ASTM D1937-98

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 mass strength 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-May-1998
• Technical Committee: D24 - Carbon Black
• Drafting Committee: D24.51 - Carbon Black Pellet Properties

Relations

• Replaced By: ASTM D1937-98e1 - Standard Test Method for Carbon Black, Pelleted—Mass Strength
• Effective Date: 10-May-1998
• Referred By: ASTM D8466-22 - Standard Guide for Recovered Carbon Black—Carbon Black Test Methods for Testing rCB
• Effective Date: 10-May-1998
• Referred By: ASTM D3053-23 - Standard Terminology Relating to Carbon Black
• Effective Date: 10-May-1998

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D1937–98
Standard Test Method for
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. Sampling
1.1 This test method covers the determination of the mass 5.1 Samples shall be taken in accordance with Practices
strength of pelleted carbon black. It is designed to determine D 1799 or D 1900.
the mass strength of a cylindrical column of pelleted carbon
6. Calibration
black.Theresultsofthistestarebelievedtorelatetotheability
of the carbon black to flow in bulk handling systems. 6.1 Remove the original faceplate from the pressure gage
and replace with a blank plate made from aluminum or other
1.2 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information suitable material.
6.2 Place the platform scale under the cylinder. With the
only.
1.3 This standard does not purport to address all of the sliding door in an open position, pass the calibrating block
through the cylinder so it will rest on the platform of the
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- platform scale. The top of the calibrating block shall be near
the cylinder top. The calibrating block must fit freely in the
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. cylinder and not bind against any inside surface. Adjust the
platform scale for zero position with the calibrating block in
2. Referenced Documents
place. Mark the zero position on the blank plate.
2.1 ASTM Standards: 6.3 Adjust the air-flow regulator until the needle on the air
D 1799 Practice for Carbon Black—Sampling Packaged pressure gage has moved from rest or zero position, to
Shipments one-third or more of total gage capacity.
D 1900 Practice for Carbon Black—Sampling Bulk Ship- 6.4 Activate the timer, allowing the plunger to press against
ments the calibrating block. Measure the equivalent mass produced
by the plunger with the platform scale.
3. Significance and Use
6.5 Repeat 6.4, adjusting the regulator until even multiples
3.1 Mass strength gives an indication of the flowability in of 50 N or 10 lbf are obtained. Mark the plate at these values.
bulk handling. Due to the influence of other variables, an
6.6 Between each 50 N or 10 lbf mark on the plate, place
acceptable mass strength level must be determined by the user graduations representing each 10 N or 2 lbf. This may be done
and the producer.
from measurement, since the gage should be linear in calibra-
tion. Check these marks for accuracy with the platform scale.
4. Apparatus
6.7 From this calibrated gage plate, another gage plate may
4.1 Mass Strength Tester.
be prepared by making the graduations coincide with those
4.2 Calibrating Block, made from a cylindrical wooden
measured on the calibrated plate. All graduations shall be
shaft, 47 mm (1.8 in.) in diameter and 250 mm (10 in.) long.
checked with the platform scale for accuracy.
4.3 Platform Scale, to 50-kg (100 lb) capacity with a
6.8 The calibrated air pressure gage shall be recalibrated at
sensitivity of 0.1 kg (0.02 lb) for air pressure gage calibration.
least once a month, or more frequently as deemed necessary.
7. Procedure
This test method is under the jurisdiction ofASTM Committee D-24 on Carbon
7.1 Clean the cylinder with a brush to remove any adhering
Black and is the direct responsibility of Subcommittee D24.51 on Carbon Black
carbon black. With the sliding door closed and the overflow
Pellet Properties.
Current edition approved May 10, 1998. Published October 1998. Originally cupinposition,pourcarbonblackpelletsintothecylinderuntil
published as D 1937 – 62 T. Last previous edition D 1937 – 95.
an excess of pellets forms a cone above the rim. Level the
Annual Book of ASTM Standards, Vol 09.01
surface with a single sweep of a s
...