Covestro Bayblend® M750 RE CQ PC/ABS
Plastic Granules
Bayblend® M750 RE CQ PC/ABS Resin
Bayblend M750 RE CQ is a partially bio-circular PC+ABS blend offering high impact strength, excellent thermal properties (Vicat 126°C), and compliance with ISO 10993-1 for medical applications. This sustainable, mass-balanced grade is ideal for demanding technical components.
Associated Documents
ISO TDS
Typical property data
Physical Properties (Rheological)
- Melt volume-flow rate: 11 cm³/10 min (260 °C/5 kg, ISO 1133)
- Melt viscosity: 265 Pa·s (1000 s⁻¹/260 °C, ISO 11443-A)
- Molding shrinkage, parallel: 0.7 – 0.9% (60x60x2 mm³/260 °C/MT 80 °C/500 bar, ISO 294-4)
- Molding shrinkage, normal: 0.7 – 0.9% (60x60x2 mm³/260 °C/MT 80 °C/500 bar, ISO 294-4)
Mechanical Properties (23 °C/50% r. h.)
- Tensile modulus: 2000 MPa (1 mm/min, ISO 527-1,-2)
- Yield stress: 47 MPa (50 mm/min, ISO 527-1,-2)
- Yield strain: 4.8% (50 mm/min, ISO 527-1,-2)
- Nominal strain at break: > 50% (50 mm/min, ISO 527-1,-2)
- Izod impact strength:
- Unnotched: N (non-break, 23 °C, ISO 180/U)
- Notched (23 °C): 45 kJ/m² (ISO 180/A)
- Notched (-30 °C): 35 kJ/m² (ISO 180/A)
Thermal Properties
- Temperature of deflection under load, 1.80 MPa: 104 °C (ISO 75-1,-2)
- Temperature of deflection under load, 0.45 MPa: 127 °C (ISO 75-1,-2)
- Vicat softening temperature: 126 °C (50 N; 120 °C/h, ISO 306)
- Coefficient of linear thermal expansion:
- Parallel (23 to 55 °C): 0.85 × 10⁻⁴/K (ISO 11359-1,-2)
- Normal (23 to 55 °C): 0.85 × 10⁻⁴/K (ISO 11359-1,-2)
Electrical Properties (23 °C/50% r. h.)
- Relative permittivity:
- 100 Hz: 3.0 (IEC 60250)
- 1 MHz: 2.9 (IEC 60250)
- Dissipation factor:
- 100 Hz: 25 × 10⁻⁴ (IEC 60250)
- 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 (1 mm, IEC 60243-1)
- Comparative tracking index (CTI): 325 (Solution A, IEC 60112)
Other Properties (23 °C)
- Water absorption (saturation value): 0.6% (Water at 23 °C, ISO 62)
- Water absorption (equilibrium value): 0.2% (23 °C; 50% r. h., ISO 62)
- Density: 1120 kg/m³ (ISO 1183-1)
Processing and Drying Conditions
- Melt temperatures: 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 temperatures: 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%
- Dry Air Drying Conditions:
- Drying temperature: 95 – 110 °C
- Drying time: 4 h
- Max. moisture content: ≤ 0.02%
- Vent depth: 0.025 – 0.075 mm
Features & Benefits
Sustainable, Mass-Balanced Material
This grade uses attributed renewable resources, reducing your product’s carbon footprint and supporting corporate sustainability goals without compromising on performance or processability.
Superior Impact Resistance
Its excellent notched impact strength (45 kJ/m²) ensures high durability and resistance to cracking, which is critical for robust housings and components that must withstand rough handling.
High Thermal Stability
With a Vicat softening temperature of 126°C, this material maintains structural integrity when exposed to heat, making it suitable for applications requiring sterilization or that operate in warm environments.
Use & Application
- Injection Molding of high-precision technical parts.
- Medical Devices and equipment housings where durability and regulatory compliance are paramount.