ASTM D5230-00e1

Standard Test Method for Carbon Black—Automated Individual Pellet Hardness

SCOPE
1.1 This test method covers a procedure for measuring the crush strength of individual pellets 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: 09-May-2000
• Technical Committee: D24 - Carbon Black
• Drafting Committee: D24.51 - Carbon Black Pellet Properties

Relations

• Replaces: ASTM D5230-00 - Standard Test Method for Carbon Black-Automated Individual Pellet Hardness
• Effective Date: 10-May-2000
• Replaced By: ASTM D5230-00e2 - Standard Test Method for Carbon Black—Automated Individual Pellet Hardness
• Effective Date: 10-May-2000
• Referred By: ASTM D8466-22 - Standard Guide for Recovered Carbon Black—Carbon Black Test Methods for Testing rCB
• Effective Date: 10-May-2000
• Referred By: ASTM D5817-20 - Standard Practice for Carbon Black, Pelleted—Reduction, Blending, and Drying of Gross Samples for Testing
• Effective Date: 10-May-2000
• Referred By: ASTM D4122-17(2023) - Standard Practice for Carbon Black—Evaluation of an Industry Reference Black
• Effective Date: 10-May-2000
• Referred By: ASTM D3053-23 - Standard Terminology Relating to Carbon Black
• Effective Date: 10-May-2000

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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.
e1
Designation:D5230–00
Standard Test Method for
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Carbon Black—Automated Individual Pellet Hardness
This standard is issued under the fixed designation D 5230; 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 (e) indicates an editorial change since the last revision or reapproval.
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e NOTE—Footnote 2 was updated in December 2002.
1. Scope 4. Apparatus
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1.1 This test method covers a procedure for measuring the 4.1 Automated Pellet Hardness Tester, capable of achiev-
crush strength of individual pellets of carbon black by the ing an absolute measuring accuracy of 62 cN (2 gf) for the
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automated pellet hardness tester. force measurement and 60.1 mm for the diameter measure-
1.2 The values stated in SI units are to be regarded as the ment and a relative accuracy of 60.5 cN (0.5 gf) for the force
standard. The values in parentheses are for information only. measurement and 0.02 mm for the diameter measurement and
1.3 This standard does not purport to address all of the consisting of the following major components and character-
safety concerns, if any, associated with its use. It is the istics.
responsibility of the user of this standard to establish appro- 4.1.1 A means for automatic loading of a pellet on the
priate safety and health practices and determine the applica- transport platen for transporting the pellet so as to contact the
bility of regulatory limitations prior to use. second platen with a minimum force. Typically one platen
contains a force measuring device.The required force to detect
2. Referenced Documents
the contact shall not exceed 2 cN (2 gf),
2.1 ASTM Standards:
4.1.2 A means for applying the force at a constant rate,
D 1511 Test Method for Carbon Black—Pellet Size Distri- 4.1.3 A means for transporting the pellet so to minimize its
3
bution
movement during the application of force.
D 1799 Practice for Carbon Black—Sampling Packaged 4.1.4 A means for measuring the diameter of the individual
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Shipments
pellet under test as measured along the axis of the application
D 1900 Practice for Carbon Black—Sampling Bulk Ship- of force.
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ments
4.1.5 A control device for directing the instrument through
D 4483 Practice for Determining Precision for Test Method the test cycle that includes crushing the pellet under controlled
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Standards in the Rubber and Carbon Black Industries
conditions, measuring and storing the results of the initial
E 11 Specification for Wire-Cloth Sieves for Testing Pur- diameter and crush force determinations, cleaning the frag-
4
poses
ments from the platen surfaces, and starting the next cycle.
4.1.6 An algorithm for determining the individual test end
3. Significance and Use
point (determination) as the maximum observed force prior to
3.1 Pellet crush strength is related to several carbon black
the first occurrence of either a specified reduction in diameter
characteristics. Among these are mass strength and attrition.
or a specified reduction in force from the maximum force
The subsequent level of dispersion obtained in some mixed
observed,
compounds containing the carbon black may be affected by
4.1.7 A program for calculating for a specified number of
pellet crush strength. Acceptable pellet hardness must be
pellets the data as requested in Section 8, and
agreed to by the user and the producer.
4.1.8 Ameansforidentifying,viewing,printing,andstoring
the data in an ASCII file.
4.2 Mechanical Sieve Shaker, conforming to Test Method
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This test method is under the jurisdiction ofASTM Committee D24 on Carbon
D 1511.
Black and is the direct responsibility of Subcommittee D24.51 on Carbon Black
4.3 Sieves, U.S. Standard No. 12 (1700 µm) and No. 14
Pellet Properties.
Current edition approved May 10, 2000. Published July 2000. Originally
(1400 µm) conforming to E-11 shall be used to test grades of
published as D 5230 – 92. Last previous edition D 5230 – 99b.
black that can be segregated in a -12/+14 fraction. For grades
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The Concarb Titan Automated Pellet Hardness Tester is available from Titan
of black that are too small to be retained on a No. 14 sieve, i.e.,
Specialties, Inc., P.O. Box 2316, Pampa, TX 79065, E-mail:
acetylene and thermal blacks, it is acceptable to test with U.S.
[e-mail]. The HITEC IPHT is available from HITEC Luxem-
bourg, 5 rue de L’ Eglise, L-1458, Luxembourg, E-mail: [e-mail].
Standard No. 16 (1180 µm) and No. 18 (1000 µm) sieves.
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Annual Book of ASTM Standards, Vol 09.01.
4
Annual Book of ASTM Standards, Vol 14.02.
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