Technical datasheet

Makroblend® KU2-7912

Supplied byCovestro- Last Updated on Apr 3, 2025

Makroblend® KU2-7912 by Covestro is an unreinforced, impact modified, cold stable, polycarbonate (PC) and polybutylene terephthalate (PBT) blend. It is suitable for processing by injection molding. It offers chemical resistance and impact resistance. It provides medium flow, impact strength, and high toughness at low temperatures. It is ideal for painted application and automotive body panels. Makroblend® KU2-7912 complies with UL 94 HB flame rating.
Product family:
Polycarbonate (PC)
Chemical family:
PC + PBT|
Polycarbonate (PC)
Product Type:
Thermoplastics
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Compliance

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Makroblend® KU2-7912 properties

Electrical properties

PropertiesValue & unitTest conditionTest method
Comparative Tracking Index (CTI)0.0 Visible After LoginVisible After LoginVisible After Login
Comparative Tracking Index (CTI)0.0 Visible After LoginVisible After LoginVisible After Login
Dielectric Strength0.0 Visible After LoginVisible After LoginVisible After Login
Dissipation Factor0.0 Visible After LoginVisible After LoginVisible After Login
Dissipation Factor0.0 Visible After LoginVisible After LoginVisible After Login
Surface Resistivity0.0 Visible After LoginVisible After LoginVisible After Login
Volume Resistivity0.0 Visible After LoginVisible After LoginVisible After Login
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Flammability properties

PropertiesValue & unitTest conditionTest method
Flame Rating, UL 940.0 Visible After LoginVisible After LoginVisible After Login
Flame Rating, UL 940.0 Visible After LoginVisible After LoginVisible After Login
Glow Wire Flammability Index (GWFI)0.0 Visible After LoginVisible After LoginVisible After Login
Limiting Oxygen Index (LOI)0.0 Visible After LoginVisible After LoginVisible After Login
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Mechanical properties

PropertiesValue & unitTest conditionTest method
3.5% Flexural Stress0.0 Visible After LoginVisible After LoginVisible After Login
Flexural Modulus0.0 Visible After LoginVisible After LoginVisible After Login
Flexural Strain0.0 Visible After LoginVisible After LoginVisible After Login
Flexural Strength0.0 Visible After LoginVisible After LoginVisible After Login
Impact Strength, Charpy0.0 Visible After LoginVisible After LoginVisible After Login
Impact Strength, Charpy0.0 Visible After LoginVisible After LoginVisible After Login
Impact Strength, Izod0.0 Visible After LoginVisible After LoginVisible After Login
Impact Strength, Izod0.0 Visible After LoginVisible After LoginVisible After Login
Impact Strength, Notched Charpy0.0 Visible After LoginVisible After LoginVisible After Login
Impact Strength, Notched Charpy0.0 Visible After LoginVisible After LoginVisible After Login
Impact Strength, Notched Izod0.0 Visible After LoginVisible After LoginVisible After Login
Impact Strength, Notched Izod0.0 Visible After LoginVisible After LoginVisible After Login
Impact Strength, Notched Izod0.0 Visible After LoginVisible After LoginVisible After Login
Modulus of Elasticity0.0 Visible After LoginVisible After LoginVisible After Login
Nominal Strain at Break0.0 Visible After LoginVisible After LoginVisible After Login
Stress at Break0.0 Visible After LoginVisible After LoginVisible After Login
Yield Strain0.0 Visible After LoginVisible After LoginVisible After Login
Yield Stress0.0 Visible After LoginVisible After LoginVisible After Login
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Other properties

PropertiesValue & unitTest conditionTest method
Density, Bulk0.0 Visible After LoginVisible After LoginVisible After Login
Dielectric Constant0.0 Visible After LoginVisible After LoginVisible After Login
Dielectric Constant0.0 Visible After LoginVisible After LoginVisible After Login
Hardness, Ball Indentation0.0 Visible After LoginVisible After LoginVisible After Login
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Physical properties

PropertiesValue & unitTest conditionTest method
Density0.0 Visible After LoginVisible After LoginVisible After Login
Linear Mold Shrinkage, Flow0.0 Visible After LoginVisible After LoginVisible After Login
Linear Mold Shrinkage, Flow0.0 Visible After LoginVisible After LoginVisible After Login
Melt Volume Flow Rate (MVR)0.0 Visible After LoginVisible After LoginVisible After Login
Viscosity, Melt0.0 Visible After LoginVisible After LoginVisible After Login
Water Absorption at Equilibrium0.0 Visible After LoginVisible After LoginVisible After Login
Water Absorption at Saturation0.0 Visible After LoginVisible After LoginVisible After Login
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Thermal properties

PropertiesValue & unitTest conditionTest method
CTE, Linear, Normal to Flow0.0 Visible After LoginVisible After LoginVisible After Login
CTE, Linear, Parallel to Flow0.0 Visible After LoginVisible After LoginVisible After Login
Deflection Temperature at 0.46 MPa (66 psi)0.0 Visible After LoginVisible After LoginVisible After Login
Deflection Temperature at 1.8 MPa (264 psi)0.0 Visible After LoginVisible After LoginVisible After Login
Melting Point0.0 Visible After LoginVisible After LoginVisible After Login
Thermal Conductivity0.0 Visible After LoginVisible After LoginVisible After Login
Vicat Softening Temperature0.0 Visible After LoginVisible After LoginVisible After Login
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Makroblend® KU2-7912 Processing Guidelines

Injection Molding Processing Guidelines

PropertiesValue & unitTest conditionTest method
Drying TemperatureVisible After LoginVisible After Login
Melt TemperatureVisible After LoginVisible After Login
Moisture ContentVisible After LoginVisible After Login
Mold TemperatureVisible After LoginVisible After Login
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Injection molding Processing Guidelines

PropertiesValue & unitTest conditionTest method
Barrel Front TemperatureVisible After LoginVisible After Login
Barrel Middle TemperatureVisible After LoginVisible After Login
Barrel Nozzle TemperatureVisible After LoginVisible After Login
Barrel Rear TemperatureVisible After LoginVisible After Login
Drying TimeVisible After LoginVisible After Login
Hold PressureVisible After LoginVisible After Login
Injection VelocityVisible After LoginVisible After Login
Peripheral Screw SpeedVisible After LoginVisible After Login
Plastic Back PressureVisible After LoginVisible After Login
Shot-to-Cylinder SizeVisible After LoginVisible After Login
Vent DepthVisible After LoginVisible After Login
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