Covestro Makrolon® 1804 PC Resin
Plastic Granules
Makrolon 1804 PC Resin Flame Retardant Grade
Covestro Makrolon 1804 is a high-viscosity, flame-retardant polycarbonate resin optimized for extrusion. With MVR 6.0 cm³/10 min (300°C/1.2kg), UL 94V-2 ratings (1.5mm/3.0mm), UV stabilization, and low plate-out, it delivers durable, transparent solid sheets for demanding industrial applications.
Associated Documents
ISO TDS
Typical property data
Physical Properties (Rheological)
- Melt Volume-Flow Rate (300 °C/1.2 kg): 6.0 cm³/10 min (ISO 1133)
- Melt Mass-Flow Rate (300 °C/1.2 kg): 6.5 g/10 min (ISO 1133)
- Molding Shrinkage (Parallel): 0.7% (ISO 294-4)
- Molding Shrinkage (Normal): 0.75% (ISO 294-4)
Mechanical Properties (23 °C/50% r.h.)
- Tensile Modulus (1 mm/min): 2400 MPa (ISO 527-1,-2)
- Yield Stress (50 mm/min): 65 MPa (ISO 527-1,-2)
- Yield Strain (50 mm/min): 6.2% (ISO 527-1,-2)
- Nominal Strain at Break (50 mm/min): >50% (ISO 527-1,-2)
- Flexural Modulus (2 mm/min): 2400 MPa (ISO 178)
- Flexural Strength (2 mm/min): 96 MPa (ISO 178)
- Charpy Notched Impact Strength (23 °C, 3 mm): 80 kJ/m² (ISO 21305/ISO 179/1eA)
Thermal Properties
- Glass Transition Temperature: 148 °C (ISO 11357-1,-2)
- Temperature of Deflection Under Load (1.80 MPa): 127 °C (ISO 75-1,-2)
- Vicat Softening Temperature (50 N, 50 °C/h): 147 °C (ISO 306)
- Burning Behavior (1.5 mm): UL 94 V-2 (UL 94)
- Oxygen Index: 31% (ISO 4589-2)
Electrical Properties (23 °C/50% r.h.)
- Relative Permittivity (100 Hz): 3.1 (IEC 60250)
- Relative Permittivity (1 MHz): 3.0 (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 (1 mm): 34 kV/mm (IEC 60243-1)
Other Properties (23 °C)
- Water Absorption (Saturation Value): 0.30% (ISO 62)
- Density: 1200 kg/m³ (ISO 1183-1)
- Luminous Transmittance (Clear Transparent Materials, 2 mm): 89% (ISO 13468-2)
Processing and Drying Conditions
- Injection Molding Melt Temperature: 300 °C (ISO 294)
- Injection Molding Mold Temperature: 80 °C (ISO 294)
- Injection Velocity: 200 mm/s (ISO 294)
Features & Benefits
Reliable Flame Retardancy & Safety
Makrolon 1804 meets UL 94 V-2 (1.5mm/3.0mm) and V-0 (6.0mm), plus an oxygen index of 31%. Ideal for fire-sensitive environments like transport interiors, ensuring compliance without sacrificing transparency.
Extreme Impact Resistance
It boasts Charpy notched impact up to 80 kJ/m² (23°C) and puncture energy of 70 J (30°C). Perfect for high-stress parts like aircraft seating or automotive panels, reducing cracks and replacements.
Low-Maintenance Extrusion Performance
UV-stabilized and low plate-out design ensures consistent color and clarity in sheets. Minimizes equipment cleaning downtime, boosting production efficiency for solid sheet manufacturers.
Use & Applications
- Extrusion: High-clarity solid sheets for barriers or covers.
- Aircraft Construction: Cabin interiors, lightweight window liners.
- Automotive Construction: Dash components, lighting covers.
- Railway Construction: Seat backs, impact-resistant partitions.
Makrolon® 1804 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 |
|---|---|---|---|---|---|---|---|
| 6717 | High viscosity, branched; UV; inj/ext | V-0 @2.0mm | 3.0 cm³/10min | 127°C | Charpy 70P; Izod 60P | T/T/O | Yes / N/A |
| 6557 | Medium viscosity; UV; transparent | V-2 @1.5mm; V-0 @3.0mm | 10 cm³/10min | 124°C | Charpy 70P(C); Izod 65P | T/T/O | Yes / N/A |
| FR7087 | Medium viscosity; UV; E/E | V-2 @1.5mm; V-0 @2.2mm; 5VA @3.0mm | 12 cm³/10min | 106°C | Izod 8C; 8C @-30°C | T/T | Yes / N/A |
| 6457 | Medium viscosity; UV; transparent | V-2 @1.5mm; V-0 @3.0mm | 12 cm³/10min | 123°C | Charpy 70P(C); Izod 65P | T/O | Yes / N/A |
👉 Full Portfolio: Browse all 27+ grades on the Covestro Flame Retardant PC Resin Hub.