Borealis MD231U Polypropylene Compound, Mineral Filled

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Borealis MD231U Polypropylene Compound, Mineral Filled
Categories:	Polymer; Thermoplastic; Polypropylene (PP); Polypropylene, Mineral Reinforced
Material Notes:	MD231U is a 20 % mineral filled polypropylene compound intended for injection molding. This material has excellent balanced mechanical properties and a medium melt flow rate. Applications: Air ducts, Air filters, Air conditioning parts, and Automotive under the bonnet parts. Information provided by Borealis AG
Key Words:	PP
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Physical Properties	Metric	English	Comments

Density	1.05 g/cc	0.0379 lb/in³	ISO 1183
Linear Mold Shrinkage	0.011 cm/cm	0.011 in/in	Borealis Method; average process
Melt Flow	6.0 g/10 min @Load 2.16 kg, Temperature 230 °C	6.0 g/10 min @Load 4.76 lb, Temperature 446 °F	ISO 1133
	27.5 g/10 min @Load 5.00 kg, Temperature 230 °C	27.5 g/10 min @Load 11.0 lb, Temperature 446 °F	ISO 1133

Mechanical Properties	Metric	English	Comments
Ball Indentation Hardness	80.6 MPa	11700 psi	358 N/30s; ISO 2039
Tensile Strength, Yield	36.0 MPa	5220 psi	50mm/min; ISO 527-2
Elongation at Yield	10 %	10 %	50mm/min; ISO 527-2
Flexural Modulus	2.70 GPa	392 ksi	2mm/min; ISO 178
Charpy Impact Unnotched	1.37 J/cm² @Temperature -20.0 °C	6.52 ft-lb/in² @Temperature -4.00 °F	ISO 179/1eU
	4.20 J/cm² @Temperature 23.0 °C	20.0 ft-lb/in² @Temperature 73.4 °F	ISO 179/1eU
Charpy Impact, Notched	0.120 J/cm² @Temperature -20.0 °C	0.571 ft-lb/in² @Temperature -4.00 °F	ISO 179/1eA
	0.300 J/cm² @Temperature 23.0 °C	1.43 ft-lb/in² @Temperature 73.4 °F	ISO 179/1eA

Thermal Properties	Metric	English	Comments
Deflection Temperature at 0.46 MPa (66 psi)	125 °C	257 °F	ISO 75-2
Deflection Temperature at 1.8 MPa (264 psi)	70.0 °C	158 °F	ISO 75-2

Processing Properties	Metric	English	Comments
Feed Temperature	40.0 - 80.0 °C	104 - 176 °F
Melt Temperature	220 - 260 °C	428 - 500 °F	mass temperature
Mold Temperature	30.0 - 50.0 °C	86.0 - 122 °F
Injection Velocity	100 - 200 mm/sec	3.94 - 7.87 in/sec
Hold Pressure	30.0 - 60.0 MPa	4350 - 8700 psi

Descriptive Properties
Back Pressure	low to medium
Emission (µgC/g)	< 50		VDA 277
Fogging (mg)	< 2		100°C, 16h; DIN 75201
Screw Speed	low to medium

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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PBOREA530 / 108789

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