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ASTM D1937-03

(Test Method)

Standard Test Method for Carbon Black, Pelleted—Mass Strength

Standard Test Method for Carbon Black, Pelleted—Mass Strength

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
09-Aug-2003
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 D1937-98e1 - Standard Test Method for Carbon Black, Pelleted—Mass Strength
Effective Date
10-Aug-2003
Replaced By
ASTM D1937-05 - Standard Test Method for Carbon Black, Pelleted—Mass Strength
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
10-Aug-2003
Referred By
ASTM D3053-23 - Standard Terminology Relating to Carbon Black
Effective Date
10-Aug-2003

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ASTM D1937-03 - Standard Test Method for Carbon Black, Pelleted—Mass StrengthASTM D1937-03 - Standard Test Method for Carbon Black, Pelleted—Mass Strength
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ASTM D1937-03 - 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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D1937–03
Standard Test Method for
1
Carbon Black, Pelleted—Mass Strength
This standard is issued under the fixed designation D 1937; 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.
1. Scope 5. Apparatus
3
1.1 This test method covers the determination of the mass 5.1 Mass Strength Tester.
strength of pelleted carbon black. It is designed to determine 5.2 Calibrating Block, made from a cylindrical wooden
the force required to pack of a cylindrical column of pelleted shaft, 47 mm (1.8 in.) in diameter and 250 mm (10 in.) long.
4
carbonblack.Theresultsofthistestarebelievedtorelatetothe 5.3 Platform Scale, to 50-kg (100 lb) capacity with a
ability of the carbon black to flow in bulk handling systems. sensitivity of 0.1 kg (0.02 lb) for air pressure gage calibration.
1.2 The values stated in SI units are to be regarded as the
6. Sampling
standard. The values given in parentheses are for information
6.1 Samples shall be taken in accordance with Practices
only.
1.3 This standard does not purport to address all of the D 1799 or D 1900.
safety concerns, if any, associated with its use. It is the
7. Calibration
responsibility of the user of this standard to establish appro-
7.1 Remove the original faceplate from the pressure gage
priate safety and health practices and determine the applica-
and replace with a blank plate made from aluminum or other
bility of regulatory limitations prior to use.
suitable material.
2. Referenced Documents
7.2 Place the platform scale under the cylinder. With the
2.1 ASTM Standards: sliding door in an open position, pass the calibrating block
through the cylinder so it will rest on the platform of the
D 1799 Practice for Carbon Black—Sampling Packaged
2
Shipments platform scale. The top of the calibrating block shall be near
the cylinder top. The calibrating block must fit freely in the
D 1900 Practice for Carbon Black—Sampling Bulk Ship-
2
ments 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
the calibrating block. Measure the equivalent mass produced
4. Significance and Use
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.
hardness, size, shape, and especially fines content. Due to the
7.6 Between each 50 N or 10 lbf mark on the plate, place
influence of other variables, the user and the producer must graduations representing each 10 N or 2 lbf. This may be done
determine an acceptable mass strength level.
from measurement, since the gage should be linear in calibra-
tion. Check these marks for accuracy with the platform scale.
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. Available from Titan Specialties, Inc., P.O. Box 2316, Pampa, TX 79066-2316.
Current edition approved Aug. 10, 2003. Published September 2003. Originally Test Method D 1937 – 84 contains details for the construction of this apparatus.
4
approved in 1962. Last previous edition approved in 1998 as D 1937 – 98. AFairbanksMorseplatformscale,Model41–1000(beamsuffixFM)issuitable
2
Annual Book of ASTM Standards, Vol 09.01 for this purpose.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D1937–03
5
7.7 From this calibrated gage plate, another gage plate may 10. Precision and Bias
be prepared by making the graduations coincide with those
10.1 These precision data are based on duplicate tests of
measured on the calibrated plate. All graduations shall be
four samples by four laboratories on two days. The range of
checked with the platform scale for accuracy.
samples studied was from about 5 N (1.1 lbf) to about 400 N
7.8 The calibrated air pressure gage shall be recalibra
...

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