Covestro Makrolon® WB1239 Polycarbonate

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Covestro Makrolon® WB1239 Polycarbonate
Categories:	Polymer; Thermoplastic; Polycarbonate (PC); Polycarbonate, Molded
Material Notes:	MVR (300 °C/1.2 kg) 2.0 cm³/10 min; blow molding; high viscosity; branched; food contact quality; extrusion blow molding; injection stretch blow molding; available in transparent colors only; water bottles As of 1 September 2015, Bayer MaterialScience was separated from Bayer AG and officially adopted its new name – Covestro.
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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
Moisture Absorption at Equilibrium	0.12 %	ISO 62
Water Absorption at Saturation	0.30 %	ISO 62
Water Vapor Transmission	15.0 g/m²/day @Thickness 0.100 mm, Temperature 23.0 °C	85% RH; ISO 15106-1
Oxygen Transmission	740 cc-mm/m²-24hr-atm	cm³/(m²·24 h·bar), 100 µm film; b.o. ISO 2556
Nitrogen Transmission	140 cc-mm/m²-24hr-atm	cm³/(m²·24 h·bar), 100 µm film; b.o. ISO 2556
Carbon Dioxide Transmission	4200 cc-mm/m²-24hr-atm	cm³/(m²·24 h·bar), 100 µm film; b.o. ISO 2556
Linear Mold Shrinkage, Flow	0.0075 cm/cm	60x60x2 mm; 500 bar; ISO 294-4
Linear Mold Shrinkage, Transverse	0.0080 cm/cm	60x60x2 mm; 500 bar; ISO 294-4
Melt Flow	2.5 g/10 min @Load 1.20 kg, Temperature 300 °C	ISO 1133

Mechanical Properties	Original Value	Comments
Ball Indentation Hardness	108 MPa	ISO 2039-1
Tensile Strength at Break	65.0 MPa	50 mm/min; ISO 527-1/-2
Tensile Strength, Yield	64.0 MPa	50 mm/min; ISO 527-1/-2
Elongation at Break	>= 50 %	Nominal, 50 mm/min; ISO 527-1/-2
	100 %	50 mm/min; ISO 527-1/-2
Elongation at Yield	6.6 %	50 mm/min; ISO 527-1/-2
Tensile Modulus	2300 MPa	1 mm/min; ISO 527-1/-2
Flexural Strength	94.0 MPa	2 mm/min; ISO 178
Flexural Yield Strength	70.0 MPa @Strain 3.5 %	2 mm/min; ISO 178
Flexural Modulus	2.30 GPa	2 mm/min; ISO 178
Flexural Strain at Yield	7.2 %	2 mm/min; ISO 178
Izod Impact, Notched (ISO)	55.0 kJ/m² @Thickness 3.00 mm, Temperature -30.0 °C	complete break; ISO 7391/b.o. ISO 180-A
	65.0 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	2.00 J/cm² @Thickness 3.00 mm, Temperature -30.0 °C	complete break; ISO 7391/b.o. ISO 179-1eA
	7.50 J/cm² @Thickness 3.00 mm, Temperature 23.0 °C	partial break; ISO 7391/b.o. ISO 179-1eA
Impact	5500	Puncture - maximum force (N); ISO 6603-2
	6400 @Temperature -30.0 °C	Puncture - maximum force (N); ISO 6603-2
Puncture Energy	55.0 J	ISO 6603-2
	60.0 J @Temperature -30.0 °C	ISO 6603-2

Electrical Properties	Original Value	Comments
Volume Resistivity	1.00e+14 ohm-cm	IEC 60093
Surface Resistance	1.00e+16 ohm	IEC 60093
Dielectric Constant	3.0 @Frequency 1e+6 Hz	IEC 60250
	3.1 @Frequency 100 Hz	IEC 60250
Dielectric Strength	34.0 kV/mm	1 mm; IEC 60243-1
Dissipation Factor	0.0010 @Frequency 100 Hz	IEC 60250
	0.010 @Frequency 1e+6 Hz	IEC 60250
Comparative Tracking Index	100 V	CTI M; Solution B; IEC 60112
	250 V	Solution A; IEC 60112

Thermal Properties	Original Value	Comments
CTE, linear, Parallel to Flow	70.0 µm/m-°C @Temperature 23.0 - 55.0 °C	ISO 11359-1/-2
CTE, linear, Transverse to Flow	70.0 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	144 °C	IEC 60695-10-2
Deflection Temperature at 0.46 MPa (66 psi)	145 °C	ISO 75-1/-2
Deflection Temperature at 1.8 MPa (264 psi)	132 °C	ISO 75-1/-2
Vicat Softening Point	150 °C	50°C/h 50N; ISO 306
	151 °C	120°C/h 50N; ISO 306
Glass Transition Temp, Tg	152 °C	ISO 11357-1/-2
Flash Point	480 °C	ignition; ASTM D1929
	550 °C	self ignition; ASTM D1929
Oxygen Index	26 %	Method A; ISO 4589-2
Glow Wire Ignition Temperature	900 °C @Thickness 0.750 mm	IEC 60695-2-13
	900 °C @Thickness 1.50 mm	IEC 60695-2-13
	900 °C @Thickness 3.00 mm	IEC 60695-2-13
Glow Wire Flammability Index	900 °C @Thickness 0.750 mm	IEC 60695-2-12
	900 °C @Thickness 1.50 mm	IEC 60695-2-12
	930 °C @Thickness 3.00 mm	IEC 60695-2-12

Optical Properties	Original Value	Comments
Refractive Index	1.587	Procedure A; ISO 489
Haze	<= 0.80 % @Thickness 3.00 mm	ISO 14782
Transmission, Visible	84 % @Thickness 4.00 mm	ISO 13468-2
	87 % @Thickness 2.00 mm	ISO 13468-2
	88 % @Thickness 1.00 mm	ISO 13468-2

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

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