Technical datasheet

Ultramid® A3W

Supplied byBASF- Last Updated on Apr 27, 2026

Ultramid® A3W by BASF is an unreinforced, easy flowing, polyamide 66 (PA66) grade. This grade is processed by injection molding. It displays fast processing properties. It is the material with the greatest hardness, rigidity, abrasion resistance and thermostability. Ultramid® A3W by BASF is suitable for highly stressed technical parts, such as bearings, gear wheels and electrically insulating parts such as terminals and cable connectors.
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Ultramid® A3W properties

Electrical properties

PropertiesValue & unitTest conditionTest method
Comparative Tracking Index (CTI)0.0 Visible After LoginVisible After LoginVisible After Login
Dielectric Constant0.0 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

Flammability properties

PropertiesValue & unitTest conditionTest method
Auto-ignition Temperature0.0 Visible After LoginVisible After LoginVisible After Login
Flame Rating, UL 940.0 Visible After LoginVisible After LoginVisible After Login

Mechanical properties

PropertiesValue & unitTest conditionTest method
50% Modulus0.0 Visible After LoginVisible After LoginVisible After Login
Elongation at Break0.0 Visible After LoginVisible After LoginVisible After Login
Elongation at Break, Nominal0.0 Visible After LoginVisible After LoginVisible After Login
Flexural Modulus0.0 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
Tensile Modulus0.0 Visible After LoginVisible After LoginVisible After Login
Tensile Strength at Break0.0 Visible After LoginVisible After LoginVisible After Login

Other properties

PropertiesValue & unitTest conditionTest method
Density, Bulk0.0 Visible After LoginVisible After LoginVisible After Login

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
Linear Mold Shrinkage, Flow0.0 Visible After LoginVisible After LoginVisible After Login
Linear Mold Shrinkage, Transverse0.0 Visible After LoginVisible After LoginVisible After Login
Melt Volume Flow Rate (MVR)0.0 Visible After LoginVisible After LoginVisible After Login
Moisture Absorption at Equilibrium0.0 Visible After LoginVisible After LoginVisible After Login
Viscosity, Reduced0.0 Visible After LoginVisible After LoginVisible After Login
Water Absorption at Saturation0.0 Visible After LoginVisible After LoginVisible After Login

Thermal properties

PropertiesValue & unitTest conditionTest method
CTE, Linear, Parallel to Flow0.0 Visible After LoginVisible After LoginVisible After Login
Decomposition Temperature0.0 Visible After LoginVisible After LoginVisible After Login
Heat Deflection Temperature (HDT), Unannealed0.0 Visible After LoginVisible After LoginVisible After Login
Heat Deflection Temperature (HDT), Unannealed0.0 Visible After LoginVisible After LoginVisible After Login
Maximum Service Temperature, Air0.0 Visible After LoginVisible After LoginVisible After Login
Melting Point0.0 Visible After LoginVisible After LoginVisible After Login
Specific Heat Capacity0.0 Visible After LoginVisible After LoginVisible After Login
Thermal Conductivity0.0 Visible After LoginVisible After LoginVisible After Login
UL, RTI0.0 Visible After LoginVisible After LoginVisible After Login

Ultramid® A3W Processing Guidelines

Injection Molding Processing Guidelines

PropertiesValue & unitTest conditionTest method
Compression TemperatureVisible After LoginVisible After Login
Drying TemperatureVisible After LoginVisible After Login
Drying TimeVisible After LoginVisible After Login
Feed TemperatureVisible After LoginVisible After Login
Hopper Throat TemperatureVisible After LoginVisible After Login
Melt TemperatureVisible After LoginVisible After Login
Metering Zone TemperatureVisible After LoginVisible After Login
Moisture ContentVisible After LoginVisible After Login
Mold TemperatureVisible After LoginVisible After Login
Nozzle TemperatureVisible After LoginVisible After Login
Peripheral screw speedVisible After LoginVisible After Login

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