Covestro Makrolon® 2605 PC Resin
Plastic Granules
Makrolon® 2605 Polycarbonate PC Resin Injection molding Grade
Makrolon 2605 by Covestro is a versatile, medium-viscosity polycarbonate resin ideal for injection molding. With an MVR of 12 cm³/10 min (300°C/1.2 kg), it offers easy processing, excellent release properties, and is available in transparent, translucent, or opaque colors. Perfect for demanding industrial applications.
Associated Documents
ISO TDS
Typical property data
Physical Properties (Rheological)
- Melt Volume-Flow Rate (MVR): 12 cm³/10 min (300 °C/1.2 kg, ISO 1133)
- Melt Mass-Flow Rate (MFR): 13 g/10 min (300 °C/1.2 kg, ISO 1133)
- Molding Shrinkage:
- Parallel: 0.7% (60x60x2 mm³, 500 bar, ISO 294-4)
- Normal: 0.75% (60x60x2 mm³, 500 bar, ISO 294-4)
Mechanical Properties (23 °C/50 % r. h.)
- Tensile Modulus: 2400 MPa (1 mm/min, ISO 527-1, -2)
- Yield Stress: 66 MPa (50 mm/min, ISO 527-1, -2)
- Yield Strain: 6.1% (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)
- Izod Notched Impact Strength:
- 70 kJ/m² (23 °C, 3 mm, ISO 21305/ISO 180/A)
- 15 kJ/m² (-30 °C, 3 mm, ISO 21305/ISO 180/A)
- Puncture Impact (Maximum Force):
- 5400 N (23 °C, ISO 6603-2)
- 6300 N (-30 °C, ISO 6603-2)
Thermal Properties
- Glass Transition Temperature: 144 °C (10 °C/min, ISO 11357-1, -2)
- Temperature of Deflection Under Load:
- 125 °C (1.80 MPa, ISO 75-1, -2)
- 136 °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:
- V-2 (0.75 mm, UL 94)
- HB (2.5 mm, UL 94)
- Glow Wire Test (GWIT):
- 875 °C (0.75 mm, IEC 60695-2-13)
- 875 °C (1.5 mm, IEC 60695-2-13)
Electrical Properties (23 °C/50 % r. h.)
- Relative Permittivity:
- 3.1 (100 Hz, IEC 60250)
- 3.0 (1 MHz, IEC 60250)
- Dissipation Factor:
- 5×10⁻⁴ (100 Hz, IEC 60250)
- 90×10⁻⁴ (1 MHz, IEC 60250)
- Volume Resistivity: 1E14 Ohm·m (IEC 62631-3-1)
- Surface Resistivity: 1E16 Ohm (IEC 62631-3-2)
- Electrical Strength: 34 kV/mm (1 mm, IEC 60243-1)
Other Properties (23 °C)
- Density: 1200 kg/m³ (ISO 1183-1)
- Water Absorption:
- Saturation Value: 0.30% (Water at 23 °C, ISO 62)
- Equilibrium Value: 0.12% (23 °C; 50% r. h., ISO 62)
Processing and Drying Conditions
- Injection Molding Melt Temperature: 280–320 °C (recommended: 300 °C, ISO 294)
- Mold Temperature: 80–120 °C (recommended: 80 °C, ISO 294)
- Drying Conditions:
- Temperature: 120 °C
- Time: 2–3 hours
- Maximum Moisture Content: ≤ 0.02%
Features & Benefits
Unmatched Impact Resistance
Covestro Makrolon 2605 absorbs high-energy impacts without cracking (Charpy notched: 70 kJ/m² at 23°C). Ideal for protective gear, tool housings, or automotive parts exposed to sudden stress.
Reliable High-Temperature Performance
It withstands 136°C under load (0.45 MPa) and a Vicat softening point of 144°C. Ensures stability in automotive components, electrical enclosures, or lighting fixtures near heat sources.
Safety-Compliant Electrical Properties
It boasts CTI 250 (Solution A) and UL 94 V-2/HB ratings. Safely used in power tools, connectors, and EV components where arc resistance and flammability standards are critical.
Use & Applications
- Automotive: Lens housings and dashboard components resisting heat deformation.
- Electronics: Flame-retardant (V-2) power tool casings and EV battery covers.
- Industrial: Impact-resistant safety visors and machine guards.
- Consumer Goods: Durable transparent kitchenware and appliance panels.
- Lighting: High-clarity (89% transmittance) diffusers and LED covers.
