 %6.1 %50 mm/min; ISO 527-1,-2
 7.1 %7.1 %2 mm/min; ISO 178
Tensile Modulus 2.40 GPa348 ksi1 mm/min; ISO 527-1,-2
Flexural Strength 97.0 MPa14100 psi2 mm/min; ISO 178
Flexural Yield Strength 73.0 MPa10600 psiat 3.5% strain; 2 mm/min; ISO 178
Flexural Modulus 2.40 GPa348 ksi2 mm/min; ISO 178
Izod Impact, Notched (ISO)  15.0 kJ/m²
@Thickness 3.00 mm,
Temperature -30.0 °C		7.14 ft-lb/in²
@Thickness 0.118 in,
Temperature -22.0 °F		complete break; ISO 7391/b.o. ISO 180-A
 70.0 kJ/m²
@Thickness 3.00 mm,
Temperature 23.0 °C		33.3 ft-lb/in²
@Thickness 0.118 in,
Temperature 73.4 °F		partial break; ISO 7391/b.o. ISO 180-A
Charpy Impact Unnotched NBNBISO 179-1eU
 NB
@Temperature -30.0 °C		NB
@Temperature -22.0 °F		ISO 179-1eU
 NB
@Temperature -60.0 °C		NB
@Temperature -76.0 °F		ISO 179-1eU
Charpy Impact, Notched  1.60 J/cm²
@Thickness 3.00 mm,
Temperature -30.0 °C		7.61 ft-lb/in²
@Thickness 0.118 in,
Temperature -22.0 °F		complete break; ISO 7391/b.o. ISO 179-1eA
 7.50 J/cm²
@Thickness 3.00 mm,
Temperature 23.0 °C		35.7 ft-lb/in²
@Thickness 0.118 in,
Temperature 73.4 °F		partial break; ISO 7391/b.o. ISO 179-1eA
Puncture Energy 60.0 J44.3 ft-lb23°C; ISO 6603-2
 65.0 J47.9 ft-lb-30°C; ISO 6603-2
Tensile Creep Modulus, 1 hour 2200 MPa319000 psiISO 899-1
Tensile Creep Modulus, 1000 hours 1900 MPa276000 psiISO 899-1
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity 1.00e+14 ohm-cm1.00e+14 ohm-cmIEC 60093
Surface Resistance 1.00e+16 ohm1.00e+16 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/in1 mm; IEC 60243-1
Dissipation Factor  0.00050
@Frequency 100 Hz		0.00050
@Frequency 100 Hz		IEC 60250
 0.0090
@Frequency 1e+6 Hz		0.0090
@Frequency 1e+6 Hz		IEC 60250
Comparative Tracking Index 250 V250 VSolution A; IEC 60112
 
Thermal PropertiesMetricEnglishComments
CTE, linear, Parallel to Flow 65.0 µm/m-°C
@Temperature 23.0 - 55.0 °C		36.1 µin/in-°F
@Temperature 73.4 - 131 °F		ISO 11359-1,-2
CTE, linear, Transverse to Flow 65.0 µm/m-°C
@Temperature 23.0 - 55.0 °C		36.1 µin/in-°F
@Temperature 73.4 - 131 °F		ISO 11359-1,-2
Specific Heat Capacity 1.17 J/g-°C0.280 BTU/lb-°FASTM D2766
Thermal Conductivity 0.200 W/m-K1.39 BTU-in/hr-ft²-°FISO 8302
Hot Ball Pressure Test 136 °C277 °FIEC 60695-10-2
Deflection Temperature at 0.46 MPa (66 psi) 137 °C279 °FISO 75-1,-2
Deflection Temperature at 1.8 MPa (264 psi) 125 °C257 °FISO 75-1,-2
Vicat Softening Point 145 °C293 °F50 N, 50°C/h; ISO 306
 146 °C295 °F50 N, 120°C/h; ISO 306
Glass Transition Temp, Tg 145 °C293 °FISO 11357-1,-2
Flash Point 480 °C896 °Fignition; ASTM D1929
 550 °C1020 °Fself ignition; ASTM D1929
Oxygen Index 28 %28 %Method A; ISO 4589-2
Glow Wire Ignition Temperature  875 °C
@Thickness 19.0 mm		1610 °F
@Thickness 0.750 in		IEC 60695-2-12
 875 °C
@Thickness 38.1 mm		1610 °F
@Thickness 1.50 in		IEC 60695-2-12
 900 °C
@Thickness 76.2 mm		1650 °F
@Thickness 3.00 in		IEC 60695-2-12
Glow Wire Flammability Index  850 °C
@Thickness 38.1 mm		1560 °F
@Thickness 1.50 in		IEC 60695-2-12
 930 °C
@Thickness 76.2 mm		1710 °F
@Thickness 3.00 in		IEC 60695-2-12
 
Optical PropertiesMetricEnglishComments
Refractive Index 1.5861.586ISO 489
Haze <= 0.80 %
@Thickness 3.00 mm		<= 0.80 %
@Thickness 0.118 in		ISO 14782
Transmission, Visible  87 %
@Thickness 4.00 mm		87 %
@Thickness 0.157 in		ISO 13468-2
 88 %
@Thickness 3.00 mm		88 %
@Thickness 0.118 in		ISO 13468-2
 89 %
@Thickness 1.00 mm		89 %
@Thickness 0.0394 in		ISO 13468-2
 89 %
@Thickness 2.00 mm		89 %
@Thickness 0.0787 in		ISO 13468-2
 
Processing PropertiesMetricEnglishComments
Melt Temperature 300 °C572 °FInjection; ISO 294
Mold Temperature 80.0 °C176 °FInjection; ISO 294
Injection Velocity 200 mm/sec7.87 in/secISO 294

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