Covestro Makrolon® 3208 Polycarbonate

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Covestro Makrolon® 3208 Polycarbonate
Categories:	Polymer; Thermoplastic; Polycarbonate (PC); Polycarbonate, Molded
Material Notes:	MVR (300 °C/1.2 kg) 5.0 cm³/10 min; medical devices; suitable for ETO and steam sterilization at 121°C; biocompatible according to many ISO 10993-1 test requirements; high viscosity; 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
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Physical Properties	Original Value	Comments

Bulk Density	0.660 g/cc	Pellets; ISO 60
Density	1.20 g/cc	ISO 1183-1
Moisture Absorption at Equilibrium	0.12 %	50% RH; ISO 62
Water Absorption at Saturation	0.30 %	ISO 62
Linear Mold Shrinkage	0.0060 - 0.0080 cm/cm	parallel/normal; b.o. ISO 2577
Linear Mold Shrinkage, Flow	0.0070 cm/cm	60x60x2 mm; 500 bar; ISO 294-4
Linear Mold Shrinkage, Transverse	0.0075 cm/cm	60x60x2 mm; 500 bar; ISO 294-4
Melt Flow	5.5 g/10 min @Load 1.20 kg, Temperature 300 °C	ISO 1133

Mechanical Properties	Original Value	Comments
Puncture Resistance	5800 N @Temperature 23.0 °C	ISO 6603-2
	6700 N @Temperature -30.0 °C	ISO 6603-2
Ball Indentation Hardness	111 MPa	ISO 2039-1
Tensile Strength at Break	75.0 MPa	50 mm/min; ISO 527-1/2
Tensile Strength, Yield	65.0 MPa	50 mm/min; ISO 527-1/2
Elongation at Break	>= 50 %	Nominal, 50 mm/min; ISO 527-1/2
	120 %	50 mm/min; ISO 527-1/2
Elongation at Yield	6.3 %	50 mm/min; ISO 527-1/2
Tensile Modulus	2.35 GPa	1 mm/min; ISO 527-1/2
Flexural Strength	95.0 MPa	2 mm/min; ISO 178
Flexural Yield Strength	72.0 MPa @Strain 3.5 %	2 mm/min; ISO 178
Flexural Modulus	2.35 GPa	2 mm/min; ISO 178
Flexural Strain at Yield	7.2 %	2 mm/min; ISO 178
Izod Impact, Notched (ISO)	20.0 kJ/m² @Thickness 3.00 mm, Temperature -30.0 °C	complete break; ISO 7391/b.o. ISO 180-A
	75.0 kJ/m² @Thickness 3.00 mm, Temperature 23.0 °C	partial break; ISO 7391/b.o. ISO 180-A
Charpy Impact Unnotched	NB	ISO 179-1eU
	NB @Temperature -30.0 °C	ISO 179-1eU
	NB @Temperature -60.0 °C	ISO 179-1eU
Charpy Impact, Notched	1.80 J/cm² @Thickness 3.00 mm, Temperature -30.0 °C	complete break; ISO 7391/b.o. ISO 179-1eA
	8.00 J/cm² @Thickness 3.00 mm, Temperature 23.0 °C	partial break; ISO 7391/b.o. ISO 179-1eA
Puncture Energy	65.0 J @Temperature 23.0 °C	ISO 6603-2
	75.0 J @Temperature -30.0 °C	ISO 6603-2
Tensile Creep Modulus, 1 hour	2200 MPa	ISO 899-1
Tensile Creep Modulus, 1000 hours	1900 MPa	ISO 899-1

Thermal Properties	Original Value	Comments
CTE, linear, Parallel to Flow	65.0 µm/m-°C @Temperature 23.0 - 55.0 °C	ISO 11359-1,-2
CTE, linear, Transverse to Flow	65.0 µm/m-°C @Temperature 23.0 - 55.0 °C	ISO 11359-1,-2
Thermal Conductivity	0.200 W/m-K	cross-flow; ISO 8302
Hot Ball Pressure Test	141 °C	IEC 60695-10-2
Deflection Temperature at 0.46 MPa (66 psi)	142 °C	ISO 75-1,-2
Deflection Temperature at 1.8 MPa (264 psi)	130 °C	ISO 75-1,-2
Vicat Softening Point	150 °C	50 N, 50°C/h; ISO 306
	151 °C	50 N, 120°C/h; ISO 306
Glass Transition Temp, Tg	150 °C
Flash Point	480 °C	ignition; ASTM D1929
	550 °C	self ignition; ASTM D1929

Optical Properties	Original Value	Comments
Refractive Index	1.587	ISO 489
Haze	<= 0.80 % @Thickness 3.00 mm	ISO 14782
Transmission, Visible	87 % @Thickness 4.00 mm	ISO 13468-2
	88 % @Thickness 3.00 mm	ISO 13468-2
	89 % @Thickness 1.00 mm	ISO 13468-2
	89 % @Thickness 2.00 mm	ISO 13468-2

Processing Properties	Original Value	Comments
Melt Temperature	310 °C	Injection; ISO 294
Mold Temperature	90.0 °C	Injection; ISO 294
Injection Velocity	200 mm/sec	ISO 294

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 go back to viewing the property data in MatWeb's normal format.

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PBA443 / 26944

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