ASTM D1937-12

Standard Test Method for Carbon Black, Pelleted—Mass Strength

SIGNIFICANCE AND USE
4.1 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 a cylindrical column with 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: 31-May-2012
• ICS: 83.040.20 - Rubber compounding ingredients
• Technical Committee: D24 - Carbon Black
• Drafting Committee: D24.51 - Carbon Black Pellet Properties

Relations

• Replaces: ASTM D1937-10 - Standard Test Method for Carbon Black, Pelleted—Mass Strength
• Effective Date: 01-Jun-2012
• Replaced By: ASTM D1937-13 - Standard Test Method for Carbon Black, Pelleted—Mass Strength
• Effective Date: 01-Jun-2013
• Referred By: ASTM D3053-23 - Standard Terminology Relating to Carbon Black
• Effective Date: 01-Jun-2012
• Referred By: ASTM D8466-22 - Standard Guide for Recovered Carbon Black—Carbon Black Test Methods for Testing rCB
• Effective Date: 01-Jun-2012

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 − 12
StandardTest 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 4. Significance and Use
1.1 This test method covers the determination of the mass 4.1 Mass strength gives an indication of the flowability in
strength of pelleted carbon black. It is designed to determine bulk handling. It is affected by pellet properties such as
the force required to pack a cylindrical column with pelleted hardness, size, shape, and especially fines content. Due to the
carbonblack.Theresultsofthistestarebelievedtorelatetothe influence of other variables, the user and the producer must
ability of the carbon black to flow in bulk handling systems. determine an acceptable mass strength level.
1.2 The values stated in SI units are to be regarded as the
5. Apparatus
standard. The values given in parentheses are for information
3
5.1 Mass Strength Tester, with a flat compression cylinder
only.
of 50.8 mm (2 in.) diameter.
1.3 This standard does not purport to address all of the
5.2 Calibrating Block, made from a cylindrical wooden
safety concerns, if any, associated with its use. It is the
shaft, 47 mm (1.8 in.) in diameter and 250 mm (10 in.) long.
responsibility of the user of this standard to establish appro-
4
priate safety and health practices and determine the applica-
5.3 Platform Scale, to 50-kg (100 lb) capacity with a
bility of regulatory limitations prior to use.
sensitivity of 0.1 kg (0.02 lb) for air pressure gage calibration.
5.4 Overflow Cup to Fit Around Cylinder, normally part of
2. Referenced Documents
the apparatus delivery.
2
2.1 ASTM Standards:
5.5 Spatula, with a straight edge of at least 55 mm (2.2 in.).
D1799 Practice for Carbon Black—Sampling Packaged
Shipments
6. Sampling
D1900 Practice for Carbon Black—Sampling Bulk Ship-
6.1 Samples shall be taken in accordance with Practices
ments
D1799 or D1900.
D4483 Practice for Evaluating Precision for Test Method
Standards in the Rubber and Carbon Black Manufacturing
7. Calibration
Industries
7.1 Remove the original faceplate from the pressure gage
3. Summary of Test Method
and replace with a blank plate made from aluminum or other
3.1 Asample of carbon black is placed in a vertical cylinder suitable material.
and pressed with a plunger for 10 s after which the bottom of
7.2 Place the platform scale under the cylinder. With the
thecylinderisopened,whereuponallofthecarbonblackeither
sliding door in an open position, pass the calibrating block
falls out the bottom or forms a ring or bridge in the cylinder.
through the cylinder so it will rest on the platform of the
The process is repeated with a new sample until the minimum
platform scale. The top of the calibrating block shall be near
force required for the carbon black to form a ring or bridge is
the cylinder top. The calibrating block must fit freely in the
found. The resultant force is called mass strength and is
cylinder and not bind against any inside surface. Adjust the
reported in Newtons (lbf).
platform scale for zero position with the calibrating block in
place. Mark the zero position on the blank plate.
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 June 1, 2012. Published August 2012. 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 2010 as D1937 – 10. DOI: MethodD1937 – 84containsdetailsfortheconstructionofthisapparatus.Ifyouare
10.1520/D1937-12. 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 [e-mail]. 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

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D1937 − 12
7.3 Adjust the air-flow regulator until the needle on the air 8.4 After
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D1937 − 10 D1937 − 12
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
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 a cylindrical column with 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D1799 Practice for Carbon Black—Sampling Packaged Shipments
D1900 Practice for Carbon Black—Sampling Bulk Shipments
D4483 Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries
3. Summary of Test Method
3.1 A sample of carbon black is placed in a vertical cylinder and pressed with a plunger for 10 s. The force required to pack
the carbon black so that it will not fall out s after which the bottom of the cylinder is defined as the mass strength.opened,
whereupon all of the carbon black either falls out the bottom or forms a ring or bridge in the cylinder. The process is repeated with
a new sample until the minimum force required for the carbon black to form a ring or bridge is found. The resultant force is called
mass strength and is reported in Newtons (lbf).
4. Significance and Use
4.1 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.
5. Apparatus
3
5.1 Mass Strength Tester, with a flat compression cylinder of 50.8 mm (2 in.) diameter.
5.2 Calibrating Block, made from a cylindrical wooden shaft, 47 mm (1.8 in.) in diameter and 250 mm (10 in.) long.
4
5.3 Platform Scale, to 50-kg (100 lb) capacity with a sensitivity of 0.1 kg (0.02 lb) for air pressure gage calibration.
5.4 Overflow Cup to Fit Around Cylinder, normally part of the apparatus delivery.
5.5 Spatula, with a straight edge of at least 55 mm (2.2 in.).
1
This test method is under the jurisdiction of ASTM Committee D24 on Carbon Black and is the direct responsibility of Subcommittee D24.51 on Carbon Black Pellet
Properties.
Current edition approved July 1, 2010June 1, 2012. Published August 2010August 2012. Originally approved in 1962. Last previous edition approved in 20052010 as
D1937 – 05.D1937 – 10. DOI: 10.1520/D1937-10.10.1520/D1937-12.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
The sole source of supply of the mass strength tester known to the committee at this time is Titan Specialties, Inc., P.O. Box 2316, Pampa, TX 79066-2316. Test Method
D1937 – 84 contains details for the construction of this apparatus. If you are aware of alternative suppliers, please provide this information to ASTM International
1
Headquarters. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
4
A Fairbanks Morse platform scale, Model 41–1000 (beam suffix FM) is suitable for this purpose.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D1937 − 12
6. Sampling
6.1 Samples shall be taken in accordance with Practices D1799 or D1900.
7. Calibration
7.1 Remove the original faceplate from the pressure gage and replace with a blank plate made from aluminum or other suitable
material.
7.2 Place the platform scale under the cylinder. With the
...