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ASTM D5230-05

(Test Method)

Standard Test Method for Carbon Black—Automated Individual Pellet Hardness

Standard Test Method for Carbon Black—Automated Individual Pellet Hardness

SIGNIFICANCE AND USE
Individual 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.
SCOPE
1.1 This test method covers a procedure for measuring individual pellet hardness of carbon black by the automated pellet hardness tester.
1.2 The values stated in SI units are to be regarded as the standard. The values 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-Nov-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 D5230-04e1 - Standard Test Method for Carbon Black—Automated Individual Pellet Hardness
Effective Date
01-Dec-2005
Replaced By
ASTM D5230-09 - Standard Test Method for Carbon Black—Automated Individual Pellet Hardness
Effective Date
01-Jan-2009
Referred By
ASTM D4122-17(2023) - Standard Practice for Carbon Black—Evaluation of an Industry Reference Black
Effective Date
01-Dec-2005
Referred By
ASTM D5817-20 - Standard Practice for Carbon Black, Pelleted—Reduction, Blending, and Drying of Gross Samples for Testing
Effective Date
01-Dec-2005
Referred By
ASTM D8466-22 - Standard Guide for Recovered Carbon Black—Carbon Black Test Methods for Testing rCB
Effective Date
01-Dec-2005
Referred By
ASTM D3053-23 - Standard Terminology Relating to Carbon Black
Effective Date
01-Dec-2005

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ASTM D5230-05 - Standard Test Method for Carbon Black—Automated Individual Pellet HardnessASTM D5230-05 - Standard Test Method for Carbon Black—Automated Individual Pellet Hardness
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ASTM D5230-05 - Standard Test Method for Carbon Black—Automated 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:D5230–05
Standard Test Method for
1
Carbon Black—Automated Individual Pellet Hardness
This standard is issued under the fixed designation D5230; 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 from this portion are selected and placed into the tester. The
individual pellets are pressed against a platen with a load cell
1.1 This test method covers a procedure for measuring
formeasuringforce.Aspressureisappliedthepelletwilleither
individual pellet hardness of carbon black by the automated
2 break with a rapid force reduction or the pellet will simply
pellet hardness tester.
compress.Theindividualpellethardnessisthemaximumforce
1.2 The values stated in SI units are to be regarded as the
priortoaforcereductionofatleast3cNorthemaximumforce
standard. The values in parentheses are for information only.
requiredtocompressthepelletto90%,whichevercomesfirst.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4. Significance and Use
responsibility of the user of this standard to establish appro-
4.1 Individual pellet hardness is related to several carbon
priate safety and health practices and determine the applica-
black characteristics. Among these are mass strength and
bility of regulatory limitations prior to use.
attrition. The subsequent level of dispersion obtained in some
2. Referenced Documents mixedcompoundscontainingthecarbonblackmaybeaffected
3
by pellet hardness.Acceptable pellet hardness must be agreed
2.1 ASTM Standards:
to by the user and the producer.
D1511 Test Method for Carbon Black—Pellet Size Distri-
bution
5. Apparatus
D1799 Practice for Carbon Black—Sampling Packaged
2
5.1 Automated Pellet Hardness Tester, capable of achiev-
Shipments
ing an absolute measuring accuracy of 62 cN (2 gf) for the
D1900 Practice for Carbon Black—Sampling Bulk Ship-
force measurement and 60.1 mm for the diameter measure-
ments
ment and a relative accuracy of 60.5 cN (0.5 gf) for the force
D4483 Practice for Evaluating Precision for Test Method
measurement and 0.02 mm for the diameter measurement and
Standards in the Rubber and Carbon Black Manufacturing
consisting of the following major components and character-
Industries
istics.
E11 Specification for Wire Cloth and Sieves for Testing
5.1.1 A means for automatic loading of a pellet on the
Purposes
transport platen for transporting the pellet so as to contact the
3. Summary of Test Method second platen with a minimum force. Typically one platen
containsaforcemeasuringdevice.Therequiredforcetodetect
3.1 A sample of carbon black is passed through two sieves
the contact shall not exceed 2 cN (2 gf),
to isolate a fraction of uniform size.The most spherical pellets
5.1.2 A means for applying the force at a constant rate,
5.1.3 Ameans for transporting the pellet so to minimize its
1
This test method is under the jurisdiction ofASTM Committee D24 on Carbon
movement during the application of force.
Black and is the direct responsibility of Subcommittee D24.51 on Carbon Black
5.1.4 Ameans for measuring the diameter of the individual
Pellet Properties.
pellet under test as measured along the axis of the application
Current edition approved Dec. 1, 2005. Published January 2006. Originally
e1
approved in 1992. Last previous edition approved in 2004 as D5230–04 .
of force.
2
The sole source of supply of the Concarb Titan Automated Pellet Hardness
5.1.5 A control device for directing the instrument through
TesterknowntothecommitteeatthistimeisTitanSpecialties,Inc.,P.O.Box2316,
the test cycle that includes crushing the pellet under controlled
Pampa, TX 79065, E-mail: sales@titanspecialties.com. The HITEC IPHT is
available from HITEC Luxembourg, 5 rue de L’ Eglise, L-1458, Luxembourg, conditions, measuring and storing the results of the initial
E-mail: info@hitec.lu. If you are aware of alternative suppliers, please provide this
diameter and crush force determinations, cleaning the frag-
information to ASTM International Headquarters. Your comments will receive
ments from the platen surfaces, and starting the next cycle.
1
careful consideration at a meeting of the responsible technical committee, which
you may attend.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. 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

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