BASF Ultramid® A3U44G6
Plastic Granules
ULTRAMID A3U44G6
Ultramid® A3U44G6 is a halogen-free flame retardant PA66/6. It is reinforced with 30% glass fiber for high stiffness. This grade delivers a UL 94 V-0 rating at just 0.40 mm. It features a 600 CTI value for superior tracking resistance. The halide-free system protects sensitive electronics from corrosion. Ideal for thin-wall electrical housings and connectors.
Typical property data
Physical Properties
Density: 1440 kg/m³ (ISO 1183)
Water Absorption (saturation, 23°C): 5.2% (similar to ISO 62)
Moisture Absorption (equilibrium, 23°C / 50% r.h.): 1.8% (similar to ISO 62)
Bulk Density (as supplied): ~0.7 g/cm³
Mechanical Properties
Tensile Modulus: 10500 / 7100 MPa (ISO 527-1/-2)
Stress at Break: 135 / 90 MPa (ISO 527-1/-2)
Strain at Break: 3 / 5 % (ISO 527-1/-2)
Flexural Modulus: 10000 / 6800 MPa (ISO 178)
Flexural Strength: 220 / 150 MPa (ISO 178)
Charpy Unnotched Impact Strength (23°C): 65 / 65 kJ/m² (ISO 179/1eU)
Charpy Unnotched Impact Strength (-30°C): 60 / 55 kJ/m² (ISO 179/1eU)
Charpy Notched Impact Strength (23°C): 10 / 13 kJ/m² (ISO 179/1eA)
Charpy Notched Impact Strength (-30°C): 10 / 9 kJ/m² (ISO 179/1eA)
Thermal Properties
Melting Temperature (DSC): 260°C (ISO 11357-1/-3)
Deflection Temperature Under Load (1.8 MPa / HDT A): 225°C (ISO 75-1/-2)
Coefficient of Linear Thermal Expansion (23–55°C, parallel): 24 E-6/K (ISO 11359-1/-2)
Coefficient of Linear Thermal Expansion (23–55°C, normal): 81 E-6/K (ISO 11359-1/-2)
Processing Performance
Relative Permittivity (1 MHz): 3.8 / 4.4 (IEC 62631-2-1)
Dissipation Factor (1 MHz): 130 / 600 E-4 (IEC 62631-2-1)
Volume Resistivity: 1E13 / 1E10 Ohm·m (IEC 62631-3-1)
Surface Resistivity: — / 1E14 Ohm (IEC 62631-3-2)
Comparative Tracking Index (CTI, Solution A): 600 (IEC 60112)
Electric Strength (K20/K20, 60×60×1 mm²): 41 / 39 kV/mm (IEC 60243-1)
Flame Characteristics
Flammability Class (UL 94): V-0 at 0.40 mm, 0.8 mm, and 3.0 mm (ANSI/UL 94)
Glow-Wire Flammability Index (GWFI): 960°C at 0.8 mm (IEC 60695-2-12)
Relative Thermal Index (RTI Elec): 130°C at 0.8 mm / 130°C at 3.0 mm (UL 746B)
Relative Thermal Index (RTI Imp): 115°C at 0.8 mm / 130°C at 3.0 mm (UL 746B)
Relative Thermal Index (RTI Str): 130°C at 0.8 mm / 150°C at 3.0 mm (UL 746B)
Hot Wire Ignition (HWI): 0 (UL 746A)
High Ampere Ignition (HAI): 0 (UL 746A)
Injection Moulding Processing
Melt Temperature Range: 280 – 300°C
Mould Temperature Range: 80 – 90°C
Melt Volume Rate (MVR, 275°C / 5 kg): 30 cm³/10min (ISO 1133)
Moulding Shrinkage (parallel): 0.25% (ISO 294-4)
Moulding Shrinkage (normal): 0.75% (ISO 294-4)
Use & Applications
- Sensitive electronic components