by SpecialChem

Makrolon® TC621

Technical Datasheet | Supplied by Covestro

Makrolon® TC621 by Covestro is an electrically conductive, flame-retardant polycarbonate (PC) grade. It exhibits high thermal conductivity, medium viscosity and easy processing. It is suitable for processing by injection molding. Makrolon® TC621 is used in light component such as LED heat sinks (metal replacement) and components for heat dissipation.

Makrolon® TC621 Properties

Physical Properties

Value & Unit

Test Condition

Test Method

Linear Mold Shrinkage, Normal

0.1 - 0.2 %

(At 60x60x2 mm)

ISO 294-4

Linear Mold Shrinkage, Flow

0.1 - 0.2 %

(At 60x60x2 mm)

ISO 294-4

Viscosity, Melt

200 Pa-s

(At 300°C, 1000 s^-1)

ISO 11443-A

Injection Properties

Value & Unit

Test Condition

Test Method

Hold Pressure

50 - 75 %

Peripheral Speed

0.05 - 0.2 m/s

Injection Velocity

200 mm/s

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Makrolon® TC621

Makrolon® TC621 Properties

Physical Properties

Makrolon® TC621 Processing Guidelines

Injection Properties