Covestro Makroblend® EL 703 Polycarbonate + Polyester-based Blend, Impact Modified, Flame-Retardant, UV Stabilized

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Covestro Makroblend® EL 703 Polycarbonate + Polyester-based Blend, Impact Modified, Flame-Retardant, UV Stabilized
Categories:	Polymer; Thermoplastic; Polycarbonate (PC); Polycarbonate/PET Polyester Blend; Polyester, TP; Polyethylene Terephthalate (PET)
Material Notes:	(PC+PET) blend; unreinforced; flame-retardant; UV-stabilized; impact modified; high flow; injection molding grade. Good impact strength, dimensional stability and chemical resistance. Uses include outdoor electrical enclosures. UL746C f1 rated. 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	Metric	English	Comments

Density	1.30 g/cc	0.0470 lb/in³	ISO 1183-1
Moisture Absorption at Equilibrium	0.20 %	0.20 %	50% RH; ISO 62
Water Absorption at Saturation	0.50 %	0.50 %	ISO 62
Linear Mold Shrinkage	0.0060 - 0.0080 cm/cm	0.0060 - 0.0080 in/in	b.o. ISO 2577
Melt Flow	33.8 g/10 min @Load 5.00 kg, Temperature 270 °C	33.8 g/10 min @Load 11.0 lb, Temperature 518 °F	ISO 1133

Mechanical Properties	Metric	English	Comments
Tensile Strength at Break	55.0 MPa	7980 psi	50 mm/min; ISO 527-1/2
Tensile Strength, Yield	56.0 MPa	8120 psi	50 mm/min; ISO 527-1/2
Elongation at Break	100 %	100 %	50 mm/min; ISO 527-1/2
Elongation at Yield	4.5 %	4.5 %	50 mm/min; ISO 527-1/2
Tensile Modulus	2.30 GPa	334 ksi	50 mm/min; ISO 527-1/2
Flexural Strength	83.0 MPa	12000 psi	2 mm/min; ISO 527-1/2
Flexural Yield Strength	71.0 MPa	10300 psi	3.5% strain, 2 mm/min; ISO 178
Flexural Modulus	2.25 GPa	326 ksi	2 mm/min; ISO 178
Izod Impact, Notched (ISO)	15.0 kJ/m² @Temperature -30.0 °C	7.14 ft-lb/in² @Temperature -22.0 °F	ISO 180-A
	50.0 kJ/m² @Temperature 23.0 °C	23.8 ft-lb/in² @Temperature 73.4 °F	ISO 180-A
Charpy Impact, Notched	5.00 J/cm² @Temperature -30.0 °C	23.8 ft-lb/in² @Temperature -22.0 °F	ISO 179 1eA
	8.30 J/cm² @Temperature 23.0 °C	39.5 ft-lb/in² @Temperature 73.4 °F	ISO 179 1eA

Electrical Properties	Metric	English	Comments
Volume Resistivity	1.00e+14 ohm-cm	1.00e+14 ohm-cm	IEC 60093
Surface Resistance	1.00e+16 ohm	1.00e+16 ohm	IEC 60093
Dielectric Constant	3.3 @Frequency 1e+6 Hz	3.3 @Frequency 1e+6 Hz	IEC 60250
	3.5 @Frequency 100 Hz	3.5 @Frequency 100 Hz	IEC 60250
Dielectric Strength	34.0 kV/mm @Thickness 1.00 mm	864 kV/in @Thickness 0.0394 in	IEC 60243-1
Dissipation Factor	0.0030 @Frequency 100 Hz	0.0030 @Frequency 100 Hz	IEC 60250
	0.020 @Frequency 1e+6 Hz	0.020 @Frequency 1e+6 Hz	IEC 60250
Comparative Tracking Index	200 V	200 V	Solution A; IEC 60112

Thermal Properties	Metric	English	Comments
CTE, linear, Parallel to Flow	70.0 µm/m-°C @Temperature 23.0 - 55.0 °C	38.9 µin/in-°F @Temperature 73.4 - 131 °F	ISO 11359-1,-2
CTE, linear, Transverse to Flow	80.0 µm/m-°C @Temperature 23.0 - 55.0 °C	44.4 µin/in-°F @Temperature 73.4 - 131 °F	ISO 11359-1,-2
Thermal Conductivity	2.00 W/m-K	13.9 BTU-in/hr-ft²-°F	cross-flow; ISO 8302
Deflection Temperature at 0.46 MPa (66 psi)	119 °C	246 °F	ISO 75-1,-2
Deflection Temperature at 1.8 MPa (264 psi)	96.0 °C	205 °F	ISO 75-1,-2
Vicat Softening Point	132 °C @Load 5.10 kg	270 °F @Load 11.2 lb	120°C/h; ISO 306
UL RTI, Electrical	105 °C @Thickness 1.50 mm	221 °F @Thickness 0.0591 in	UL 746B
UL RTI, Mechanical with Impact	90.0 °C @Thickness 1.50 mm	194 °F @Thickness 0.0591 in	UL 746B
UL RTI, Mechanical without Impact	105 °C @Thickness 1.50 mm	221 °F @Thickness 0.0591 in	UL 746B
Flammability, UL94	V-0 @Thickness 1.50 mm	V-0 @Thickness 0.0591 in
	V-0 @Thickness 3.00 mm	V-0 @Thickness 0.118 in
	5VA @Thickness 3.00 mm	5VA @Thickness 0.118 in

Processing Properties	Metric	English	Comments
Melt Temperature	270 °C	518 °F	Injection; ISO 294
Mold Temperature	70.0 °C	158 °F	Injection; ISO 294
Injection Velocity	200 mm/sec	7.87 in/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 view all the property values for this datasheet as they were originally entered into MatWeb.

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