Covestro Makroblend® EL-700 Polycarbonate + Polyester Blend

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Covestro Makroblend® EL-700 Polycarbonate + Polyester Blend
Categories:	Polymer; Thermoplastic; Polycarbonate (PC); Polyester, TP
Material Notes:	(PC+PET) blend; unreinforced; flame-retardant; impact modified; injection molding grade. Good impact strength, dimensional stability and chemical resistance. Uses include indoor electrical enclosures. 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

Density	1.28 g/cc	ISO 1183-1
Moisture Absorption at Equilibrium	0.20 %	23°C/50% R.H.; ISO 62
Water Absorption at Saturation	0.50 %	ISO 62
Linear Mold Shrinkage, Flow	0.0060 - 0.0080 cm/cm	b.o. ISO 2577
Melt Flow	19 g/10 min @Load 5.00 kg, Temperature 270 °C	ISO 1133

Mechanical Properties	Original Value	Comments
Puncture Resistance	4100 N @Temperature 23.0 °C	Max force; ISO 6603-2
	5200 N @Temperature -30.0 °C	Max force; ISO 6603-2
Tensile Strength at Break	57.0 MPa	50 mm/min; ISO 527-1/2
Tensile Strength, Yield	58.0 MPa	50 mm/min; ISO 527-1/2
Elongation at Break	100 %	Nominal, 50 mm/min; ISO 527-1/2
Elongation at Yield	4.5 %	50 mm/min; ISO 527-1/2
Tensile Modulus	2.35 GPa	1 mm/min; ISO 527-1/2
Flexural Strength	86.0 MPa	2 mm/min; ISO 178
Flexural Yield Strength	72.0 MPa @Strain 3.5 %	2 mm/min; ISO 178
Flexural Modulus	2.30 GPa	2 mm/min; ISO 178
Izod Impact, Notched (ISO)	30.0 kJ/m² @Temperature -30.0 °C	ISO 180-A
	60.0 kJ/m² @Temperature 23.0 °C	ISO 180-A
Charpy Impact, Notched	3.00 J/cm² @Temperature -30.0 °C	ISO 179-1eA
	6.50 J/cm² @Temperature 23.0 °C	ISO 179-1eA
Puncture Energy	45.0 J @Temperature 23.0 °C	ISO 6603-2
	50.0 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	0.0020 @Frequency 100 Hz	IEC 60250
	0.013 @Frequency 1e+6 Hz	IEC 60250
Comparative Tracking Index	225 V	Solution A; IEC 60112

Thermal Properties	Original Value	Comments
CTE, linear, Parallel to Flow	80.0 µm/m-°C @Temperature 23.0 - 55.0 °C	ISO 11359-1,-2
CTE, linear, Transverse to Flow	90.0 µm/m-°C @Temperature 23.0 - 55.0 °C	ISO 11359-1,-2
Thermal Conductivity	0.200 W/m-K	cross-flow; ISO 8302
Deflection Temperature at 0.46 MPa (66 psi)	123 °C	ISO 75-1,-2
Deflection Temperature at 1.8 MPa (264 psi)	100 °C	ISO 75-1,-2
Vicat Softening Point	136 °C @Load 5.10 kg	120°C/h; ISO 306
Flammability, UL94	V-0 @Thickness 1.50 mm	UL Recognized
	V-0 @Thickness 3.00 mm	UL Recognized
	5VA @Thickness 3.00 mm	UL Recognized

Processing Properties	Original Value	Comments
Melt Temperature	270 °C	Injection Molding; ISO 294
Mold Temperature	70.0 °C	Injection Molding; ISO 294
Injection Velocity	200 mm/sec	ISO 294

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