BASF Ultramid® A4H R01
Plastic Granules
ULTRAMID A4H R01 High heat-aging Resistant Medium Viscosity
Ultramid® A4H R01 is a heat-aging resistant PA66 from BASF. It offers medium viscosity for smooth injection moulding. Key data: 260°C melting point, 200°C HDT B, CTI 600V, and UL 94 V-2. Built for highly stressed parts like bearing cages, gear-wheels, coil formers, and cable connectors.
Typical property data
Physical Properties
- Density: 1130 kg/m³ (ISO 1183)
- Viscosity Number (0.5% in 96% H₂SO₄): 170 cm³/g (ISO 307 / 1157 / 1628)
- Water Absorption, Saturation in Water at 23°C: 8 – 9 % (similar to ISO 62)
- Moisture Absorption, Equilibrium 23°C / 50% r.h.: 2.5 – 3.1 % (similar to ISO 62)
- Bulk Density (Granules): approx. 0.7 g/cm³
Mechanical Properties
- Tensile Modulus: 3000 / 1200 MPa (ISO 527-1/-2)
- Yield Stress: 80 / 50 MPa (ISO 527-1/-2)
- Yield Strain: 4 / 20 % (ISO 527-1/-2)
- Strain at Break: 20 / >50 % (ISO 527-1/-2)
- Flexural Modulus: 3000 / 1200 MPa (ISO 178)
- Charpy Unnotched Impact Strength, 23°C: N / N (No break) (ISO 179/1eU)
- Charpy Unnotched Impact Strength, -30°C: 100 / – kJ/m² (ISO 179/1eU)
- Charpy Notched Impact Strength, 23°C: 5.4 / 20 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): 70 °C (ISO 75-1/-2)
- Deflection Temperature Under Load, 0.45 MPa (HDT B): 200 °C (ISO 75-1/-2)
- Coefficient of Linear Thermal Expansion, 23°C – 55°C (parallel): 98 × 10⁻⁶ /K (ISO 11359-1/-2)
Electrical Properties
- Relative Permittivity (1 MHz): 3.2 / 5 (IEC 62631-2-1)
- Dissipation Factor (1 MHz): 250 / 2000 × 10⁻⁴ (IEC 62631-2-1)
- Volume Resistivity: 1 × 10¹³ / 1 × 10¹⁰ Ohm·m (IEC 62631-3-1)
- Surface Resistivity: – / 1 × 10¹³ Ohm (IEC 62631-3-2)
- Comparative Tracking Index (CTI), Solution A: 600 V (IEC 60112)
- Dielectric Strength (UL): 18 kV/mm
- High-Voltage Arc Tracking Rate (HVTR): 0
- High Volt, Low Current Arc Resistance (D495): 5
Flame Characteristics
- Flammability Rating @ 0.75 mm: V-2 (IEC 60695-11-10 / UL 94)
- Flammability Rating @ 1.5 mm: V-2 (IEC 60695-11-10 / UL 94)
- Flammability Rating @ 3.0 mm: V-2 (IEC 60695-11-10 / UL 94)
- Glow-Wire Flammability Index (GWFI) @ 0.8 mm: 850 °C (IEC 60695-2-12)
- Hot Wire Ignition (HWI) @ 0.75 / 1.5 mm: 4 (UL 746A)
- Hot Wire Ignition (HWI) @ 3.0 mm: 3 (UL 746A)
- High-Amp Arc Ignition (HAI): 0 (UL 746A)
Processing Parameters
- Melt Volume Rate (MVR), 275 °C / 5 kg: 60 cm³/10 min (ISO 1133)
- Melt Temperature, Injection Moulding / Extrusion: 280 – 300 °C
- Mould Temperature, Injection Moulding: 60 – 80 °C
- Molding Shrinkage, Model-Housing 1.5 mm: 1.1 %
- Molding Shrinkage (Parallel): 1.40 % (ISO 294-4)
- Molding Shrinkage (Normal): 1.80 % (ISO 294-4)
- Pre-drying: Required prior to processing (per BASF recommendation)
Use & Applications
- Bearing Cages
- Gear-Wheels
- Coil Formers (Bobbins)
- Cable Connectors
- Additional Highly Stressed Engineering Parts