Covestro Makrolon® 1243 Polycarbonate

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Covestro Makrolon® 1243 Polycarbonate (discontinued **)
Categories:	Polymer; Thermoplastic; Polycarbonate (PC); Polycarbonate, Extruded
Material Notes:	ISO 7391-PC,ELS,(,,)-09-9 Global grade MVR (300 °C/1.2 kg) 6.0 cm³/10 min Extrusion High viscosity Branched UV stabilized Easy release Available in color code 550111only Multi wall sheet/profiles 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	Metric	English	Comments

Density	1.20 g/cc	0.0434 lb/in³	ISO 1183
Melt Density	1.02 g/cc @Temperature 300 °C	0.0368 lb/in³ @Temperature 572 °F
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/cm	0.0070 in/in	ISO 294-4,2577
Linear Mold Shrinkage, Transverse	0.0080 cm/cm	0.0080 in/in	ISO 294-4,2577
Melt Flow	6.1 g/10 min @Load 1.20 kg, Temperature 300 °C	6.1 g/10 min @Load 2.65 lb, Temperature 572 °F	ISO 1133

Mechanical Properties	Metric	English	Comments
Tensile Strength, Yield	67.0 MPa	9720 psi	ISO 527-1/-2
Elongation at Break	>= 50 %	>= 50 %	Nominal; ISO 527-1/-2
Elongation at Yield	6.2 %	6.2 %	ISO 527-1/-2
Tensile Modulus	2.40 GPa	348 ksi	ISO 527-1/-2
Charpy Impact Unnotched	NB	NB	ISO 179/1eU
	NB @Temperature -30.0 °C	NB @Temperature -22.0 °F	ISO 179/1eU
Impact	5500	5500	Puncture - maximum force (N); ISO 6603-2
	6400 @Temperature -30.0 °C	6400 @Temperature -22.0 °F	Puncture - maximum force (N); ISO 6603-2
Puncture Energy	60.0 J	44.3 ft-lb	ISO 6603-2
	65.0 J @Temperature -30.0 °C	47.9 ft-lb @Temperature -22.0 °F	ISO 6603-2
Tensile Creep Modulus, 1 hour	2200 MPa	319000 psi	ISO 899-1
Tensile Creep Modulus, 1000 hours	1900 MPa	276000 psi	ISO 899-1

Electrical Properties	Metric	English	Comments
Volume Resistivity	>= 1.00e+13 ohm-cm	>= 1.00e+13 ohm-cm	IEC 60093
Surface Resistance	>= 1.00e+15 ohm	>= 1.00e+15 ohm	IEC 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/mm	864 kV/in	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 V	250 V	IEC 60112

Thermal Properties	Metric	English	Comments
CTE, linear, Parallel to Flow	65.0 µm/m-°C	36.1 µin/in-°F	ISO 11359-1/-2
CTE, linear, Transverse to Flow	65.0 µm/m-°C	36.1 µin/in-°F	ISO 11359-1/-2
Specific Heat Capacity	1.70 J/g-°C	0.406 BTU/lb-°F	Melt
Thermal Conductivity	0.173 W/m-K	1.20 BTU-in/hr-ft²-°F	Melt
Deflection Temperature at 0.46 MPa (66 psi)	137 °C	279 °F	ISO 75-1/-2
Deflection Temperature at 1.8 MPa (264 psi)	126 °C	259 °F	ISO 75-1/-2
Vicat Softening Point	144 °C	291 °F	50°C/h 50N; ISO 306
Glass Transition Temp, Tg	145 °C	293 °F	ISO 11357-1/-2
Flammability, UL94	HB @Thickness 0.800 mm	HB @Thickness 0.0315 in	IEC 60695-11-10
Oxygen Index	27 %	27 %	ISO 4589-1/-2

Optical Properties	Metric	English	Comments
Transmission, Visible	88 %	88 %	ISO 13468-1, -2

Processing Properties	Metric	English	Comments
Melt Temperature	300 °C	572 °F	Injection Molding; ISO 294
Mold Temperature	80.0 °C	176 °F	Injection Molding; ISO 10724
Ejection Temperature	130 °C	266 °F
Injection Velocity	200 mm/sec	7.87 in/sec	ISO 294
Drying Temperature	120 °C	248 °F
Dry Time	2.00 - 3.00 hour	2.00 - 3.00 hour	Dry air dryer
	2.00 - 4.00 hour	2.00 - 4.00 hour	Fresh air dryer (high speed dryer)
	4.00 - 12.0 hour	4.00 - 12.0 hour	Circulating air drying oven (50 % fresh air)
Moisture Content	<= 0.010 %	<= 0.010 %

Descriptive Properties
Availability	Asia Pacific
	Europe
	India
	Near East/Africa
	North America
	South and Central America
Eff. thermal diffusivity (m²/s)	1E-07
Feature	Light stabilized or stable to light
	Release agent
	U.V. stabilized or stable to weather
Form	Pellets
Process	Other Extrusion
	Profile Extrusion
	Sheet Extrusion
UL recognition	UL\lh\n

**
Materials flagged as discontinued () are no longer part of the manufacturer’s standard product line according to our latest information. These materials may be available by special order, in distribution inventory, or reinstated as an active product. Data sheets from materials that are no longer available remain in MatWeb to assist users in finding replacement materials.

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PB09890 / 92730

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