Covestro Makrolon® 8025 PC Resin
Plastic Granules
Makrolon 8025 PC Resin 20% Glass Fiber-reinforced grade
Makrolon 8025 is a 20% glass fiber-reinforced polycarbonate resin with high viscosity and easy-release properties. Ideal for precision parts, it offers exceptional dimensional stability and MVR of 6.0 cm³/10 min (300°C/1.2 kg). Available exclusively in opaque colors for extrusion and injection molding.
Associated Documents
ISO TDS
Typical property data
Physical Properties (Rheological)
- Melt volume-flow rate (MVR): 6.0 cm³/10 min (300 °C/1.2 kg, ISO 1133)
- Melt mass-flow rate (MFR): 6.5 g/10 min (300 °C/1.2 kg, ISO 1133)
- Molding shrinkage (parallel): 0.55% (60x60x2 mm³, 500 bar, ISO 294-4)
- Molding shrinkage (normal): 0.35% (60x60x2 mm³, 500 bar, ISO 294-4)
Mechanical Properties (23 °C, 50% r.h.)
- Tensile modulus: 4000 MPa (1 mm/min, ISO 527-1,-2)
- Yield stress: 58 MPa (50 mm/min, ISO 527-1,-2)
- Yield strain: 3.5% (50 mm/min, ISO 527-1,-2)
- Tensile creep modulus:
- 1 h: 3700 MPa (ISO 899-1)
- 1000 h: 3500 MPa (ISO 899-1)
- Flexural modulus: 3700 MPa (2 mm/min, ISO 178)
- Flexural strength: 100 MPa (2 mm/min, ISO 178)
- Charpy impact strength:
- 23 °C: 55 kJ/m² (ISO 179/1eU)
- -30 °C: 65 kJ/m² (ISO 179/1eU)
- Charpy notched impact strength (23 °C, 3 mm): 12 kJ/m² (ISO 21305/ISO 179/1eA)
Thermal Properties
- Deflection temperature under load (1.8 MPa): 134 °C (ISO 75-1,-2)
- Vicat softening temperature (50 N, 50 °C/h): 146 °C (ISO 306)
- Coefficient of linear thermal expansion:
- Parallel: 0.45 × 10⁻⁴/K (23 to 55 °C, ISO 11359-1,-2)
- Normal: 0.55 × 10⁻⁴/K (23 to 55 °C, ISO 11359-1,-2)
- Burning behavior: UL 94 V-2 (1.5 mm, UL 94)
Electrical Properties (23 °C, 50% r.h.)
- Relative permittivity:
- 100 Hz: 3.3 (IEC 60250)
- 1 MHz: 3.3 (IEC 60250)
- Dissipation factor:
- 100 Hz: 10 × 10⁻⁴ (IEC 60250)
- 1 MHz: 90 × 10⁻⁴ (IEC 60250)
- Volume resistivity: 1×10141 \times 10^{14} Ohm·m (IEC 62631-3-1)
- Surface resistivity: 1×10161 \times 10^{16} Ohm (IEC 62631-3-2)
- Electrical strength: 36 kV/mm (1 mm, IEC 60243-1)
Other Properties (23 °C)
- Density: 1340 kg/m³ (ISO 1183-1)
- Water absorption:
- Saturation value: 0.24% (ISO 62)
- Equilibrium value: 0.10% (23 °C, 50% r.h., ISO 62)
Processing and Drying Conditions
- Melt temperature (injection molding): 280–320 °C
- Mold temperature (injection molding): 80–120 °C
- Drying temperature: 120 °C (dry air)
- Drying time: 2–3 h
- Moisture content (max): ≤ 0.02%
Features & Benefits
Precision & Dimensional Stability
With ultra-low molding shrinkage (0.3–0.45%), Makrolon pc 8025 ensures tight-tolerance components, reducing warpage and post-processing for complex geometries like gears or connectors.
High Strength & Rigidity
It boasts 58 MPa yield stress and 4,000 MPa tensile modulus, delivering robust mechanical performance for structural parts exposed to heavy loads, such as automotive brackets or industrial housings.
Thermal & Electrical Resilience
It survives 134°C under load (1.8 MPa) and achieves CTI 175, making this Polycarbonate Makrolon 8025 ideal for electrical enclosures or heat-resistant components in appliances.
Use & Applications
- Injection Molding: Automotive sensor housings, power tool components, and industrial fasteners
- Extrusion: Structural profiles for machinery guards or electrical conduits
- Precision Parts: Medical device gears, drone motor mounts, and robotics joints