BASF ULTRAMID® A3HG6 HR BK23591
Plastic Granules
ULTRAMID A3HG6 HR BK23591
Ultramid® A3HG6 HR BK23591 is a 30% glass-fibre reinforced PA66 from BASF. It offers enhanced hydrolysis resistance for hot coolant contact. Tensile modulus reaches 10,000 MPa. HDT A hits 250 °C. Ideal for automotive cooling circuits and under-the-hood parts. BMBcert™ and Ccycled™ options available.
Typical property data
Physical Properties
- Polymer Abbreviation: PA66-GF30
- Glass Fibre Content: 30% (reinforced)
- Density: 1,370 kg/m³ (ISO 1183)
- Viscosity Number (0.5% in 96% H₂SO₄): 145 cm³/g (ISO 307 / 1157 / 1628)
- Moisture Absorption, equilibrium 23 °C / 50% r.h.: 1.5 – 1.9 % (similar to ISO 62)
- Water Absorption, saturation in water at 23 °C: 5.2 – 5.8 % (similar to ISO 62)
- Moulding Shrinkage, parallel: 0.47 % (ISO 294-4)
- Moulding Shrinkage, normal: 1.15 % (ISO 294-4)
- Moulding Shrinkage, constrained: 0.55 %
- Bulk Density (granules): ≈ 0.7 g/cm³
Mechanical Properties
- Tensile Modulus: 10,000 / 6,800 MPa (ISO 527-1/-2)
- Stress at Break: 190 / 120 MPa (ISO 527-1/-2)
- Strain at Break: 3.2 / 5.4 % (ISO 527-1/-2)
- Tensile Creep Modulus, 1,000 h, strain ≤ 0.5%, 23 °C: — / 5,300 MPa (ISO 899-1)
- Flexural Modulus: 8,700 / 5,800 MPa (ISO 178)
- Flexural Strength: 275 / 200 MPa (ISO 178)
- Charpy Unnotched Impact Strength (23 °C): 80 / 93 kJ/m² (ISO 179/1eU)
- Charpy Unnotched Impact Strength (−30 °C): 60 / 60.7 kJ/m² (ISO 179/1eU)
- Charpy Notched Impact Strength (23 °C): 10.4 / 13 kJ/m² (ISO 179/1eA)
- Charpy Notched Impact Strength (−30 °C): 12 / 6.8 kJ/m² (ISO 179/1eA)
- Izod Notched Impact Strength (23 °C): 13 / 20 kJ/m² (ISO 180/A)
- Izod Notched Impact Strength (−30 °C): 9 kJ/m² (ISO 180/A)
Thermal Properties
- Melting Temperature (DSC): 260 °C (ISO 11357-1/-3)
- Deflection Temperature Under Load, 1.8 MPa (HDT A): 250 °C (ISO 75-1/-2)
- Deflection Temperature Under Load, 0.45 MPa (HDT B): 260 °C (ISO 75-1/-2)
- Max. Service Temperature (short-cycle operation): 240 °C
- Coefficient of Linear Thermal Expansion, longitudinal (23–55 °C): 27 × 10⁻⁶ /K (ISO 11359-1/-2)
- Coefficient of Linear Thermal Expansion, transverse (23–55 °C): 106 × 10⁻⁶ /K (ISO 11359-1/-2)
- Thermal Conductivity: 0.34 W/(m·K) (DIN 52612-1)
- Specific Heat Capacity: 1,500 J/(kg·K)
Electrical Properties
- Relative Permittivity (1 MHz): 3.5 / 5.6 (IEC 62631-2-1)
- Dissipation Factor (1 MHz): — / 3,000 × 10⁻⁴ (IEC 62631-2-1)
- Dissipation Factor (100 Hz): 140 / 2,300 × 10⁻⁴ (IEC 62631-2-1)
- Volume Resistivity: 1 × 10¹³ / 1 × 10¹⁰ Ohm·m (IEC 62631-3-1)
- Surface Resistivity: 1 × 10¹² / 1 × 10¹⁰ Ohm (IEC 62631-3-2)
- Comparative Tracking Index (CTI, test liquid A): — / 600 (IEC 60112)
- Electric Strength, K20/P50, d = 0.6–0.8 mm: 90 / 75 kV/mm (IEC 60243-1)
Flame Characteristics
- UL 94 Flammability Rating at 1.5 mm: HB (IEC 60695-11-10)
- UL 94 Flammability Rating at 3.05 mm: HB (UL-94 / IEC 60695)
- Oxygen Index: 24 % (ISO 4589-1/-2)
- Automotive Flammability (Thickness ≥ 1 mm): Passed (ISO 3795 / FMVSS 302)
Injection Moulding Processing
- Melt Volume-Flow Rate, MVR 275 °C / 5 kg: 20 cm³/10 min (ISO 1133)
- Melt Temperature Range: 280 – 300 °C
- Recommended Melt Temperature: 290 °C
- Mould Temperature Range: 80 – 90 °C
- Recommended Mould Temperature: 80 °C
- Pre-Drying Temperature: 80 °C
- Pre-Drying Time: 4 h
Use & Applications
- automotive cooling circuit