BASF Ultramid® B3WG6 GPX BK23238
Plastic Granules
ULTRAMID B3WG6 GPX BK23238 Heat ageing Resistant
Ultramid® B3WG6 GPX BK23238 is a 30% glass-fiber reinforced PA6 grade from BASF. Engineered for high heat resistance, it delivers outstanding long-term burst strength. Ideal for air intake manifolds, it ensures dimensional stability under thermal stress.
Typical property data
Physical Properties
Density: 1350 kg/m³ (ISO 1183)
Viscosity Number (0.5% in 96% H₂SO₄): 150 cm³/g (ISO 307, 1157, 1628)
Water Absorption (saturation at 23°C): 6.3 – 6.9% (similar to ISO 62)
Moisture Absorption (equilibrium 23°C / 50% r.h.): 2.2 – 2.5% (similar to ISO 62)
Bulk Density (as supplied): approx. 0.7 g/cm³
Mechanical Properties
Tensile Modulus (dry / conditioned): 9800 / 5400 MPa (ISO 527-1/-2)
Stress at Break (dry / conditioned): 185 / 110 MPa (ISO 527-1/-2)
Strain at Break (dry / conditioned): 3.5 / 8% (ISO 527-1/-2)
Tensile Creep Modulus (1000h, strain ≤0.5%, 23°C): 4100 MPa (ISO 899-1)
Flexural Modulus (dry / conditioned): 9000 / 5200 MPa (ISO 178)
Flexural Strength (dry / conditioned): 280 / 165 MPa (ISO 178)
Charpy Unnotched Impact Strength (23°C, dry / conditioned): 95 / 105 kJ/m² (ISO 179/1eU)
Charpy Unnotched Impact Strength (-30°C, dry / conditioned): 85 / 95 kJ/m² (ISO 179/1eU)
Charpy Notched Impact Strength (23°C, dry / conditioned): 13 / 22 kJ/m² (ISO 179/1eA)
Charpy Notched Impact Strength (-30°C, dry / conditioned): 10 / 11 kJ/m² (ISO 179/1eA)
Izod Notched Impact Strength (23°C, dry / conditioned): 17 / 22 kJ/m² (ISO 180/A)
Thermal Properties
Melting Temperature (DSC): 220°C (ISO 11357-1/-3)
Deflection Temperature Under Load – HDT A (1.8 MPa): 200°C (ISO 75-1/-2)
Deflection Temperature Under Load – HDT B (0.45 MPa): 220°C (ISO 75-1/-2)
Temperature Index (50% loss of tensile strength after 5,000h): 184°C (IEC 60216)
Temperature Index (50% loss of tensile strength after 20,000h): 164°C (IEC 60216)
Coefficient of Linear Thermal Expansion – Longitudinal (23-55°C): 23 × 10⁻⁶/K (ISO 11359-1/-2)
Coefficient of Linear Thermal Expansion – Transverse (23-55°C): 90 × 10⁻⁶/K (ISO 11359-1/-2)
Electrical Properties
Relative Permittivity (1 MHz, dry / conditioned): 4.1 / 5.4 (IEC 62631-2-1)
Dissipation Factor (1 MHz, dry / conditioned): 201 / 1340 × 10⁻⁴ (IEC 62631-2-1)
Volume Resistivity (dry / conditioned): 1×10⁹ / 1×10⁸ Ω·m (IEC 62631-3-1)
Surface Resistivity (conditioned): 5×10¹² Ω (IEC 62631-3-2)
Comparative Tracking Index – CTI (Test Liquid A, dry / conditioned): 375 / 375 (IEC 60112)
Electric Strength (K20/K20, 60×60×1 mm³, dry / conditioned): 47 / 29 kV/mm (IEC 60243-1)
Flammability Characteristics
Automotive Flammability (Thickness ≥ 1 mm): Passed (+) (ISO 3795 / FMVSS 302)
Processing Parameters
Melt Volume-Flow Rate – MVR (275°C / 5 kg): 20 cm³/10min (ISO 1133)
Melt Temperature (Injection Moulding): 270 – 290°C
Mould Temperature (Injection Moulding): 80 – 90°C
Pre-Drying Temperature: 80°C
Pre-Drying Time: 4 hours
Moulding Shrinkage (Parallel): 0.27% (ISO 294-4)
Moulding Shrinkage (Normal): 0.62% (ISO 294-4)
Use & Applications
- Plastic air intake manifolds with excellent long-term burst strength retention