Covestro Bayblend® KU 1-1446 Polycarbonate + ABS

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Covestro Bayblend® KU 1-1446 Polycarbonate + ABS (discontinued **)
Categories:	Polymer; Thermoplastic; ABS Polymer; Polycarbonate/ABS Alloy, Unreinforced; Polycarbonate (PC)
Material Notes:	Grade with improved low-temperature impact strength and petrol resistance for automotive parts in version BBS904 suitable for extrusion/extrusion blow molding and electroplating applications Vicat/B 120 temperature = 120 °C 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	Metric	English	Comments

Density	1.11 g/cc	0.0401 lb/in³	ISO 1183
Melt Density	0.950 g/cc @Temperature 260 °C	0.0343 lb/in³ @Temperature 500 °F
Water Absorption	0.70 %	0.70 %	Similar to ISO 62
Moisture Absorption at Equilibrium	0.20 %	0.20 %	Similar to ISO 62
Melt Flow	4.8 g/10 min @Load 5.00 kg, Temperature 260 °C	4.8 g/10 min @Load 11.0 lb, Temperature 500 °F	ISO 1133

Mechanical Properties	Metric	English	Comments
Tensile Strength, Yield	45.0 MPa	6530 psi	ISO 527-1/-2
Elongation at Yield	4.5 %	4.5 %	ISO 527-1/-2
Tensile Modulus	1.80 GPa	261 ksi	ISO 527-1/-2

Electrical Properties	Metric	English	Comments
Volume Resistivity	>= 1.00e+13 ohm-cm	>= 1.00e+13 ohm-cm	IEC 60093
Surface Resistance	>= 1.00e+15 ohm	>= 1.00e+15 ohm	IEC 60093
Dielectric Constant	2.9 @Frequency 1e+6 Hz	2.9 @Frequency 1e+6 Hz	IEC 60250
	3.0 @Frequency 100 Hz	3.0 @Frequency 100 Hz	IEC 60250
Dielectric Strength	35.0 kV/mm	889 kV/in	IEC 60243-1
Dissipation Factor	0.0025 @Frequency 100 Hz	0.0025 @Frequency 100 Hz	IEC 60250
	0.0085 @Frequency 1e+6 Hz	0.0085 @Frequency 1e+6 Hz	IEC 60250
Comparative Tracking Index	275 V	275 V	IEC 60112

Thermal Properties	Metric	English	Comments
CTE, linear, Parallel to Flow	90.0 µm/m-°C	50.0 µin/in-°F	ISO 11359-1/-2
CTE, linear, Transverse to Flow	95.0 µm/m-°C	52.8 µin/in-°F	ISO 11359-1/-2
Specific Heat Capacity	1.76 J/g-°C	0.421 BTU/lb-°F	Melt
Thermal Conductivity	0.152 W/m-K	1.05 BTU-in/hr-ft²-°F	Melt
Deflection Temperature at 0.46 MPa (66 psi)	118 °C	244 °F	ISO 75-1/-2
Deflection Temperature at 1.8 MPa (264 psi)	98.0 °C	208 °F	ISO 75-1/-2
Vicat Softening Point	118 °C	244 °F	50°C/h 50N; ISO 306
Flammability, UL94	HB @Thickness 1.50 mm	HB @Thickness 0.0591 in	IEC 60695-11-10

Processing Properties	Metric	English	Comments
Melt Temperature	240 - 280 °C	464 - 536 °F
	260 °C	500 °F	Injection Molding; ISO 294
Mold Temperature	60.0 - 80.0 °C	140 - 176 °F
	60.0 - 80.0 °C	140 - 176 °F
	80.0 °C	176 °F	Injection Molding; ISO 10724
Ejection Temperature	120 °C	248 °F
Injection Velocity	240 mm/sec	9.45 in/sec	ISO 294
Drying Temperature	100 - 110 °C	212 - 230 °F
Dry Time	2.00 - 4.00 hour	2.00 - 4.00 hour	Dry air dryer
	2.00 - 4.00 hour	2.00 - 4.00 hour	Fresh air dryer (high speed dryer)
	4.00 - 8.00 hour	4.00 - 8.00 hour	Circulating air drying oven (50 % fresh air)
Moisture Content	0.010 - 0.050 %	0.010 - 0.050 %

Descriptive Properties
Availability	North America
Eff. thermal diffusivity (m²/s)	9.1E-08
Feature	Platable
	Release agent
Form	Pellets
Process	Blow Molding
	Injection Molding
	Profile Extrusion
	Sheet Extrusion
	Thermoforming

**
Materials flagged as discontinued () are no longer part of the manufacturer’s standard product line according to our latest information. These materials may be available by special order, in distribution inventory, or reinstated as an active product. Data sheets from materials that are no longer available remain in MatWeb to assist users in finding replacement materials.

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PB09728 / 92568

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