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ASTM D3313-12e1

(Test Method)

Standard Test Method for Carbon Black—Individual Pellet Hardness (Withdrawn 2017)

Standard Test Method for Carbon Black—Individual Pellet Hardness (Withdrawn 2017)

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 1: Test 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.
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.
WITHDRAWN RATIONALE
This test method covers a method for measuring the hardness of individual pellets of carbon black.
Formerly under the jurisdiction of Committee D24 on Carbon Black, this test method was withdrawn in January 2017 and replaced by Test Method D5230 on Carbon Black—Automated Individual Pellet Hardness.1

General Information

Status
Withdrawn
Publication Date
31-May-2012
ICS
83.040.20 - Rubber compounding ingredients
Technical Committee
D24 - Carbon Black
Drafting Committee
D24.51 - Carbon Black Pellet Properties
Current Stage
Ref Project

Relations

Replaces
ASTM D3313-12 - Standard Test Method for Carbon Black—Individual Pellet Hardness
Effective Date
01-Jun-2012
Replaced By
ASTM D5230-21 - Standard Test Method for Carbon Black—Automated Individual Pellet Hardness
Effective Date
18-Jan-2017

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ASTM D3313-12e1 - Standard Test Method for Carbon Black—Individual Pellet Hardness (Withdrawn 2017)ASTM D3313-12e1 - Standard Test Method for Carbon Black—Individual Pellet Hardness (Withdrawn 2017)
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ASTM D3313-12e1 - Standard Test Method for Carbon Black—Individual Pellet Hardness (Withdrawn 2017)
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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
´1
Designation: D3313 − 12
Standard Test Method for
1
Carbon Black—Individual Pellet Hardness
This standard is issued under the fixed designation D3313; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1
ε NOTE—Corrected 5.1 editorially in October 2016.
1. Scope measuring device as force is applied. Pellet hardness is the
maximum force required to crush the pellets.
1.1 This test method covers a method for measuring the
hardness of individual pellets of carbon black.
4. Significance and Use
1.2 The values stated in SI units are to be regarded as the
4.1 Pellet hardness is related to several carbon black char-
standard. The values given in parentheses are for information
acteristics. Among these are mass strength and attrition. The
only.
subsequent level of dispersion obtained in some mixed com-
1.3 This standard does not purport to address all of the
pounds containing the carbon black may be affected by pellet
safety concerns, if any, associated with its use. It is the
hardness.Acceptable pellet hardness must be agreed to by the
responsibility of the user of this standard to establish appro- user and the producer.
priate safety and health practices and determine the applica-
NOTE 1—Test Method D5230 is the preferred standard for testing of
bility of regulatory limitations prior to use.
individual pellet hardness. It is recognized that Test Method D3313 relies
on operator judgement, thus adding an additional source of variation for
2. Referenced Documents
this test.
2
2.1 ASTM Standards:
5. Apparatus
D1511Test Method for Carbon Black—Pellet Size Distri-
5.1 Pellet-Hardness Tester, of a type capable of measuring
bution
the pellet hardness of the individual pellet in grams-force
D1799 Practice for Carbon Black—Sampling Packaged
(centinewtons). A suitable tester must exhibit the following
Shipments
characteristics:
D1900Practice for Carbon Black—Sampling Bulk Ship-
5.1.1 Initial contact force must be applied so that the force
ments
area rests lightly on the pellet before proceeding,
D4483Practice for Evaluating Precision for Test Method
5.1.2 Itmustbecapableofapplyingforceataconstantrate,
StandardsintheRubberandCarbonBlackManufacturing
5.1.3 It must possess an accurate means of measuring the
Industries
applied force, and
D5230Test Method for Carbon Black—Automated Indi-
5.1.4 During the test, the applied force and base plate must
vidual Pellet Hardness
be controlled so as not to cause the pellet to move or roll prior
E11Specification forWovenWireTest Sieve Cloth andTest
to crushing.
Sieves
NOTE 2—A two-pan torsion balance with 100-g dial and transparent
3. Summary of Test Method
foot mounted so it can be moved directly over the pellet will serve to
convert a balance to a pellet hardness tester, as needed.
3.1 A sample of carbon black is passed through two sieves
to isolate a fraction of uniform size.The most spherical pellets
5.2 Mechanical Sieve Shaker, conforming to Test Method
from this portion are selected and brought into contact with a
D1511.
5.3 Sieves—U.S. Standard sieves or equivalents, conform-
1
This test method is under the jurisdiction ofASTM Committee D24 on Carbon ing to Specification E11. Sieve Nos. 12 (1700-µm) and 14
Black and is the direct responsibility of Subcommittee D24.51 on Carbon Black
(1400-µm) shall be used.
Pellet Properties.
Current edition approved June 1, 2012. Published September 2012. Originally 5.4 Bottom-Receiver Pan and Top-Sieve Cover.
approved in 1974. Last previous edition approved in 2005 as D3313–05a. DOI:
5.5 Container, shallow, flat approximately 305 mm (12 in.)
10.1520/D3313-12E01.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or long.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5.6 Forceps, fitted with sponge tips. A very low-density
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. urethane foam sponge has been found to be acceptable.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
´1
D3313 − 12
6. Sampling 9. Report
6.1 Samples shall be taken in accordance with Practices 9.1 Report the following information:
D1799 or D1900.
9.1.1 Proper identification of the sample,
9.1.2 Average value in centinewtons (grams-force) rounded
7. Calibration
to the nearest millinewton (nearest 0.1 gram-force),
7.1 Equipment used for this test shall be calibrated by dead 9.1.3 Maximum as the highest individual value in centin-
weights or a force-measuring devi
...

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