ASTM D5230-09

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: 31-Dec-2008
• ICS: 83.040.20 - Rubber compounding ingredients
• Technical Committee: D24 - Carbon Black
• Drafting Committee: D24.51 - Carbon Black Pellet Properties

Relations

• Replaces: ASTM D5230-05 - Standard Test Method for Carbon Black—Automated Individual Pellet Hardness
• Effective Date: 01-Jan-2009
• Replaced By: ASTM D5230-09e1 - Standard Test Method for Carbon Black—Automated Individual Pellet Hardness
• Effective Date: 01-Jan-2009
• Referred By: ASTM D5817-20 - Standard Practice for Carbon Black, Pelleted—Reduction, Blending, and Drying of Gross Samples for Testing
• 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-Jan-2009
• Referred By: ASTM D8466-22 - Standard Guide for Recovered Carbon Black—Carbon Black Test Methods for Testing rCB
• Effective Date: 01-Jan-2009
• Referred By: ASTM D3053-23 - Standard Terminology Relating to Carbon Black
• Effective Date: 01-Jan-2009

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D5230–09
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 (´) 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 SpecificationforWovenWireTestSieveClothandTest
5.1.1 A means for automatic loading of a pellet on the
Sieves
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.
Current edition approved Jan. 1, 2009. Published February 2009. Originally pellet under test as measured along the axis of the application
approved in 1992. Last previous edition approved in 2005 as D5230–05. DOI:
of force.
10.1520/D5230-09.
5.1.5 A control device for directing the instrument through
2
The sole source of supply of the Concarb Titan Automated Pellet Hardness
the test cycle that includes crushing the pellet under controlled
TesterknowntothecommitteeatthistimeisTitanSpecialties,Inc.,P.O.Box2316,
Pampa, TX 79065, E-mail: [e-mail]. The HITEC IPHT is
conditions, measuring and storing the results of the initial
available from HITEC Luxembourg, 5 rue de L’ Eglise, L-1458, Luxembourg,
diameter and crush force determinations, cleaning the frag-
E-mail: [e-mail]. If you are aware of alternative suppliers, please provide this
ments from the platen surfaces, and starting the next cycle.
information to ASTM International Headquarters. Your comments will receive
1
5.1.6 An algorithm for determining the individual test end
careful consideration at a meeting of the responsible technical committee, which
you may attend.
point (determination) as the maximum observed force prior to
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
the first occurrence of either a specified reduction in diameter
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
or a specified reduction in force from
...

This document is not anASTM standard and is intended only to provide the user of anASTM 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:D5230–05 Designation:D5230–09
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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method covers a procedure for measuring individual pellet hardness of carbon black by the automated pellet
2
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.
2. Referenced Documents
3
2.1 ASTM Standards:
D1511 Test Method for Carbon BlackPellet Size Distribution
D1799 Practice for Carbon BlackSampling Packaged Shipments
D1900 Practice for Carbon BlackSampling Bulk Shipments
D4483 PracticeforEvaluatingPrecisionforTestMethodStandardsintheRubberandCarbonBlackManufacturingIndustries
E11 Specification for Wire Cloth and Sieves for Testing Purposes
3. Summary of Test Method
3.1 Asampleofcarbonblackispassedthroughtwosievestoisolateafractionofuniformsize.Themostsphericalpelletsfrom
thisportionareselectedandplacedintothetester.Theindividualpelletsarepressedagainstaplatenwithaloadcellformeasuring
force. As pressure is applied the pellet will either break with a rapid force reduction or the pellet will simply compress. The
individual pellet hardness is the maximum force prior to a force reduction of at least 3 cN or the maximum force required to
compress the pellet to 90 %, whichever comes first.
4. Significance and Use
4.1 Individualpellethardnessisrelatedtoseveralcarbonblackcharacteristics.Amongthesearemassstrengthandattrition.The
subsequentlevelofdispersionobtainedinsomemixedcompoundscontainingthecarbonblackmaybeaffectedbypellethardness.
Acceptable pellet hardness must be agreed to by the user and the producer.
5. Apparatus
2
5.1 Automated Pellet Hardness Tester , capable of achieving an absolute measuring accuracy of 62 cN (2 gf) for the force
measurement and 60.1 mm for the diameter measurement and a relative accuracy of 60.5 cN (0.5 gf) for the force measurement
and 0.02 mm for the diameter measurement and consisting of the following major components and characteristics.
5.1.1 A means for automatic loading of a pellet on the transport platen for transporting the pellet so as to contact the second
platenwithaminimumforce.Typicallyoneplatencontainsaforcemeasuringdevice.Therequiredforcetodetectthecontactshall
not exceed 2 cN (2 gf),
5.1.2 A means for applying the force at a constant rate,
5.1.3 A means for transporting the pellet so to minimize its movement during the application of force.
1
This test method is under the jurisdiction ofASTM Committee D24 on Carbon Black and is the direct responsibility of Subcommittee D24.51 on Carbon Black Pellet
Properties.
´1
Current edition approved Dec. 1, 2005. Published January 2006. Originally approved in 1992. Last previous edition approved in 2004 as D5230–04 .
Current edition approved Jan. 1, 2009. Published February 2009. Originally approved in 1992. Last previous edition approved in 2005 as D5230–05.
2
The sole source of supply of the Concarb TitanAutomated Pellet Hardness Tester known to the committee at this time is Titan Specialties, Inc., P.O. Box 2316, Pampa,
TX 79065, E-mail: [e-mail]. The HITEC IPHT is available from HITEC Luxembourg, 5 rue de L’ Eglise, L-1458, Luxembourg, E-mail: [e-mail].
Ifyouareawareofalternativesuppliers,pleaseprovidethisinformationtoASTMInternationalHeadquarters.Yourcommentswillreceivecarefulconsiderationatameeting
of the responsible technical committee, which you may attend.
3
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,[e-mail] Annual Book ofASTM 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 ----------------------
D5230–09
5.1.4 A means for measuring the diameter of th
...