Covestro Makrolon® 6267 X RE CQ
Plastic Granules
Makrolon 6267 X RE CQ PC Resin Flame Retardant Grade
Makrolon® 6267 X RE CQ is a flame-retardant, low-viscosity polycarbonate resin with UL 94V-0 certification (1.5mm). Featuring UV stabilization, easy mold release, and bio-circular content (ISCC PLUS), it’s ideal for efficient injection molding (280–320°C) in opaque industrial components.
Associated Documents
ISO TDS
Typical property data
Physical Properties (Rheological)
- Melt Volume-Flow Rate: 19 cm³/10 min (300 °C/1.2 kg, ISO 1133)
- Melt Mass-Flow Rate: 20 g/10 min (300 °C/1.2 kg, ISO 1133)
- Molding Shrinkage (Parallel/Normal): 0.5−0.7% (60x60x2 mm³/500 bar, ISO 294-4, ISO 2577)
Mechanical Properties (23 °C/50 % r. h.)
- Tensile Modulus: 2450 MPa (1 mm/min, ISO 527-1, -2)
- Yield Stress: 67 MPa (50 mm/min, ISO 527-1, -2)
- Yield Strain: 6.0% (50 mm/min, ISO 527-1, -2)
- Nominal Strain at Break: >50% (50 mm/min, ISO 527-1, -2)
- Flexural Modulus: 2400 MPa (2 mm/min, ISO 178)
- Flexural Strength: 97 MPa (2 mm/min, ISO 178)
- Charpy Notched Impact Strength: 60 kJ/m² (23 °C/3 mm, ISO 21305 based on ISO 179/1eA)
- Izod Notched Impact Strength: 15 kJ/m² (23 °C/3 mm, ISO 21305 based on ISO 180/A)
Thermal Properties
- Temperature of Deflection Under Load:
- 122 °C (1.80 MPa, ISO 75-1, -2)
- 134 °C (0.45 MPa, ISO 75-1, -2)
- Vicat Softening Temperature:
- 144 °C (50 N; 50 °C/h, ISO 306)
- 145 °C (50 N; 120 °C/h, ISO 306)
- Burning Behavior (UL 94): V-0 (1.5 mm, UL 94)
- Oxygen Index: 36% (ISO 4589-2)
- Thermal Conductivity: 0.20 W/(m·K) (23 °C; 50 % r. h., ISO 8302)
Electrical Properties (23 °C/50 % r. h.)
- Relative Permittivity:
- 3.1 (100 Hz, IEC 60250)
- 3.0 (1 MHz, IEC 60250)
- Electrical Strength: 34 kV/mm (1 mm, IEC 60243-1)
- Comparative Tracking Index (CTI Solution A): 225 (IEC 60112)
Other Properties (23 °C)
- Water Absorption (Saturation): 0.30% (Water at 23 °C, ISO 62)
- Water Absorption (Equilibrium): 0.12% (23 °C; 50 % r. h., ISO 62)
- Density: 1200 kg/m³ (ISO 1183-1)
Processing and Drying Conditions
- Injection Molding – Melt Temperature: 280 – 320 °C (ISO 294)
- Injection Molding – Mold Temperature: 80 – 120 °C (ISO 294)
- Drying Temperature: 120 °C
- Drying Time: 2 – 3 hours
- Moisture Content (Max): ≤ 0.02%
Features & Benefits
Superior Flame Resistance
UL 94V-0 rated at just 1.5mm thickness, this material ensures critical fire safety in electronics and automotive parts, reducing compliance risks.
Eco-Friendly Efficiency
Partially bio-circular (mass balance) and UV-stabilized, it supports sustainability goals while resisting environmental degradation in outdoor applications.
Easy High-Speed Molding
Low viscosity (19 cm³/10 min) and easy-release properties slash cycle times and production costs for complex injection-molded parts.
Use & Applications
- Electrical Enclosures: Flame-retardant housings for switches/connectors.
- Automotive Components: Dashboard parts, sensor covers, and interior trim.
- Industrial Housings: Machine guards, power tools, and HVAC components.
- Consumer Electronics: Opaque casings for appliances and IoT devices.
Makrolon® 6267 X RE CQ Related Flame Retardant Grades
Disclaimer: Grades below are potential alternatives for comparison only. Not direct drop-in replacements. Typical values from Covestro ISO TDS; verify UL94 colors/thickness on current UL Yellow Card. RoHS/REACH/halogen/PFAS status not confirmed unless report provided.
| Grade | Positioning | UL94 (ISO TDS) | MVR | HDT (1.80 MPa) | Notched Impact (23°C/3mm) | Color | UV / UL 746C f1 |
|---|---|---|---|---|---|---|---|
| 6267 X | Parent grade (fossil); low viscosity; UV | V-0 @1.5mm | 19 cm³/10min | 122°C | Charpy 60P(C); Izod 15P(C) | Opaque | Yes / N/A |
| 6265 X RE CQ | Bio-circular; low viscosity; no UV | V-0 @1.5mm | 19 cm³/10min | 124°C | Charpy 65P(C); Izod 50P(C) | Opaque | No / N/A |
| 6265 X RE25 CQ | Bio-circular (ISCC PLUS) | V-0 @1.5mm | 19 cm³/10min | 124°C | Charpy 65P(C); Izod 50P(C) | Opaque | No / N/A |
| 6487 RE | Bio-circular (ISCC PLUS); 5VA; UV | V-0 @1.5mm; 5VA @3.0mm | 9.0 cm³/10min | 122°C | Charpy 70P(C); Izod 70P(C) | Opaque | Yes / N/A |