ASTM D1508 Standard Test Method for Carbon Black, Pelleted Fine Powders, and Abrasion

ASTM Tests

ASTM D1508 Standard Test Method for Carbon Black, Pelleted Fine Powders, and Abrasion

The ASTM D1508 test covers the determination of the fineness and wear of pelleted carbon black. The wear of carbon black is useful for estimating the weight-volume relationship for certain applications such as automated bulk loading systems.

ASTM D1508 Standard Test Method for Carbon Black, Pelleted Fine Powders, and Abrasion

The ASTM D1508 test covers two test methods:

Method A Fines - A sample of carbon black is placed on a 125 µm sieve and shaken for 5 minutes on a mechanical or vibrating sieve shaker. The pellets passing through the sieve are defined as pellet particles, powder and unpelleted black, carbon black fine particles. Reviews are expressed as a percentage.

The fine matter content of carbon black is related to the bulk fluidity, dustiness and in some cases the level of dispersion. Due to distribution and many other variables that affect processing, the importance of thinning content must be determined by the user.

Method B Wear - The same test sample is shaken for an additional 15 minutes to determine the amount of pellet degradation or abrasion that occurs during this additional shaking interval. Attrition is expressed as a percentage.

By comparing the percentage of fines and wear, pellet stability and the amount of fines that can be formed by pellet degradation during transport, handling or transit
an indication can be obtained.

Values ​​stated in SI units should be accepted as standard. No other units of measurement are included in this standard.

This standard does not purport to address all, if any, safety concerns associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health and environmental practices and to determine the applicability of regulatory restrictions prior to use.

ASTM D1508 Test Procedure

Up to six sieve and receiver sets are stacked with receivers under each sieve. Weigh out 25 g portions, taking care to dip approximately 25,0 g of black through the trough separator. Each sample is transferred to a separate 125 µm sieve. Up to six sieve and receiver sets stack as one. A lid is placed on top and transferred to the shaker. A vibration amplitude of 1,3 mm is selected with the vibrating screen.

Weighing the sample by pouring is not an appropriate practice. Fines tend to remain in the container while larger pellets are poured directly before the black container as there will be fines and smaller pellets. Sinking black from the container is the preferred technique.

Our organization also provides testing services within the scope of ASTM D1508 Carbon Black, Pelletized Fine Powders and Standard Test Method for Abrasion, within the framework of laboratory testing services.

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