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Borealis MD231U Polypropylene Compound, Mineral Filled

Category Polymer , Thermoplastic , Polypropylene (PP) , Polypropylene, Mineral Reinforced
Manufacturer Borealis
Trade Name
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Borealis MD231U Polypropylene Compound, Mineral Filled.pdf
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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
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
Processing Temperature 220 - 260 °C
428 - 500 °F
mass temperature
Feed Temperature 40.0 - 80.0 °C
104 - 176 °F
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 Value Comments
Back Pressure low to medium
Emission (µgC/g) < 50
VDA 277
Fogging (mg) < 2
100°C, 16h; DIN 75201
Screw Speed low to medium
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