Covestro Bayblend® FR421 MT PC Blend

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Covestro Bayblend® FR421 MT PC Blend
Categories:	Polymer; Thermoplastic; Polycarbonate (PC); Polycarbonate, Unreinforced, Flame Retardant
Material Notes:	Rubber modified PC blend; mineral filled ; flame retardant; Vicat/B 120 temperature = 134 °C; extrusion grade for aircraft interiors Information provided by Covestro
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Physical Properties	Original Value	Comments

Density	1.29 g/cc	ISO 1183-1
Moisture Absorption at Equilibrium	0.20 %	ISO 62
Water Absorption at Saturation	0.50 %	ISO 62
Viscosity	640000 cP @Frequency 1000 Hz, Temperature 260 °C	Melt; b.o. ISO 11443-A
Linear Mold Shrinkage, Flow	0.0050 - 0.0070 cm/cm	150x105x3 mm; 260 °C / MT 80 °C; b. o. ISO 2577
Linear Mold Shrinkage, Transverse	0.0060 - 0.0080 cm/cm	150x105x3 mm; 260 °C / MT 80 °C; b. o. ISO 2577
Melt Flow	2.58 g/10 min @Load 5.00 kg, Temperature 260 °C	ISO 1133

Mechanical Properties	Original Value	Comments
Tensile Strength at Break	47.0 MPa	50 mm/min; ISO 527-1,-2
Tensile Strength, Yield	58.0 MPa	50 mm/min; ISO 527-1,-2
Elongation at Break	22 %	50 mm/min; ISO 527-1,-2
Elongation at Yield	4.0 %	50 mm/min; ISO 527-1,-2
Tensile Modulus	3400 MPa	1 mm/min; ISO 527-1,-2
Izod Impact, Notched (ISO)	30.0 kJ/m²	ISO 180-A

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	41.0 kV/mm @Thickness 1.00 mm	IEC 60243-1
Dissipation Factor	0.0046 @Frequency 100 Hz	IEC 60250
	0.0094 @Frequency 1e+6 Hz	IEC 60250
Comparative Tracking Index	200 V	Solution A; IEC 60112

Thermal Properties	Original Value	Comments
CTE, linear, Parallel to Flow	50.0 µm/m-°C @Temperature 23.0 - 55.0 °C	ISO 11359-1, -2
CTE, linear, Transverse to Flow	60.0 µm/m-°C @Temperature 23.0 - 55.0 °C	ISO 11359-1, -2
Deflection Temperature at 0.46 MPa (66 psi)	129 °C	ISO 75-1,-2
Deflection Temperature at 1.8 MPa (264 psi)	118 °C	ISO 75-1,-2
Vicat Softening Point	132 °C @Load 5.10 kg	50°C/h; ISO 306
	134 °C @Load 5.10 kg	120°C/h; ISO 306
Flammability, UL94	V-0 @Thickness 0.750 mm
	5VA @Thickness 3.00 mm

Processing Properties	Original Value	Comments
Melt Temperature	260 °C	Injection; ISO 294
Mold Temperature	80.0 °C	Injection; ISO 294
Injection Velocity	240 mm/sec	ISO 294

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PCOVEST0043 / 201826

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