ASTM B873-21

Standard Test Method for Measuring Volume of Apparent Density Cup Used in Test Methods B212, B329, and B417

SIGNIFICANCE AND USE
5.1 This test method enables the measurement of the volume of the apparent density cup to ensure that it complies with the specified volume of 25.00 ± 0.03 cm3  (cylindrical cup), or 16.39 ± 0.05 cm3  (square cup). Use of an out-of-specification cup will give erroneous apparent density values using the formulae in Test Methods B212, B329, and B417.
SCOPE
1.1 This test method covers a procedure for measuring the volume of the apparent density cups used in Test Methods B212, B329, and B417.  
1.2 The apparent density cup, particularly its rim, may become worn during use, and it is recommended that the volume of the cup be checked periodically (at least every 6 months) in order to ensure that it complies with the specified volume.  
1.3 Units—With the exception of the values for density and the mass used to determine density, for which the use of the gram per cubic centimetre (g/cm3) and gram (g) units is the long standing industry practice, the values in SI units are to be regarded as standard.  
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 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.

General Information

• Status: Historical
• Publication Date: 31-Aug-2021
• ICS: 17.060 - Measurement of volume, mass, density, viscosity
• Technical Committee: B09 - Metal Powders and Metal Powder Products
• Drafting Committee: B09.02 - Base Metal Powders

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: B873 − 21
Standard Test Method for
Measuring Volume of Apparent Density Cup Used in Test
1
Methods B212, B329, and B417
This standard is issued under the fixed designation B873; 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* B329 Test Method for Apparent Density of Metal Powders
and Compounds Using the Scott Volumeter
1.1 This test method covers a procedure for measuring the
B417 Test Method for Apparent Density of Non-Free-
volume of the apparent density cups used in Test Methods
Flowing Metal Powders Using the Carney Funnel
B212, B329, and B417.
E456 Terminology Relating to Quality and Statistics
1.2 The apparent density cup, particularly its rim, may
E691 Practice for Conducting an Interlaboratory Study to
become worn during use, and it is recommended that the
Determine the Precision of a Test Method
volume of the cup be checked periodically (at least every 6
months) in order to ensure that it complies with the specified 3. Terminology
volume.
3.1 Definitions—Definitions of powder metallurgy terms
1.3 Units—With the exception of the values for density and can be found in Terminology B243. Additional descriptive
the mass used to determine density, for which the use of the information is available under “General Information on PM”
3
gram per cubic centimetre (g/cm ) and gram (g) units is the on the ASTM B09 web page.
long standing industry practice, the values in SI units are to be
4. Summary of Test Method
regarded as standard.
4.1 The apparent density cup is filled with water and
1.4 This standard does not purport to address all of the
weighed to obtain the mass of water contained, which is then
safety concerns, if any, associated with its use. It is the
converted to a volume.
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
5. Significance and Use
mine the applicability of regulatory limitations prior to use.
5.1 This test method enables the measurement of the vol-
1.5 This international standard was developed in accor-
ume of the apparent density cup to ensure that it complies with
dance with internationally recognized principles on standard-
3
the specified volume of 25.00 6 0.03 cm (cylindrical cup), or
ization established in the Decision on Principles for the
3
16.39 6 0.05 cm (square cup). Use of an out-of-specification
Development of International Standards, Guides and Recom-
cup will give erroneous apparent density values using the
mendations issued by the World Trade Organization Technical
formulae in Test Methods B212, B329, and B417.
Barriers to Trade (TBT) Committee.
6. Apparatus
2. Referenced Documents
6.1 Density Cup—A cylindrical cup (see Fig. 1) designed to
2
2.1 ASTM Standards:
3
have a capacity of 25.00 6 0.03 cm (as in Test Methods B212,
B212 Test Method for Apparent Density of Free-Flowing
B329, and B417) or a square cup designed to have a capacity
Metal Powders Using the Hall Flowmeter Funnel
3
of 16.39 6 0.05 cm (as in Test Method B329).
B243 Terminology of Powder Metallurgy
6.2 Balance, readable to 0.0001 g with a minimum capacity
of 200 g.
1
This test method is under the jurisdiction of ASTM Committee B09 on Metal 6.3 Microscope Slide—A transparent microscope slide at
Powders and Metal Powder Products and is the direct responsibility of Subcom-
least as wide as the outer diameter of the apparent density cup.
mittee B09.02 on Base Metal Powders.
Current edition approved Sept. 1, 2021. Published September 2021. Originally 6.4 Water—Distilled or deionized water boiled to remove
approved in 1996. Last previous edition approved in 2017 as B873 – 17. DOI:
dissolved air.
10.1520/B0873-21.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 6.5 Alcohol—Low residue ethyl alcohol.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
6.6 Wire—A wire not exceeding 2.5 mm in diameter by 150
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. mm long.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
B873 − 21
A
TABLE 1 Density of Air-Free Water
3
Temperature (°C) ρ , Density (g/cm )
w
15 0.9991
16 0.9989
17 0.9988
18 0.9986
19 0.9984
20 0.9982
21 0.9980
22 0.9978
23 0.9975
24 0.9973
25 0.9970
26 0.9968
27 0.9965
28 0.9962
29 0.9959
30 0.9956
A
Metrological Handbook 145,“ Quality Assurance for Measurements
...

