ASTM D5230-12a

Standard Test Method for Carbon Black—Automated Individual Pellet Hardness

SIGNIFICANCE AND USE
4.1 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.2  
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: 14-Aug-2012
• ICS: 83.040.20 - Rubber compounding ingredients
• Technical Committee: D24 - Carbon Black
• Drafting Committee: D24.51 - Carbon Black Pellet Properties

Relations

• Replaces: ASTM D5230-12 - Standard Test Method for Carbon Black—Automated Individual Pellet Hardness
• Effective Date: 15-Aug-2012
• Replaced By: ASTM D5230-13 - Standard Test Method for Carbon Black—Automated Individual Pellet Hardness
• Effective Date: 01-Jan-2013
• Referred By: ASTM D4122-17(2023) - Standard Practice for Carbon Black—Evaluation of an Industry Reference Black
• Effective Date: 15-Aug-2012
• Referred By: ASTM D5817-20 - Standard Practice for Carbon Black, Pelleted—Reduction, Blending, and Drying of Gross Samples for Testing
• Effective Date: 15-Aug-2012
• Referred By: ASTM D8466-22 - Standard Guide for Recovered Carbon Black—Carbon Black Test Methods for Testing rCB
• Effective Date: 15-Aug-2012
• Referred By: ASTM D3053-23 - Standard Terminology Relating to Carbon Black
• Effective Date: 15-Aug-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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D5230 − 12a
StandardTest 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 3. Summary of Test Method
3.1 A sample of carbon black is passed through two sieves
1.1 This test method covers a procedure for measuring
to isolate a fraction of uniform size.The most spherical pellets
individual pellet hardness of carbon black by the automated
2
from this portion are selected and placed into the tester. The
pellet hardness tester.
individual pellets are pressed against a platen with a load cell
1.2 The values stated in SI units are to be regarded as the
formeasuringforce.Aspressureisappliedthepelletwilleither
standard. The values in parentheses are for information only.
break with a rapid force reduction or the pellet will simply
compress.Theindividualpellethardnessisthemaximumforce
1.3 This standard does not purport to address all of the
priortoaforcereductionofatleast3cNorthemaximumforce
safety concerns, if any, associated with its use. It is the
requiredtocompressthepelletto90%,whichevercomesfirst.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
4. Significance and Use
bility of regulatory limitations prior to use.
4.1 Individual pellet hardness is related to several carbon
2. Referenced Documents black characteristics. Among these are mass strength and
attrition. The subsequent level of dispersion obtained in some
3
2.1 ASTM Standards:
mixedcompoundscontainingthecarbonblackmaybeaffected
D1511Test Method for Carbon Black—Pellet Size Distri-
by pellet hardness.Acceptable pellet hardness must be agreed
bution
to by the user and the producer.
D1799Practice for Carbon Black—Sampling Packaged
Shipments
5. Apparatus
D1900Practice for Carbon Black—Sampling Bulk Ship-
2
5.1 Automated Pellet Hardness Tester, capable of achiev-
ments
ing an absolute measuring accuracy of 62 cN (2 gf) for the
D4483Practice for Evaluating Precision for Test Method
force measurement and 60.1 mm for the diameter measure-
StandardsintheRubberandCarbonBlackManufacturing
ment and a relative accuracy of 60.5 cN (0.5 gf) for the force
Industries
measurement and 0.02 mm for the diameter measurement and
E11Specification forWovenWireTest Sieve Cloth andTest
consisting of the following major components and character-
Sieves
istics.
5.1.1 A means for automatic loading of a pellet on the
transport platen for transporting the pellet so as to contact the
1
This test method is under the jurisdiction ofASTM Committee D24 on Carbon
second platen with a minimum force. Typically one platen
Black and is the direct responsibility of Subcommittee D24.51 on Carbon Black
containsaforcemeasuringdevice.Therequiredforcetodetect
Pellet Properties.
the contact shall not exceed 2 cN (2 gf),
Current edition approved Aug. 15, 2012. Published October 2012. Originally
approved in 1992. Last previous edition approved in 2012 as D5230–12. DOI:
5.1.2 A means for applying the force at a constant rate,
10.1520/D5230-12A.
5.1.3 Ameans for transporting the pellet so to minimize its
2
The sole source of supply of the Concarb Titan Automated Pellet Hardness
movement during the application of force.
Tester known to the committee at this time is Jaron Technologies LLC, 2338
Duncan,Pampa,TX79065,E-mail:http://www.jarontech.com.TheHITECIPHTis
5.1.4 Ameans for measuring the diameter of the individual
available from HITEC Luxembourg, 5 rue de L’ Eglise, L-1458, Luxembourg,
pellet under test as measured along the axis of the application
E-mail: [e-mail], http://www.hitec.lu/. If you are aware of alternative
of force.
suppliers, please provide this information to ASTM International Headquarters.
5.1.5 A control device for directing the instrument through
Your comments will receive careful consideration at a meeting of the responsible
1
technical committee, which you may attend.
the test cycle that includes crushing the pellet under controlled
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
conditions, measuring and storing the results of the initial
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
diameter and crush force determinations, cleaning the frag-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. ments from the platen surfaces, and starting the next cycle.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. Unite
...

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: D5230 − 12 D5230 − 12a
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. 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 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 Black—Pellet Size Distribution
D1799 Practice for Carbon Black—Sampling Packaged Shipments
D1900 Practice for Carbon Black—Sampling Bulk Shipments
D4483 Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
3. Summary of Test Method
3.1 A sample of carbon black is passed through two sieves to isolate a fraction of uniform size. The most spherical pellets from
this portion are selected and placed into the tester. The individual pellets are pressed against a platen with a load cell for measuring
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 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.
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.
1
This test method is under the jurisdiction of ASTM Committee D24 on Carbon Black and is the direct responsibility of Subcommittee D24.51 on Carbon Black Pellet
Properties.
Current edition approved July 1, 2012Aug. 15, 2012. Published October 2012. Originally approved in 1992. Last previous edition approved in 20102012 as
D5230 – 10.D5230 – 12. DOI: 10.1520/D5230-12.10.1520/D5230-12A.
2
The sole source of supply of the Concarb Titan Automated Pellet Hardness Tester known to the committee at this time is Jaron Technologies LLC, 2338 Duncan, Pampa,
TX 79065, E-mail: http://www.jarontech.com. The HITEC IPHT is available from HITEC Luxembourg, 5 rue de L’ Eglise, L-1458, Luxembourg, E-mail: [e-mail],
http://www.hitec.lu/. If you are aware of alternative suppliers, please provide this information to ASTM International Headquarters. Your comments will receive careful
1
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 [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

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D5230 − 12a
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
platen with a minimum force. Typically one platen contains a force measuring device. The required force to detect the contact shall
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 m
...