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ASTM D1937-05

(Test Method)

Standard Test Method for Carbon Black, Pelleted—Mass Strength

Standard Test Method for Carbon Black, Pelleted—Mass Strength

SIGNIFICANCE AND USE
Mass strength gives an indication of the flowability in bulk handling. It is affected by pellet properties such as hardness, size, shape, and especially fines content. Due to the influence of other variables, the user and the producer must determine an acceptable mass strength level.
SCOPE
1.1 This test method covers the determination of the mass strength of pelleted carbon black. It is designed to determine the force required to pack of a cylindrical column of pelleted carbon black. The results of this test are believed to relate to the ability of the carbon black to flow in bulk handling systems.
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
30-Apr-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 D1937-03 - Standard Test Method for Carbon Black, Pelleted—Mass Strength
Effective Date
01-May-2005
Replaced By
ASTM D1937-10 - Standard Test Method for Carbon Black, Pelleted—Mass Strength
Effective Date
01-Jul-2010
Referred By
ASTM D3053-23 - Standard Terminology Relating to Carbon Black
Effective Date
01-May-2005
Referred By
ASTM D8466-22 - Standard Guide for Recovered Carbon Black—Carbon Black Test Methods for Testing rCB
Effective Date
01-May-2005

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ASTM D1937-05 - Standard Test Method for Carbon Black, Pelleted—Mass StrengthASTM D1937-05 - Standard Test Method for Carbon Black, Pelleted—Mass Strength
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ASTM D1937-05 - Standard Test Method for Carbon Black, Pelleted—Mass Strength
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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D1937–05
Standard Test Method for
1
Carbon Black, Pelleted—Mass Strength
This standard is issued under the fixed designation D1937; 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 hardness, size, shape, and especially fines content. Due to the
influence of other variables, the user and the producer must
1.1 This test method covers the determination of the mass
determine an acceptable mass strength level.
strength of pelleted carbon black. It is designed to determine
the force required to pack a cylindrical column with pelleted
5. Apparatus
carbonblack.Theresultsofthistestarebelievedtorelatetothe
3
5.1 Mass Strength Tester.
ability of the carbon black to flow in bulk handling systems.
5.2 Calibrating Block, made from a cylindrical wooden
1.2 The values stated in SI units are to be regarded as the
shaft, 47 mm (1.8 in.) in diameter and 250 mm (10 in.) long.
standard. The values given in parentheses are for information
4
5.3 Platform Scale, to 50-kg (100 lb) capacity with a
only.
sensitivity of 0.1 kg (0.02 lb) for air pressure gage calibration.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
6. Sampling
responsibility of the user of this standard to establish appro-
6.1 Samples shall be taken in accordance with Practices
priate safety and health practices and determine the applica-
D1799 or D1900.
bility of regulatory limitations prior to use.
7. Calibration
2. Referenced Documents
2 7.1 Remove the original faceplate from the pressure gage
2.1 ASTM Standards:
and replace with a blank plate made from aluminum or other
D1799 Practice for Carbon Black—Sampling Packaged
suitable material.
Shipments
7.2 Place the platform scale under the cylinder. With the
D1900 Practice for Carbon Black—Sampling Bulk Ship-
sliding door in an open position, pass the calibrating block
ments
through the cylinder so it will rest on the platform of the
D4483 Practice for Evaluating Precision for Test Method
platform scale. The top of the calibrating block shall be near
Standards in the Rubber and Carbon Black Manufacturing
the cylinder top. The calibrating block must fit freely in the
Industries
cylinder and not bind against any inside surface. Adjust the
platform scale for zero position with the calibrating block in
3. Summary of Test Method
place. Mark the zero position on the blank plate.
3.1 A sample of carbon black is placed in a cylinder and
7.3 Adjust the air-flow regulator until the needle on the air
pressed with a plunger for 10 s. The force required to pack the
pressure gage has moved from rest or zero position, to
carbonblacksothatitwillnotfalloutofthecylinderisdefined
one-third or more of total gage capacity.
as the mass strength.
7.4 Activate the timer, allowing the plunger to press against
4. Significance and Use the calibrating block. Measure the equivalent mass produced
by the plunger with the platform scale.
4.1 Mass strength gives an indication of the flowability in
7.5 Repeat 7.4, adjusting the regulator until even multiples
bulk handling. It is affected by pellet properties such as
of 50 N or 10 lbf are obtained. Mark the plate at these values.
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
3
Pellet Properties. The sole source of supply of the mass strength tester known to the committee
Current edition approved May 1, 2005. Published May 2005. Originally at this time is Titan Specialties, Inc., P.O. Box 2316, Pampa, TX 79066-2316. Test
approved in 1962. Last previous edition approved in 2003 as D1937 – 03. DOI: MethodD1937 – 84containsdetailsfortheconstructionofthisapparatus.Ifyouare
10.1520/D1937-05. aware of alternative suppliers, please provide this information to ASTM Interna-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or tional Headquarters. Your comments will receive careful consideration at a meeting
1
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM of the responsible technical committee, which you may attend.
4
Standards volume information, refer to the standard’s Document Summary page on AFairbanksMorseplatformscale,Model41–1000(beamsuffixFM)issuitable
the ASTM website. for this purpose.
Copyright ©ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D1937–05
7.6 Between each 50 N or 10 lbf mark on the plate, place be performed at a lower pressure t
...

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