Covestro Makrolon® 3108 Polycarbonate, Extrusion Grade

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Covestro Makrolon® 3108 Polycarbonate, Extrusion Grade
Categories:	Polymer; Thermoplastic; Polycarbonate (PC); Polycarbonate, Unreinforced, Flame Retardant
Material Notes:	MVR (300 °C/1.2 kg) 6.0 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	0.0070 cm/cm	60x60x2 mm; 500 bar; ISO 294-4
Linear Mold Shrinkage, Flow	0.0075 cm/cm	60x60x2 mm; 500 bar; ISO 294-4
Linear Mold Shrinkage, Transverse	0.0060 - 0.0080 cm/cm	parallel/normal; b.o. ISO 2577
Melt Flow	6.5 g/10 min @Load 1.20 kg, Temperature 300 °C	ISO 1133

Mechanical Properties	Original Value	Comments
Puncture Resistance	5600 N @Temperature 23.0 °C	ISO 6603-2
	6500 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	96.0 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)	16.0 kJ/m² @Thickness 3.20 mm, Temperature -30.0 °C	complete break; b.o. ISO 180-A
	90.0 kJ/m² @Thickness 3.20 mm, Temperature 23.0 °C	partial break; 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	60.0 J @Temperature 23.0 °C	ISO 6603-2
	70.0 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	ISO 8302
Hot Ball Pressure Test	140 °C	IEC 60695-10-2
Deflection Temperature at 0.46 MPa (66 psi)	141 °C	ISO 75-1,-2
Deflection Temperature at 1.8 MPa (264 psi)	129 °C	ISO 75-1,-2
Vicat Softening Point	149 °C	50 N; 50 °C/h; ISO 306
	150 °C	50 N; 120 °C/h; ISO 306
Glass Transition Temp, Tg	149 °C	ISO 11357-1,-2
Flash Point	430 °C	ignition; ASTM D1929
	550 °C	Self ignition; ASTM D1929

Optical Properties	Original Value	Comments
Refractive Index	1.587	Procedure A; 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	300 °C	Injection; ISO 294
Mold Temperature	80.0 °C	Injection; ISO 294
Injection Velocity	200 mm/sec	ISO 294

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