MatWeb - Material Property Data Advertise with MatWeb!     Register Now
Data sheets for over 180,000 metals, plastics, ceramics, and composites.
MatWeb - Material Property Data HOME  •   SEARCH  •   TOOLS  •   SUPPLIERS  •   FOLDERS  •   ABOUT US  •   FAQ  •   LOG IN    
Recently Viewed Materials (most recent at top)  

Login to see your most recently viewed materials here.

Or if you don't have an account with us yet, then click here to register.

  Searches:   Advanced  | Category  | Property  | Metals  | Trade Name  | Manufacturer  | Recently Viewed Materials
Elmet Technologies
Cabot BLACK PEARLS® 4840 Specialty carbon black
Categories: Other Engineering Material; Additive/Filler for Polymer

Material Notes: Product highlights: BLACK PEARLS 4840 specialty carbon black delivers exceptional surface quality and retention of mechanical properties, as well as excellent color performance, for plastic compounds used in electronics and automotive applications.

Key applications: BLACK PEARLS 4840 specialty carbon black is highly dispersible which allows masterbatch producers and compounders to achieve superior surface smoothness, mechanical performance, and color performance in visible molded parts in applications including:

  • Consumer electronics
  • Automotive interiors and exterior components
  • Home appliances
  • Other applications where moldings are visible
BLACK PEARLS 4840 specialty carbon black’s high levels of dispersibility and color performance make it well-suited for use in engineering resins including ABS, PC, PA, and POM. These performance benefits also make it an excellent choice for polyolefins, TPOs, and formulations where processors typically have difficulty dispersing carbon black. It can be incorporated into a compound via masterbatch or direct addition.

Performance features:

  • Exceptional surface smoothness and preservation of polymer mechanical properties
  • Excellent jetness and blue tone performance
  • High levels of UV protection
  • Processing ease due to a high level of dispersibility

    Information provided by Cabot Corporation

Available Properties
  • Density, ASTM D-1513
  • Particle Mesh Size, ASTM D-1514, <100 ppm
  • Moisture Content, ASTM D-1509
Property Data

This page displays only the text
of a material data sheet.

To see MatWeb's complete data
sheet for this material (including
material property data, metal
compositions, material suppliers,
), please click the button below.

Manufacturer Notes:

Category Notes

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.


Specialty Compounds RTP Company
Please read our License Agreement regarding materials data and our Privacy Policy. Questions or comments about MatWeb? Please contact us at We appreciate your input.

The contents of this web site, the MatWeb logo, and "MatWeb" are Copyright 1996-2024 by MatWeb, LLC. MatWeb is intended for personal, non-commercial use. The contents, results, and technical data from this site may not be reproduced either electronically, photographically or substantively without permission from MatWeb, LLC.