ASTM D3313 - 12

    Standard Test Method for Carbon Black—Individual Pellet Hardness

    Active Standard ASTM D3313 | Developed by Subcommittee: D24.51

    Book of Standards Volume: 09.01


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    Significance and Use

    4.1 Pellet hardness is related to several carbon black characteristics. Among these are mass strength and attrition. The subsequent level of dispersion obtained in some mixed compounds containing the carbon black may be affected by pellet hardness. Acceptable pellet hardness must be agreed to by the user and the producer.

    Note 1Test Method D5230 is the preferred standard for testing of individual pellet hardness. It is recognized that Test Method D3313 relies on operator judgement, thus adding an additional source of variation for this test.

    1. Scope

    1.1 This test method covers a method for measuring the hardness of individual pellets of carbon black.

    1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

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


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D1511 Test Method for Carbon Black--Pellet Size Distribution

    D1799 Practice for Carbon Black--Sampling Packaged Shipments

    D1900 Practice for Carbon Black--Sampling Bulk Shipments

    D4483 Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries

    D5230 Test Method for Carbon Black--Automated Individual Pellet Hardness

    E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves


    ICS Code

    ICS Number Code 83.040.20 (Rubber compounding ingredients)

    UNSPSC Code

    UNSPSC Code 12171603(Carbon black)


    DOI: 10.1520/D3313-12

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