Covestro Makrolon® 6555 PC Resin

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Makrolon PC Polycarbonate

Makrolon 6555 PC Resin Flame retardant grades

Makrolon® 6555 by Covestro is a flame-retardant, medium-viscosity polycarbonate resin. With UL 94 V-0 certification (3.0 mm), easy mold release, and versatile transparency options, it excels in demanding injection molding applications. Ideal for electrical and industrial components.

  • Character: flame retardant; MVR (300 °C/1.2 kg) 10 cm³/10 min; UL 94V-0/3.0 mm; medium viscosity; easy release; available in transparent, translucent and opaque colors
  • Application: Injection molding
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Key technical data (ISO)

  • Flame Performance: UL 94 V-0 (3.0 mm), V-2 (1.0 mm) | Oxygen Index: 35%
  • Tensile Modulus: 2,400 MPa
  • Notched Impact (23°C): 70 kJ/m² (Charpy)
  • Flexural Strength: 98 MPa
  • HDT @1.8 MPa: 125°C | Vicat Softening: 144°C
  • Continuous Use Temp: 125°C (UL 746B)
  • CTI: 225 (Solution A) | Volume Resistivity: 1E14 Ω·m
  • Shrinkage: 0.6–0.8% | Melt Temp: 280–320°C
  • Drying: 120°C/2–3 hrs (≤0.02% moisture)

Download

Makrolon 6555 ISO Data SheetDownload

Application

  • Electrical Enclosures: Flame-retardant housings for switches/connectors.
  • Transparent Covers: Light diffusers, indicator lenses, or display panels.
  • Industrial Components: Machine guards, safety visors, and automotive modules.
  • Consumer Tech: Charger casings, power tool housings, and appliance parts.

Features & Benefits

Reliable Flame Retardancy

UL 94 V-0 certified at 3.0 mm thickness, Makrolon PC 6555 ensures critical fire safety in electronics and enclosures—reducing compliance risks and enhancing end-user protection.

Optimized Processing Flow

Medium viscosity (MVR 10 cm³/10 min) enables smooth injection molding of thin-walled parts, minimizing defects while maintaining high tensile strength (66 MPa yield stress).

Clarity & Durability

It achieves 89% luminous transmittance (1 mm) with easy-release properties. Perfect for transparent covers or indicators needing scratch resistance and optical precision.

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Advanced Manufacturing

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Water ring pelletizer
Automatic bagging machine
Vibrating screening machine
Plastic rein material warehouse storage capacity
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