ASTM D6915-12

Standard Practice for Carbon Black—Evaluation of Standard Reference Blacks

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 D4821. Any SRBs carried forward will be renumbered for the new set.
SCOPE
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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 31-May-2012
• ICS: 83.040.20 - Rubber compounding ingredients
• Technical Committee: D24 - Carbon Black
• Drafting Committee: D24.61 - Carbon Black Sampling and Statistical Analysis

Relations

• Replaces: ASTM D6915-07 - Standard Practice for Carbon Black-Evaluation of Standard Reference Blacks
• Effective Date: 01-Jun-2012
• Replaced By: ASTM D6915-17 - Standard Practice for Carbon Black—Evaluation of Standard Reference Blacks
• Effective Date: 01-May-2017
• Referred By: ASTM D8043-20 - Standard Guide for Carbon Black—Shelf Life
• Effective Date: 01-Jun-2012
• Referred By: ASTM D8466-22 - Standard Guide for Recovered Carbon Black—Carbon Black Test Methods for Testing rCB
• Effective Date: 01-Jun-2012

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D6915 − 12
Standard Practice for
1
Carbon Black—Evaluation of Standard Reference Blacks
This standard is issued under the fixed designation D6915; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3.2 This practice is to be used to establish the average
physicochemical properties of a set of carbon blacks to be used
1.1 This practice covers guidelines for the production and
as SRBs.
testing for uniformity of a set of carbon blacks to be used as
Standard Reference Blacks (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
1.2 The values stated in SI units are to be regarded as the
for each test and as nearly evenly spaced across the range as
standard. The values given in parentheses are for information
possible. Typically, the carbon black grades selected consist of
only.
threetread(hard)typefurnacegrades(designatedA,B,andC),
1.3 This standard does not purport to address all of the
three carcass (soft) type furnace grades (designated D, E, and
safety concerns, if any, associated with its use. It is the
F), and one thermal type grade (designated G). Subcommittee
responsibility of the user of this standard to establish appro-
D24.61 may elect to carry one or more of the existing SRBs
priate safety and health practices and determine the applica-
into the next set provided there is enough remaining material at
bility of regulatory limitations prior to use.
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
2. Referenced Documents
tests will have an SRB set that is evenly spaced across the
2
2.1 ASTM Standards:
range of interest. All the SRB candidates are produced at
D1510 Test Method for Carbon Black—Iodine Adsorption
approximately the same time by the various producers. They
Number
are used as a set once they are approved. The sets are
D2414 Test Method for Carbon Black—Oil Absorption
consecutively numbered. Values and identification for the
Number (OAN)
current set are given in Guide D4821. Any SRBs carried
D3265 Test Method for Carbon Black—Tint Strength
forward will be renumbered for the new set.
D3493 Test Method for Carbon Black—Oil Absorption
Number of Compressed Sample (COAN)
4. Production, Packaging, Quality Control, and Quality
D4483 Practice for Evaluating Precision for Test Method
Assurance
Standards in the Rubber and Carbon Black Manufacturing
4.1 It is assumed that manufacturers of the SRBs will use
Industries
state-of-the-art techniques to ensure maximum uniformity
D4821 Guide for Carbon Black—Validation of Test Method
throughout the entire production run.The production should be
Precision and Bias
made in one continuous production and packaging lot run. The
D6556 Test Method for Carbon Black—Total and External
testing called for in this practice is not intended to be a
Surface Area by Nitrogen Adsorption
substitute for in-process quality control. This interlaboratory
study is only adequate to verify the quality of a homogeneous
3. Significance and Use
lot.
3.1 This practice is intended to ensure that SRBs are
4.2 The size of the lot for each SRB is determined by
produced and evaluated by a standard procedure.
historical records on the rate of use. The lot should have an
expected life of about five years at the most recent rate of use.
1
This practice is under the jurisdiction of ASTM Committee D24 on Carbon Historically, the lot size has usually been 10 000 lb.
Black and is the direct responsibility of Subcommittee D24.61 on Carbon Black
4.2.1 The actual usage rate of any reference material may
Sampling and Statistical Analysis.
result in one or more SRB material being depleted before the
Current edition approved June 1, 2012. Published August 2012. Originally
remaining materials in a given SRB set. When this happens,
approved in 2003. Last previous edition approved in 2007 as D6915 – 07. DOI:
10.1520/D6915-12.
Subcommittee D24.61 may elect to have a supplemental lot
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
produced for the needed SRB(s).
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
4.2.2 It is preferred that any supplemental SRB lots be
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. produced at the same location, on the same production
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D6915 − 07 D6915 − 12
Standard Practice for
1
Carbon Black—Evaluation of Standard Reference Blacks
This standard is issued under the fixed designation D6915; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
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 and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
D1510 Test Method for Carbon Black—Iodine Adsorption Number
D2414 Test Method for Carbon Black—Oil Absorption Number (OAN)
D3265 Test Method for Carbon Black—Tint Strength
D3493 Test Method for Carbon Black—Oil 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 Black—Validation of Test Method Precision and Bias
D6556 Test Method for Carbon Black—Total and External Surface Area by Nitrogen Adsorption
3. 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 D4821. Any SRBs carried
forward will be renumbered for the new set.
4. Production, Packaging, Quality Control, and Quality Assurance
4.1 It is assumed that manufacturers of the SRBs will use state-of-the-art techniques to ensure maximum uniformity throughout
the entire production run. The production should be made in one continuous production and packaging lot run. The testing called
for in this practice is not intended to be a substitute for in-process quality control. This interlaboratory study is only adequate to
verify the quality of a homogeneous lot.
1
This practice is under the jurisdiction of ASTM Committee D24 on Carbon Black and is the direct responsibility of Subcommittee D24.61 on Carbon Black Sampling
and Statistical Analysis.
Current edition approved May 1, 2007June 1, 2012. Published June 2007August 2012. Originally approved in 2003. Last previous edition approved in 20052007 as
D6915 – 05b.D6915 – 07. DOI: 10.1520/D6915-07.10.1520/D6915-12.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D6915 − 12
4.2 The size of the lot for each SRB is determined by historical records on the rate of use. The lot should have an expected life
of about five years at the most recent rate of use. Historically, the lot size has usually been 10 000 10 000 lb.
4.2.1 The
...