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Significance and Use
3.1 This practice is intended to ensure that SRBs are produced and evaluated by a standard procedure.
3.2 This practice is to be used to establish the average physicochemical properties of a set of carbon blacks to be used as SRBs.
3.3 The carbon black grades to be used as SRBs should be selected to give as much coverage of the typical usage range for each test and as nearly evenly spaced across the range as possible. Typically, the carbon black grades selected consist of three tread (hard) type furnace grades (designated A, B, and C), three carcass (soft) type furnace grades (designated D, E, and F), and one thermal type grade (designated G). Subcommittee D24.61 may elect to carry one or more of the existing SRBs into the next set provided there is enough remaining material at the rate of usage to last through the expected life of the next set. Limiting the choice of grades to be used means that not all tests will have an SRB set that is evenly spaced across the range of interest. All the SRB candidates are produced at approximately the same time by the various producers. They are used as a set once they are approved. The sets are consecutively numbered. Values and identification for the current set are given in Guide . Any SRBs carried forward will be renumbered for the new set.
1.1 This practice covers guidelines for the production and testing for uniformity of a set of carbon blacks to be used as Standard Reference Blacks (SRBs).
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, health and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D1510 Test Method for Carbon BlackIodine Adsorption Number
D2414 Test Method for Carbon BlackOil Absorption Number (OAN)
D3265 Test Method for Carbon BlackTint Strength
D3493 Test Method for Carbon BlackOil Absorption Number of Compressed Sample (COAN)
D4483 Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries
D4821 Guide for Carbon BlackValidation of Test Method Precision and Bias
D6556 Test Method for Carbon BlackTotal and External Surface Area by Nitrogen Adsorption
D8043 Guide for Carbon BlackShelf Life
ICS Number Code 83.040.20 (Rubber compounding ingredients)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM D6915-17e1, Standard Practice for Carbon Black—Evaluation of Standard Reference Blacks, ASTM International, West Conshohocken, PA, 2017, www.astm.orgBack to Top