Covestro Makroblend® UT250 HR PC+PET

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Covestro Makroblend® UT250 HR PC+PET
Categories:	Polymer; Thermoplastic; Polycarbonate (PC); Polycarbonate/PET Polyester Blend
Material Notes:	(PC+PET)-blend, impact modified, improved hydrolysis resistance compared to standard Makroblend UT grades, injection molding grade. Good low-temperature impact strength, flowability, and chemical resistance. Applications include lead-acid battery housings. Information provided by Covestro
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Physical Properties	Metric	English	Comments

Density	1.215 g/cc	0.04389 lb/in³	ISO 1183-1
Moisture Absorption at Equilibrium	0.16 %	0.16 %	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	600 bar; b.o. ISO 2577
Melt Flow	22 g/10 min @Temperature 270 °C	22 g/10 min @Temperature 518 °F	ISO 1133

Mechanical Properties	Metric	English	Comments
Tensile Strength at Break	57.0 MPa	8270 psi	50 mm/min; ISO 527-1,-2
Tensile Strength, Yield	55.0 MPa	7980 psi	50 mm/min; ISO 527-1,-2
Elongation at Break	110 %	110 %	50 mm/min, Nominal; ISO 527-1,-2
Elongation at Yield	4.9 %	4.9 %	50 mm/min; ISO 527-1,-2
Tensile Modulus	2.20 GPa	319 ksi	1 mm/min; ISO 527-1,-2
Flexural Strength	82.0 MPa	11900 psi	2 mm/min; ISO 178
Flexural Yield Strength	68.0 MPa @Strain 3.5 %	9860 psi @Strain 3.5 %	2 mm/min; ISO 178
Flexural Modulus	2.20 GPa	319 ksi	2 mm/min; ISO 178
Izod Impact, Notched (ISO)	40.0 kJ/m² @Temperature -30.0 °C	19.0 ft-lb/in² @Temperature -22.0 °F	ISO 7391/b.o. ISO 180-A
	60.0 kJ/m² @Temperature 23.0 °C	28.6 ft-lb/in² @Temperature 73.4 °F	ISO 7391/b.o. ISO 180-A
Izod Impact, Unnotched (ISO)	NB @Temperature 23.0 °C	NB @Temperature 73.4 °F	ISO 180-1C
	NB @Temperature -30.0 °C	NB @Temperature -22.0 °F	ISO 180-1C
Charpy Impact Unnotched	NB @Temperature 23.0 °C	NB @Temperature 73.4 °F	ISO 179-1eU
	NB @Temperature -30.0 °C	NB @Temperature -22.0 °F	ISO 179-1eU
Charpy Impact, Notched	3.50 J/cm² @Temperature -30.0 °C	16.7 ft-lb/in² @Temperature -22.0 °F	ISO 179-1eA
	6.50 J/cm² @Temperature 23.0 °C	30.9 ft-lb/in² @Temperature 73.4 °F	ISO 179-1eA
Impact	4300 @Temperature 23.0 °C	4300 @Temperature 73.4 °F	[N], Puncture Max Force; ISO 6603-2
	5300 @Temperature -30.0 °C	5300 @Temperature -22.0 °F	[N], Puncture Max Force; ISO 6603-2
Puncture Energy	45.0 J @Temperature 23.0 °C	33.2 ft-lb @Temperature 73.4 °F	ISO 6603-2
	47.0 J @Temperature -30.0 °C	34.7 ft-lb @Temperature -22.0 °F	ISO 6603-2

Thermal Properties	Metric	English	Comments
CTE, linear, Parallel to Flow	75.0 µm/m-°C @Temperature 23.0 - 55.0 °C	41.7 µin/in-°F @Temperature 73.4 - 131 °F	ISO 11359-1,-2
CTE, linear, Transverse to Flow	75.0 µm/m-°C @Temperature 23.0 - 55.0 °C	41.7 µin/in-°F @Temperature 73.4 - 131 °F	ISO 11359-1,-2
Thermal Conductivity	0.200 W/m-K	1.39 BTU-in/hr-ft²-°F	cross-flow; ISO 8302
Deflection Temperature at 0.46 MPa (66 psi)	123 °C	253 °F	ISO 75-1,-2
Deflection Temperature at 1.8 MPa (264 psi)	102 °C	216 °F	ISO 75-1,-2
Vicat Softening Point	137 °C @Load 5.10 kg	279 °F @Load 11.2 lb	120°C/h; ISO 306
Flammability, UL94	HB @Thickness 1.50 mm	HB @Thickness 0.0591 in
	HB @Thickness 0.750 mm	HB @Thickness 0.0295 in

Processing Properties	Metric	English	Comments
Melt Temperature	270 °C	518 °F	ISO 294
Mold Temperature	70.0 °C	158 °F	ISO 294
Drying Temperature	110 °C	230 °F	ISO 294
Dry Time	4.00 hour	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 view all the property values for this datasheet as they were originally entered into MatWeb.

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PCOVEST0801 / 202584

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