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ASTM D3313-99

(Test Method)

Standard Test Method for Carbon Black-Individual Pellet Hardness

Standard Test Method for Carbon Black-Individual Pellet Hardness

SCOPE
1.1 This standard describes a method for measuring the crush strength 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
09-May-1999
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

Replaced By
ASTM D3313-04 - Standard Test Method for Carbon Black-Individual Pellet Hardness
Effective Date
01-Dec-2004

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ASTM D3313-99 - Standard Test Method for Carbon Black-Individual Pellet Hardness
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D3313–99
Standard Test Method for
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 4. Apparatus
1.1 This standard describes a method for measuring the 4.1 Pellet-Hardness Tester, of a type capable of measuring
crush strength of individual pellets of carbon black. the crush strength of the individual pellet in grams-force
1.2 The values stated in SI units are to be regarded as the (millinewtons). A suitable tester must exhibit the following
standard. The values given in parentheses are for information characteristics:
only. 4.1.1 Initial contact force must be applied so that the force
1.3 This standard does not purport to address all of the area rests lightly on the pellet before proceeding,
safety concerns, if any, associated with its use. It is the 4.1.2 Itmustbecapableofapplyingforceataconstantrate,
responsibility of the user of this standard to establish appro- 4.1.3 It must possess an accurate means of measuring the
priate safety and health practices and determine the applica- applied force, and
bility of regulatory limitations prior to use. 4.1.4 During the test, the applied force and base plate must
be controlled so as not to cause the pellet to move or roll prior
2. Referenced Documents
to crushing.
2.1 ASTM Standards:
NOTE 2—A two-pan torsion balance with 100-g dial and transparent
D1511 Test Method for Carbon Black—Pellet Size Distri-
foot mounted so it can be moved directly over the pellet will serve to
bution
convert a balance to a pellet strength tester, as needed.
D1799 Practice for Carbon Black—Sampling Packaged
4.2 Mechanical Sieve Shaker, (see Test Method D1511).
Shipments
4.3 Sieves—U.S. Standard sieves or equivalents, conform-
D1900 Practice for Carbon Black—Sampling Bulk Ship-
ing to Specification E11. Sieves Nos. 12 (1700-µm) and 14
ments
(1400-µm) shall be used.
D4483 Practice for Determining Precision forTest Method
4.4 Bottom-Receiver Pan and Top-Sieve Cover.
Standards in the Rubber and Carbon Black Industries
4.5 Sample Splitter, single-stage, riffle-type.
E11 Specification for Wire-Cloth Sieves for Testing Pur-
4.6 Container, shallow, flat approximately 305 mm (12 in.)
poses
long.
4.7 Forceps, fitted with sponge tips. A very low-density
3. Significance and Use
urethane foam sponge has been found to be acceptable.
3.1 Pellet crush strength is related to several carbon black
characteristics. Among these are mass strength and attrition.
5. Sampling
The subsequent level of dispersion obtained in some mixed
5.1 Samples shall be taken in accordance with Practices
compounds containing the carbon black may be affected by
D1799 or D1900.
pellet crush strength. Acceptable pellet hardness must be
agreed to by the user and the producer.
6. Calibration
NOTE 1—Test Method D5230 is the preferred standard for testing of
6.1 Equipment used for this test shall be calibrated by dead
individual pellet crush strength. It is recognized that Test Method D3313
weights or a force-measuring device that will verify the
reliesonoperatorjudgement,thusaddinganadditionalsourceofvariation
accuracy of the equipment over the range to be tested.
for this test.
7. Procedure
1 7.1 Prepare a sample of carbon black, as follows:
This practice is under the jurisdiction of ASTM Committee D-24 on Carbon
Black and is the direct responsibility of Subcommittee D24.51 on Carbon Black
Pellet Properties.
Current edition approved May 10, 1999. Published June 1999. Originally The Model-S Pellet Strength Tester, A. L. Sweigart, Technical Service Shop,
published as D3313–74. Last previous edition D3313–95. 1206 Hemlock St., Borger,TX 79007, with lab jack has been found satisfactory for
Annual Book of ASTM Standards, Vol 09.01. this purpose.
3 5
Annual Book of ASTM Standards, Vol 14.02. A Ro-Tap sieve shaker has been found satisfactory for this purpose.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D3313–99
7.1.1 Pass the gross sample through the single stage, riffle- 9.2 The precision results in this precision and bias give an
type, sample splitter to obtain a representative sample of estimate of the precision as described below. The precision
approximately 100 g. The amount of riffled sample may be
parameters should not be used for acceptance/rejection testing
varied if the pellet fraction being collected is known or found
of any group of materials without documentation that they are
to be at extremes.
applicable to those particular materials and the specific testing
7.1.2 Stackthesievesinthefollowingorderfrombottomto
protocols that include this test method.
top: Bottom receiver pan, No. 14 (1400-µm) and No. 12
9.3 A Type 1 inter-laboratory precision program was con-
(1700-µm).Itispermissibletousemultiplesofsievestoscreen
ducted in 1
...

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