Covestro Makroblend® UT-250 Polycarbonate + Polyester Blend

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Covestro Makroblend® UT-250 Polycarbonate + Polyester Blend
Categories:	Polymer; Thermoplastic; Polycarbonate (PC); Polyester, TP
Material Notes:	(PC+PET)-blend, impact modified, easy release, injection molding. Makroblend UT250 offers high heat resistance, good chemical resistance and flowability. Additionally, molded parts from UT250 having exceptional dimensional stability. 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	1.22 g/cc	ISO 1183-1
Moisture Absorption at Equilibrium	0.20 %	23°C/50% R.H.; ISO 62
Water Absorption at Saturation	0.56 %	ISO 62
Linear Mold Shrinkage, Flow	0.0010 - 0.0020 cm/cm	Post; b.o. ISO 2577
	0.0060 - 0.0080 cm/cm	b.o. ISO 2577
Melt Flow	27 g/10 min @Load 5.00 kg, Temperature 265 °C	ISO 1133

Mechanical Properties	Original Value	Comments
Ball Indentation Hardness	100 MPa	ISO 2039-1
Tensile Strength at Break	50.0 MPa	50 mm/min; ISO 527-1/2
Tensile Strength, Yield	55.0 MPa	50 mm/min; ISO 527-1/2
Elongation at Break	>= 50 %	Nominal, 50 mm/min; ISO 527-1/2
Elongation at Yield	5.0 %	50 mm/min; ISO 527-1/2
Tensile Modulus	2.25 GPa	1 mm/min; ISO 527-1/2
Flexural Strength	88.0 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
Flexural Strain at Yield	6.1 %	2 mm/min; ISO 178
Izod Impact, Notched (ISO)	25.0 kJ/m² @Temperature -30.0 °C	ISO 180-A
	40.0 kJ/m² @Temperature -20.0 °C	ISO 180-A
	60.0 kJ/m² @Temperature 23.0 °C	ISO 180-A
Izod Impact, Unnotched (ISO)	NB @Temperature 23.0 °C	ISO 180-1C
	NB @Temperature -30.0 °C	ISO 180-1C
Charpy Impact Unnotched	NB @Temperature 23.0 °C	ISO 178-1eU
	NB @Temperature -30.0 °C	ISO 178-1eU
Charpy Impact, Notched	3.00 J/cm² @Temperature -30.0 °C	ISO 178-1eA
	7.00 J/cm² @Temperature 23.0 °C	ISO 178-1eA

Electrical Properties	Original Value	Comments
Volume Resistivity	>= 1.00e+15 ohm-cm	IEC 60093
Surface Resistance	>= 1.00e+17 ohm	IEC 60093
Dielectric Constant	3.0 @Frequency 1e+6 Hz	IEC 60250
	3.2 @Frequency 100 Hz	IEC 60250
Dielectric Strength	34.0 kV/mm @Thickness 1.00 mm	IEC 60243-1
Dissipation Factor	0.0016 @Frequency 100 Hz	IEC 60250
	0.0146 @Frequency 1e+6 Hz	IEC 60250
Comparative Tracking Index	250 V	IEC 60112

Thermal Properties	Original Value	Comments
Deflection Temperature at 0.46 MPa (66 psi)	125 °C	ISO 75-1,-2
Deflection Temperature at 1.8 MPa (264 psi)	110 °C	ISO 75-1,-2
Vicat Softening Point	140 °C @Load 5.10 kg	120°C/hr; ISO 306

Processing Properties	Original Value	Comments
Melt Temperature	265 °C	Injection Molding; ISO 294
Mold Temperature	65.0 °C	Injection Molding; ISO 294
Injection Velocity	200 mm/sec	ISO 294
Drying Temperature	110 °C	ISO 294
Dry Time	4.00 hour	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 go back to viewing the property data in MatWeb's normal format.

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PB10220 / 26258

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