Covestro Makrolon® AX2677 PC Resin
Plastic Granules
Makrolon AX2677 Polycarbonate Granules Injection Molding Grade
Covestro Makrolon® AX2677 is a UV-stabilized, medium-viscosity polycarbonate resin engineered for high-gloss automotive surfaces. With easy-release properties and exclusive black coloration, it delivers optical-quality finishes for demanding exterior applications via injection molding.
Associated Documents
ISO TDS
Typical property data
Physical Properties (Rheological)
- Melt Volume-Flow Rate: 12 cm³/10 min (ISO 1133, 300 °C/1.2 kg)
- Melt Mass-Flow Rate: 13 g/10 min (ISO 1133, 300 °C/1.2 kg)
- Molding Shrinkage (Parallel): 0.7% (ISO 294-4, 60x60x2 mm³/500 bar)
- Molding Shrinkage (Normal): 0.75% (ISO 294-4, 60x60x2 mm³/500 bar)
Mechanical Properties (23 °C/50 % r. h.)
- Tensile Modulus: 2400 MPa (ISO 527-1,-2, 1 mm/min)
- Yield Stress: 65 MPa (ISO 527-1,-2, 50 mm/min)
- Yield Strain: 6.0% (ISO 527-1,-2, 50 mm/min)
- Nominal Strain at Break: >50% (ISO 527-1,-2, 50 mm/min)
- Flexural Modulus: 2400 MPa (ISO 178, 2 mm/min)
- Flexural Strength: 98 MPa (ISO 178, 2 mm/min)
- Charpy Notched Impact Strength (23 °C/3 mm): 70 kJ/m² (ISO 21305/ISO 179/1eA)
- Charpy Notched Impact Strength (-30 °C/3 mm): 16 kJ/m² (ISO 21305/ISO 179/1eA)
Thermal Properties
- Glass Transition Temperature: 142 °C (ISO 11357-1,-2, 10 °C/min)
- Temperature of Deflection Under Load (1.8 MPa): 123 °C (ISO 75-1,-2)
- Vicat Softening Temperature (50 N, 50 °C/h): 142 °C (ISO 306)
- Coefficient of Linear Thermal Expansion (Parallel & Normal, 23-55 °C): 0.65 × 10⁻⁴/K (ISO 11359-1,-2)
- Thermal Conductivity: 0.20 W/(m·K) (ISO 8302, 23 °C; 50 % r. h.)
- Flash Ignition Temperature: 480 °C (ASTM D1929)
- Self Ignition Temperature: 550 °C (ASTM D1929)
Electrical Properties (23 °C/50 % r. h.)
- Relative Permittivity (100 Hz): 3.1 (IEC 60250)
- Dissipation Factor (100 Hz): 5 × 10⁻⁴ (IEC 60250)
- Volume Resistivity: 1E14 Ohm·m (IEC 62631-3-1)
- Surface Resistivity: 1E16 Ohm (IEC 62631-3-2)
- Electrical Strength: 34 kV/mm (IEC 60243-1)
Other Properties (23 °C)
- Water Absorption (Saturation): 0.30% (ISO 62, Water at 23 °C)
- Water Absorption (Equilibrium): 0.12% (ISO 62, 23 °C; 50 % r. h.)
- Density: 1200 kg/m³ (ISO 1183-1)
Processing and Drying Conditions
- Melt Temperature: 280–320 °C (ISO 294, Injection Molding)
- Mold Temperature: 80–120 °C (ISO 294, Injection Molding)
- Injection Velocity: 200 mm/s (ISO 294)
- Drying Temperature: 120 °C (Dry Air)
- Drying Time: 2–3 hours
- Maximum Moisture Content: ≤0.02%
Features & Benefits
Premium High-Gloss Finish
Makrolon AX2677 achieves flawless, mirror-like surfaces ideal for luxury automotive trims. Eliminates post-processing and meets stringent aesthetic demands while resisting UV fading.
Optimized Molding Efficiency
Medium viscosity (MVR 12 cm³/10 min) and easy-release properties reduce cycle times and ejection failures. Simplifies complex part production, cutting downtime and costs.
Rigorous Durability
UV stabilization and thermal resilience (deflection temp: 123°C @1.8 MPa) ensure long-term performance in harsh environments. Withstands weather, impacts, and thermal stress.
Use & Applications
- Automotive Exterior Trim: Roof rails, pillar appliques, and sleek body accents.
- High-Gloss Surfaces: Luxury vehicle interiors, consumer electronics, and premium appliances.
- Hard-Coating Integration: Scratch-resistant panels for touchscreens or decorative panels.
- UV-Exposed Components: Outdoor fixtures requiring color stability and weather resistance.
