BASF Ultramid® A3WG8 BK20560
Plastic Granules
BASF ULTRAMID A3WG8 BK20560 PA66-GF40 Heat Aging Resistance
Ultramid® A3WG8 BK20560 is a 40% glass fiber-reinforced Nylon Polyamide 66 resin offering exceptional heat resistance, high stiffness, superior strength, and outstanding oil resistance. Engineered for durability, it’s the preferred choice for demanding industrial and automotive components.
Typical property data
Physical Properties
- Density: 1460 kg/m³ (ISO 1183)
- Moisture Absorption (Equilibrium, 23°C/50% RH): 1.3–1.7% (similar to ISO 62)
- Water Absorption (Saturation at 23°C): 4.4–5% (similar to ISO 62)
Mechanical Properties
- Tensile Modulus:
- Dry: 13000 MPa (ISO 527-1/-2)
- Conditioned: 8500 MPa
- Stress at Break:
- Dry: 220 MPa (ISO 527-1/-2)
- Conditioned: 145 MPa
- Strain at Break:
- Dry: 3% (ISO 527-1/-2)
- Conditioned: 5%
- Flexural Modulus:
- Dry: 12200 MPa (ISO 178)
- Conditioned: 8400 MPa
- Flexural Strength:
- Dry: 330 MPa (ISO 178)
- Conditioned: 230 MPa
Impact Properties
- Charpy Unnotched Impact Strength (23°C): 100 kJ/m2100 \, \text{kJ/m}^2 (ISO 179/1eU)
- Charpy Notched Impact Strength (23°C):
- 13 kJ/m² Dry (ISO 179/1eA)
- 17 kJ/m² Conditioned
- Izod Notched Impact Strength (23°C): 14 kJ/m² Dry (ISO 180/A)
Thermal Properties
- Melting Temperature (DSC): 260°C (ISO 11357-1/-3)
- Deflection Temperature Under Load:
- HDT A (1.8 MPa): 250°C (ISO 75-1/-2)
- HDT B (0.45 MPa): 260°C
- Maximum Short-Cycle Service Temperature: 240°C
- Coefficient of Linear Thermal Expansion:
- Longitudinal: 23 (E-6/K) (ISO 11359-1/-2)
- Transverse: 86 (E-6/K)
Electrical Properties
- Relative Permittivity (1 MHz):
- Dry: 4 (IEC 62631-2-1)
- Conditioned: 4.7
- Dissipation Factor (1 MHz):
- Dry: 170 E-4 (IEC 62631-2-1)
- Conditioned: 830 E-4
- Volume Resistivity:
- Dry: 3E12 Ohm*m (IEC 62631-3-1)
- Conditioned: 5E10 Ohm*m
- Comparative Tracking Index (CTI): 425 (IEC 60112)
- Electric Strength: 40 kV/mm Dry (IEC 60243-1)
Flame Characteristics
- Flammability for Automotive Materials (thickness ≥ 1 mm): Passed (ISO 3795, FMVSS 302)
Processing Guide
- Melt Temperature (Injection Molding/Extrusion): 280°C−300°C
- Mold Temperature (Injection Molding): 80°C−90°C
- Pre-drying Temperature: 80°C
- Pre-drying Time: 4 hours
- Molding Shrinkage:
- Parallel: 0.35% (ISO 294-4)
- Normal: 1.02% (ISO 294-4)
Features & Benefits
Exceptional Heat Resistance
This material withstands prolonged exposure to extreme temperatures up to 240°C, making it ideal for automotive and industrial applications requiring thermal stability, such as under-the-hood components.
High Stiffness and Strength
Reinforced with 40% glass fiber, Ultramid® A3WG8 BK20560 excels in delivering superior mechanical properties. It resists deformation under heavy loads, making it perfect for structural components like gear wheels and fuel distributors.
Excellent Oil and Chemical Resistance
The polyamide resin resists aggressive automotive fluids, including oils and greases. This feature extends product lifespans, reduces maintenance, and ensures reliability in gearshift housings and solenoid valve covers.
Use & Applications
- Automotive Industry: Gearshift components, fuel distributors, and under-the-hood components resistant to heat and oil.
- Industrial Appliances: High-strength housings for solenoid valves, cable attachments, and precision engineering parts.
- Consumer Goods: Durable and heat-resistant components in power tools, home appliances, and other high-performing devices.