ASTM D4892-14(2019)e1

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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Designation: D4892 − 14 (Reapproved 2019)
Standard Test Method for
Density of Solid Pitch (Helium Pycnometer Method)
This standard is issued under the fixed designation D4892; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
ε NOTE—SI units formatting was corrected editorially throughout in July 2019.
1. Scope 3. Terminology
1.1 This test method covers the determination of pitch 3.1 Definitions of Terms Specific to This Standard:
density by helium pycnometer. It is applicable at a range of 3.1.1 density, as determined by this test method— the mass
room temperatures of 15 °C to 35 °C. per unit volume and shall be reported as follows:
1.2 The values stated in SI units are to be regarded as density, 25 °C, g/cm ~grams per cubic centimeter! (1)
standard. No other units of measurement are included in this
4. Summary of Test Method
standard.
1.3 This standard does not purport to address all of the
4.1 The sample is pulverized and screened to a given
safety concerns, if any, associated with its use. It is the fraction, then the volume of a weighed portion of the fraction
responsibility of the user of this standard to establish appro-
is determined using a helium pycnometer.
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
5. Significance and Use
1.4 This international standard was developed in accor-
5.1 This test method is useful in characterizing pitches as
dance with internationally recognized principles on standard-
one element in establishing uniformity of shipments and
ization established in the Decision on Principles for the
sources of supply. With this method, the density is determined
Development of International Standards, Guides and Recom-
totwodecimalplaces,whichissufficientformostapplications.
mendations issued by the World Trade Organization Technical
If a more precise measurement is required (three decimal
Barriers to Trade (TBT) Committee.
places), use Test Methods D2320 or D71.
2. Referenced Documents
6. Apparatus
2.1 ASTM Standards:
6.1 Helium Pycnometer.
D71 Test Method for Relative Density of Solid Pitch and
6.2 Balance, capable of weighing a 150 g specimen to
Asphalt (Displacement Method)
within 1 mg.
D2320 Test Method for Density (Relative Density) of Solid
Pitch (Pycnometer Method)
6.3 Sieves, U.S. Standard 2.36 mm (No. 8), 600 µm
D2962 Practice for Calculating Volume-Temperature Cor-
(No. 30), conforming to Specification E11.
rection For Coal-Tar Pitches
6.4 Thermometer, for measuring room temperature.
D4296 Practice for Sampling Pitch
E11 Specification for Woven Wire Test Sieve Cloth and Test
7. Bulk Sampling
Sieves
7.1 Samples from shipments shall be taken in accordance
with Practice D4296 and shall be free of foreign substances.
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
SubcommitteeD02.05onPropertiesofFuels,PetroleumCokeandCarbonMaterial.
CurrenteditionapprovedJune1,2019.PublishedJuly2019.Originallyapproved Helium pycnometers available from the following suppliers have been found
in 1989. Last previous edition approved in 2014 as D4892 – 14. DOI: 10.1520/ satisfactory for this purpose: (a) Beckman 2500 Harbor Blvd., Fullerton, CA, (b)
D4892-14R19E01. Micromeritics, 5680 Goshen Springs Rd., Norcross, GA, and (c) Quantachrome, 5
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Aerial Way, Syosset, NY. If you are aware of alternative suppliers, please provide
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM this information to ASTM International Headquarters. Your comments will receive
Standards volume information, refer to the standard’s Document Summary page on careful consideration at a meeting of the responsible technical committee, which
the ASTM website. you may attend.
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D4892 − 14 (2019)
TABLE 1 Volume Correction Factors Versus Measurement
8. Dehydration
Temperature
8.1 All bulk samples suspected of having free moisture
Measurement Temperature, °C Correction Factor
should be air-dried or oven-dried at 50 °C in a convection or
15 1.005
forced-air oven before analyzing.
16 1.004
17 1.004
9. Preparation of Test Specimen 18 1.003
19 1.003
9.1 Crush a 50 g to 200 g representative portion of the dry
20 1.002
21 1.002
pitch until all of it passes the 2.36 mm (No. 8 sieve). Avoid
22 1.001
grinding the pitch. Remove the fines by screening through the
23 1.001
600 µm (No. 30 sieve
...