Covestro Makrolon® 2865 PC Resin
Makrolon 2865 PC Resin Flame Retardant Grade
Makrolon 2865 is a flame-retardant, medium-viscosity PC resin ideal for injection molding. With an MVR of 10 cm³/10 min (300°C/1.2 kg), UL 94V-2 compliance (1.5 mm & 3.0 mm), and easy-release properties, it excels in safety-critical applications. Available in transparent, translucent, and opaque colors.
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ISO TDS
Typical property data
Physical Properties (Rheological)
- Melt volume-flow rate (300 °C/1.2 kg): 10 cm³/10 min (ISO 1133)
- Melt mass-flow rate (300 °C/1.2 kg): 10 g/10 min (ISO 1133)
- Molding shrinkage (parallel): 0.65% (ISO 294-4)
- Molding shrinkage (normal): 0.7% (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): 66 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): 97 MPa (ISO 178)
- Charpy notched impact strength (23 °C, 3 mm): 75 kJ/m² (ISO 21305, based on ISO 179/1eA)
- Izod notched impact strength (23 °C, 3 mm): 65 kJ/m² (ISO 21305, based on ISO 180/A)
Thermal Properties
- Glass transition temperature: 145 °C (ISO 11357-1,-2)
- Deflection temperature under load (1.80 MPa): 125 °C (ISO 75-1,-2)
- Vicat softening temperature (50 N, 50 °C/h): 145 °C (ISO 306)
- Coefficient of linear thermal expansion: 0.65 × 10⁻⁴/K (ISO 11359-1,-2)
- Burning behavior (UL 94, 0.75 mm): V-2 (UL 94)
- Oxygen index: 32% (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)
- Dissipation factor (100 Hz): 5 × 10⁻⁴ (IEC 60250)
- Dissipation factor (1 MHz): 90 × 10⁻⁴ (IEC 60250)
- Volume resistivity: 1 × 10¹⁴ Ω·m (IEC 62631-3-1)
- Surface resistivity: 1 × 10¹⁶ Ω (IEC 62631-3-2)
- Electrical strength (1 mm): 34 kV/mm (IEC 60243-1)
Other Properties (23 °C)
- Water absorption (saturation value, 23 °C): 0.30% (ISO 62)
- Density: 1200 kg/m³ (ISO 1183-1)
- Refractive index: 1.586 (ISO 489)
- Luminous transmittance (2 mm, clear transparent): 89% (ISO 13468-2)
Processing and Drying Conditions
- Melt temperature (recommended): 280–320 °C (ISO 294)
- Mold temperature: 80–120 °C (ISO 294)
- Drying temperature: 120 °C
- Drying time: 2–3 hours
- Moisture content (max.): ≤0.02%
Use & Applications
- Electrical Enclosures: Circuit breakers, connectors (UL 94V-2 & CTI 225).
- Transparent Components: Light diffusers, safety visors (89% light transmission).
- Industrial Housings: Power tools, automotive controls (high impact strength).
Features & Benefits
Superior Flame Safety
Self-extinguishing UL 94V-2 rating (1.5–3.0 mm) and Glow Wire Ignition (GWFI) up to 960°C (3.0 mm). Ideal for electrical components needing fire resistance.
Effortless Processing
Medium viscosity (MVR 10 cm³/10 min) and easy mold release reduce cycle times. Optimized for injection molding (280–320°C melt temp).
Optical Clarity & Versatility
88–89% light transmission (1–3 mm thickness) and <0.8% haze. Suitable for transparent housings, lenses, and tinted industrial parts.
Makrolon® 2865 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 |
|---|---|---|---|---|---|---|---|
| 2467 | Low viscosity; UV; transparent | V-2 @0.75mm; V-0 @6.4mm | 19 cm³/10min | 124°C | Charpy 65P(C); Izod 60P | T/T/O | Yes / N/A |
| 6455 | Medium viscosity; transparent | V-2 @1.5mm; V-0 @3.0mm | 12 cm³/10min | 124°C | Charpy 70P; Izod 65P | T/T/O | No / N/A |
| 6555 | Medium viscosity; transparent | V-0 @3.0mm; V-2 @1.0mm | 10 cm³/10min | 125°C | Charpy 70P; Izod 65P | T/T/O | No / 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 |
👉 Full Portfolio: Browse all 27+ grades on the Covestro Flame Retardant PC Resin Hub.