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ASTM

ASTM D3313-05

(Test Method)

Standard Test Method for Carbon Black—Individual Pellet Hardness

Standard Test Method for Carbon Black—Individual Pellet Hardness

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.

General Information

Status
Historical
Publication Date
30-Jun-2005
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 D3313-04 - Standard Test Method for Carbon Black-Individual Pellet Hardness
Effective Date
01-Jul-2005
Replaced By
ASTM D3313-05a - Standard Test Method for Carbon Black—Individual Pellet Hardness
Effective Date
01-Dec-2005

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ASTM D3313-05 - Standard Test Method for Carbon Black—Individual Pellet HardnessASTM D3313-05 - Standard Test Method for Carbon Black—Individual Pellet Hardness
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ASTM D3313-05 - Standard Test Method for Carbon Black—Individual Pellet Hardness
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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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.
Designation:D3313–05
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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope hardness.Acceptable pellet hardness must be agreed to by the
user and the producer.
1.1 This test method covers a method for measuring the
hardness of individual pellets of carbon black.
NOTE 1—Test Method D5230 is the preferred standard for testing of
1.2 The values stated in SI units are to be regarded as the
individualpellethardness.ItisrecognizedthatTestMethodD3313relies
on operator judgement, thus adding an additional source of variation for
standard. The values given in parentheses are for information
this test.
only.
1.3 This standard does not purport to address all of the
4. Summary of Test Method
safety concerns, if any, associated with its use. It is the
4.1 A sample of carbon black is passed through two sieves
responsibility of the user of this standard to establish appro-
to isolate a fraction of uniform size.The most spherical pellets
priate safety and health practices and determine the applica-
from this portion are selected and brought into contact with a
bility of regulatory limitations prior to use.
measuring device as force is applied. Pellet hardness is the
2. Referenced Documents maximum force required to crush the pellets.
2
2.1 ASTM Standards:
5. Apparatus
D1511 Test Method for Carbon Black—Pellet Size Distri-
3
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:
D1900 Practice 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,
D4483 Practice for Evaluating Precision for Test Method
5.1.2 Itmustbecapableofapplyingforceataconstantrate,
Standards in the Rubber and Carbon Black Manufacturing
5.1.3 It must possess an accurate means of measuring the
Industries
applied force, and
D5230 Test 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
E11 Specification for Wire Cloth and Sieves for Testing
to crushing.
Purposes
NOTE 2—A two-pan torsion balance with 100-g dial and transparent
3. Significance and Use
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 Pellet hardness is related to several carbon black char-
4
acteristics. Among these are mass strength and attrition. The
5.2 Mechanical Sieve Shaker, (see Test Method D1511).
subsequent level of dispersion obtained in some mixed com-
pounds containing the carbon black may be affected by pellet
3
The sole source of supply of the pellet-hardness tester known to the committee
at this time is the Model-S Pellet Strength Tester with lab jack, A. L. Sweigart,
1
This test method is under the jurisdiction ofASTM Committee D24 on Carbon Technical Service Shop, 1206 Hemlock St., Borger, TX 79007. If you are aware of
Black and is the direct responsibility of Subcommittee D24.51 on Carbon Black alternative suppliers, please provide this information to ASTM International
Pellet Properties. Headquarters.Your comments will receive careful consideration at a meeting of the
1
Current edition approved July 1, 2005. Published August 2005. Originally responsible technical committee, which you may attend.
4
approved in 1974. Last previous edition approved in 2004 as D3313–04. The sole source of supply of the apparatus known to the committee at this time
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or is the Ro-Tap sieve shaker. If you are aware of alternative suppliers, please provide
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM this information toASTM International Headquarters. Your comments will receive
1
Standards volume information, refer to the standard’s Document Summary page on careful consideration at a meeting of the responsible technical committee, which
the ASTM website. you may attend.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
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