Covestro Bayblend® W85 XF PC/ASA
Plastic Granules
Bayblend® W85 XF PC/ASA Resin Weather Resistant Grade
Covestro Bayblend® W85 XF is a PC/ASA blend engineered for exceptional weather resistance, low-temperature toughness (-30°C), and reliable heat stability (Vicat 132°C). Perfect for outdoor and technical parts needing durability without compromising processability.
Associated Documents
ISO TDS
Typical property data
Physical Properties (Rheological)
- Melt Volume-Flow Rate: 27 cm³/10 min at 260 °C/5 kg (ISO 1133)
- Melt Viscosity: 225 Pa·s at 1000 s⁻¹/260 °C (ISO 11443-A)
- Molding Shrinkage (Parallel): 0.55–0.75% (ISO 2577)
- Molding Shrinkage (Normal): 0.55–0.75% (ISO 2577)
Mechanical Properties (23 °C/50 % r. h.)
- Tensile Modulus: 2450 MPa (ISO 527-1,-2)
- Yield Stress: 63 MPa (ISO 527-1,-2)
- Yield Strain: 5.0% (ISO 527-1,-2)
- Stress at Break: 62 MPa (ISO 527-1,-2)
- Strain at Break: > 50% (ISO 527-1,-2)
- Izod Notched Impact Strength (23 °C): 45 kJ/m² (ISO 180/A)
- Izod Notched Impact Strength (-20 °C): 15 kJ/m² (ISO 180/A)
Thermal Properties
- Deflection Temperature Under Load (1.80 MPa): 109 °C (ISO 75-1,-2)
- Deflection Temperature Under Load (0.45 MPa): 127 °C (ISO 75-1,-2)
- Vicat Softening Temperature (50 N, 50 °C/h): 130 °C (ISO 306)
- Vicat Softening Temperature (50 N, 120 °C/h): 132 °C (ISO 306)
- Coefficient of Linear Thermal Expansion (Parallel & Normal, 23–55 °C): 0.7 × 10⁻⁴/K (ISO 11359-1,-2)
- Burning Behavior: UL 94 HB (UL 94)
- Oxygen Index: 25% (ISO 4589-2)
Electrical Properties (23 °C/50 % r. h.)
- Relative Permittivity (100 Hz): 3.1 (IEC 60250)
- Relative Permittivity (1 MHz): 2.8 (IEC 60250)
- Dissipation Factor (100 Hz): 25 × 10⁻⁴ (IEC 60250)
- Dissipation Factor (1 MHz): 105 × 10⁻⁴ (IEC 60250)
- Volume Resistivity: 1 × 10¹⁴ Ohm·m (IEC 62631-3-1)
- Surface Resistivity: 1 × 10¹⁶ Ohm (IEC 62631-3-2)
- Electrical Strength: 35 kV/mm (IEC 60243-1)
- Comparative Tracking Index (CTI): 225 (IEC 60112)
Other Properties (23 °C)
- Water Absorption (Saturation): 0.5% (ISO 62)
- Water Absorption (Equilibrium): 0.2% (ISO 62)
- Density: 1160 kg/m³ (ISO 1183-1)
Processing and Drying Conditions
- Melt Temperature: 260–280 °C (Standard: 270 °C)
- Barrel Temperatures:
- Rear: 230–240 °C
- Middle: 235–245 °C
- Front: 240–270 °C
- Nozzle: 265–275 °C
- Mold Temperature: 70–90 °C
- Hold Pressure (% of Injection Pressure): 50–75%
- Plastic Back Pressure: 50–150 bar
- Peripheral Screw Speed: 0.05–0.2 m/s
- Shot-to-Cylinder Size: 30–70%
- Drying Temperature: 95–110 °C
- Drying Time: 4 hours
- Moisture Content (Max): ≤ 0.01%
- Vent Depth: 0.025–0.075 mm
Features & Benefits
Weather Resistance You Can Trust
With enhanced UV/weather stability, Bayblend® W85 XF withstands decades of sun, rain, and temperature swings—ideal for automotive trims, charging stations, and outdoor enclosures.
Cold-Impact Toughness
It delivers 45 kJ/m² notched impact strength at -30°C, ensuring parts stay crack-free in freezing climates—critical for automotive grilles and industrial housings.
Heat & Processing Efficiency
High Vicat softening (132°C) and optimized melt flow (27 cm³/10min) enable fast, stable injection molding—reducing cycle times and warpage risks.
Use & Applications
- Automotive: Grilles, mirror housings, sensor covers.
- Electronics: EV charging ports, outdoor enclosures.
- Consumer Goods: Garden tools, sports equipment.
- Industrial: HVAC components, solar panel frames.