BASF Ultramid® A3WG7 HP BK20560
Plastic Granules
ULTRAMID A3WG7 HP BK20560 35% Glass Fibre Black Granules
Ultramid® A3WG7 HP BK20560 is BASF’s 35% glass fibre reinforced PA66. It is heat-aging stabilized for long service at high temperatures. It delivers 11,200 MPa tensile modulus and 240°C HDT/A. It flows well, moulds cleanly, and meets FMVSS 302. Ideal for under-hood, electrical, and industrial parts.
Typical property data
Physical Properties
- Polymer Abbreviation: PA66-GF35
- Density: 1416 kg/m³ (ISO 1183)
- Viscosity Number (0.5% in 96% H₂SO₄): 120 cm³/g (ISO 307, 1157, 1628)
- Moisture Absorption, Equilibrium (23°C / 50% r.h.): 1.4% (similar to ISO 62)
- Water Absorption, Saturation in Water (23°C): 5.7% (similar to ISO 62)
- Bulk Density (Granules): approx. 0.7 g/cm³
Mechanical Properties
- Tensile Modulus: 11,200 / 7,500 MPa (ISO 527-1/-2) — high stiffness for structural loading
- Stress at Break: 200 / 130 MPa (ISO 527-1/-2)
- Strain at Break: 2.9 / 4.2 % (ISO 527-1/-2)
- Tensile Creep Modulus (1,000 h, strain ≤ 0.5%, 23°C): — / 5,600 MPa (ISO 899-1)
- Flexural Modulus: 10,300 / 7,100 MPa (ISO 178)
- Flexural Strength: 300 / 200 MPa (ISO 178) — outstanding load-bearing capability
- Charpy Unnotched Impact Strength (23°C): 80 / 88 kJ/m² (ISO 179/1eU)
- Charpy Unnotched Impact Strength (-30°C): 65 / 60 kJ/m² (ISO 179/1eU)
- Charpy Notched Impact Strength (23°C): 11 / 13 kJ/m² (ISO 179/1eA)
- Charpy Notched Impact Strength (-30°C): 9.7 / 9 kJ/m² (ISO 179/1eA)
Thermal Properties
- Melting Temperature (DSC): 260 °C (ISO 11357-1/-3)
- Deflection Temperature Under Load, HDT/A (1.8 MPa): 240 °C (ISO 75-1/-2)
- Deflection Temperature Under Load, HDT/B (0.45 MPa): 260 °C (ISO 75-1/-2)
Electrical Properties
- Relative Permittivity (1 MHz): 3.9 / 4.6 (IEC 62631-2-1)
- Dissipation Factor (1 MHz): 163 / 780 × 10⁻⁴ (IEC 62631-2-1)
- Volume Resistivity: 4 × 10¹² / 8 × 10⁸ Ohm·m (IEC 62631-3-1)
- Surface Resistivity: — / 1 × 10¹⁴ Ohm (IEC 62631-3-2)
- Comparative Tracking Index (CTI, test liquid A): — / 425 (IEC 60112) — high tracking resistance for electrical housings
- Electric Strength K20/P50 (d = 0.6–0.8 mm): 40 / 35 kV/mm (IEC 60243-1)
- Electric Strength K20/K20 (60×60×1 mm³): 44 / 39 kV/mm (IEC 60243-1)
Flame Characteristics
- Automotive Materials Flammability (Thickness ≥ 1 mm): Passed (ISO 3795 / FMVSS 302)
Processing Parameters
- MVR (275 °C / 5 kg): 55 cm³/10 min (ISO 1133)
- Melt Temperature, Injection Moulding/Extrusion: 280 – 300 °C
- Recommended Melt Temperature (Injection Moulding): 290 °C
- Mould Temperature, Injection Moulding: 80 – 90 °C
- Recommended Mould Temperature: 80 °C
- Moulding Shrinkage, Constrained: 0.3 % (Test box, central gating, TM = 290 °C / TW = 80 °C)
- Moulding Shrinkage (Parallel): 0.30 % (ISO 294-4)
- Moulding Shrinkage (Normal): 0.90 % (ISO 294-4)
- Flowability, Spiral Flow Length (d = 2.0 mm): 50 cm (BASF method)
- Pre-Drying Temperature: 80 °C
- Pre-Drying Time: 4 h
Use & Applications
- for under-hood, electrical, and industrial parts