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: B873 − 17 B873 − 21
Standard Test Method for
Measuring Volume of Apparent Density Cup Used in Test
1
Methods B212, B329, and B417
This standard is issued under the fixed designation B873; 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 a procedure for measuring the volume of the apparent density cups used in Test Methods B212, B329,
and B417.
1.2 The apparent density cup, particularly its rim, may become worn during use, and it is recommended that the volume of the
cup be checked periodically (at least every 6 months) in order to ensure that it complies with the specified volume.
1.3 Units—With the exception of the values for density and the mass used to determine density, for which the use of the gram per
3
cubic centimetre (g/cm ) and gram (g) units is the long standing industry practice, the values in SI units are to be regarded as
standard.
1.4 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.5 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.
2. Referenced Documents
2
2.1 ASTM Standards:
B212 Test Method for Apparent Density of Free-Flowing Metal Powders Using the Hall Flowmeter Funnel
B243 Terminology of Powder Metallurgy
B329 Test Method for Apparent Density of Metal Powders and Compounds Using the Scott Volumeter
B417 Test Method for Apparent Density of Non-Free-Flowing Metal Powders Using the Carney Funnel
E456 Terminology Relating to Quality and Statistics
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
1
This test method is under the jurisdiction of ASTM Committee B09 on Metal Powders and Metal Powder Products and is the direct responsibility of Subcommittee B09.02
on Base Metal Powders.
Current edition approved April 1, 2017Sept. 1, 2021. Published November 2012September 2021. Originally approved in 1996. Last previous edition approved in 20122017
as B873 – 12.B873 – 17. DOI: 10.1520/B0873-17.10.1520/B0873-21.
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.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
B873 − 21
3. Terminology
3.1 Definitions—Definitions of powder metallurgy terms can be found in Terminology B243. Additional descriptive information
is available in the Related Materials section of Vol 02.05 of the under “General Information on PM” on the Annual Book of ASTM
Standards.ASTM B09 web page.
4. Summary of Test Method
4.1 The apparent density cup is filled with water and weighed to obtain the mass of water contained, which is then converted to
a volume.
5. Significance and Use
5.1 This test method enables the measurement of the volume of the apparent density cup to ensure that it complies with the
3 3
specified volume of 25.00 6 0.03 cm (cylindrical cup), or 16.39 6 0.05 cm (square cup). Use of an out-of-specification cup will
give erroneous apparent density values using the formulae in Test Methods B212, B329, and B417.
6. Apparatus
3
6.1 Density Cup—A cylindrical cup (see Fig. 1) designed to have a capacity of 25.00 6 0.03 cm (as in Test Methods B212, B329,
3
and B417) or a square cup designed to have a capacity of 16.39 6 0.05 cm (as in Test Method B329).
6.2 Balance, readable to 0.0001 g with a minimum capacity of 200 g to be used for determining mass to the nearest
0.001 g.
6.3 Microscope Slide—A transparent microscope slide at least as wide as the outer diameter of the apparent density cup.
6.4 Wa
...