ASTM B329-20
(Test Method)Standard Test Method for Apparent Density of Metal Powders and Compounds Using the Scott Volumeter
Standard Test Method for Apparent Density of Metal Powders and Compounds Using the Scott Volumeter
SIGNIFICANCE AND USE
4.1 This test method covers the evaluation of the apparent density physical characteristic of powders. The degree of correlation between the results of this test and the quality of powders in use will vary with each particular application and has not been fully determined.
4.2 The apparent density measured via this test method is often referred to as the “Scott Density.”
SCOPE
1.1 This test method covers determination of the apparent density of metal powders and related compounds using the Scott Volumeter, also known as the Paint Pigment Volumeter.
1.2 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 longstanding industry practice, the values stated in SI units are to be regarded as the standard.
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 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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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.
Designation: B329 − 20
Standard Test Method for
Apparent Density of Metal Powders and Compounds Using
1
the Scott Volumeter
This standard is issued under the fixed designation B329; 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.
1. Scope* E691 Practice for Conducting an Interlaboratory Study to
Determine the Precision of a Test Method
1.1 This test method covers determination of the apparent
density of metal powders and related compounds using the
3. Terminology
Scott Volumeter, also known as the Paint Pigment Volumeter.
3.1 Definitions—For definitions of terms used in this test
1.2 Units—With the exception of the values for density and
method, see Terminology B243.
the mass used to determine density, for which the use of the
3
gram per cubic centimetre (g/cm ) and gram (g) units is the
4. Significance and Use
longstanding industry practice, the values stated in SI units are
4.1 This test method covers the evaluation of the apparent
to be regarded as the standard.
density physical characteristic of powders. The degree of
1.3 This standard does not purport to address all of the
correlation between the results of this test and the quality of
safety concerns, if any, associated with its use. It is the
powders in use will vary with each particular application and
responsibility of the user of this standard to establish appro-
has not been fully determined.
priate safety, health, and environmental practices and deter-
4.2 The apparent density measured via this test method is
mine the applicability of regulatory limitations prior to use.
often referred to as the “Scott Density.”
1.4 This international standard was developed in accor-
dance with internationally recognized principles on standard-
5. Apparatus
ization established in the Decision on Principles for the
5.1 Fig. 1 shows the Scott Volumeter consisting of the
Development of International Standards, Guides and Recom-
following parts:
mendations issued by the World Trade Organization Technical
5.1.1 Top Funnels—Alarge funnel with a No. 16 (1.18 mm)
Barriers to Trade (TBT) Committee.
or a No. 18 (1 mm) screen per Specification E11, and a small
conical funnel for directing the powder into the baffle box.
2. Referenced Documents
2 Funnels and screen may be brass or stainless steel.
2.1 ASTM Standards:
5.1.2 Baffle Box—A box with two glass sides and two
B215 Practices for Sampling Metal Powders
wooden sides containing a series of four glass baffle plates.
B243 Terminology of Powder Metallurgy
The wooden baffle box may be substituted by a water-
B873 Test Method for Measuring Volume of Apparent Den-
resistant material, such as stainless steel, if washing is more
sity Cup Used in Test Methods B212, B329, and B417
desirable than air cleaning.
E11 Specification for Woven Wire Test Sieve Cloth and Test
5.1.3 Bottom Funnel—Asmall brass or stainless steel funnel
Sieves
directly beneath lower baffle box opening for directing the
E177 Practice for Use of the Terms Precision and Bias in
powder into the density cup.
ASTM Test Methods
5.1.4 Density Cups—A cylindrical cup having a capacity of
3
25.00 6 0.03 cm , with an inside diameter of
1
This test method is under the jurisdiction of ASTM Committee B09 on Metal
29.50 6 2.50 mm; or a square cup with a capacity of
3
Powders and Metal Powder Products and is the direct responsibility of Subcom-
16.39 6 0.05 cm and an inside dimension of 25.40 6
mittee B09.03 on Refractory Metal Powders.
0.02 mm. Density cups shall be either brass or non-magnetic
Current edition approved May 1, 2020. Published May 2020. Originally
stainless steel.
approved in 1958. Last previous edition approved in 2018 as B329 – 18. DOI:
10.1520/B0329-20.
5.1.5 Stand—A90° pivoting wooden or stainless steel stand
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
to support the funnels and the baffle box concentric with the
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
density cup so that the bottom funnel lower opening is 19 mm
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. above the top of the density cup as shown in Fig. 1 when using
*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
...
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: B329 − 18 B329 − 20
Standard Test Method for
Apparent Density of Metal Powders and Compounds Using
1
the Scott Volumeter
This standard is issued under the fixed designation B329; 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.
1. Scope*
1.1 This test method covers determination of the apparent density of metal powders and related compounds using the Scott
Volumeter, also known as the Paint Pigment Volumeter.
1.2 Units—With the exception of the values for density and the mass used to determine density, for which the use of the gram
3
per cubic centimetre (g/cm ) and gram (g) units is the longstanding industry practice, the values stated in SI units are to be regarded
as the standard.
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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.4 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:
B215 Practices for Sampling Metal Powders
B243 Terminology of Powder Metallurgy
B873 Test Method for Measuring Volume of Apparent Density Cup Used in Test Methods B212, B329, and B417
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
3. Terminology
3.1 Definitions—For definitions of terms used in this test method, see Terminology B243.
4. Significance and Use
4.1 This test method covers the evaluation of the apparent density physical characteristic of powders. The degree of correlation
between the results of this test and the quality of powders in use will vary with each particular application and has not been fully
determined.
4.2 The apparent density measured via this test method is often referred to as the “Scott Density.”
5. Apparatus
5.1 Fig. 1 shows the Scott Volumeter consisting of the following parts:
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 B09.03
on Refractory Metal Powders.
Current edition approved Oct. 1, 2018May 1, 2020. Published November 2018May 2020. Originally approved in 1958. Last previous edition approved in 20142018 as
B329 – 14.B329 – 18. DOI: 10.1520/B0329-18.10.1520/B0329-20.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. 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 ----------------------
B329 − 20
FIG. 1 Density Apparatus Assembly
5.1.1 Top Funnels—A large funnel with a No. 16 (1.18 mm) or a No. 18 (1 mm) screen per Specification E11, and a small
conical funnel for directing the powder into the baffle box. Funnels and screen may be brass or stainless steel.
5.1.2 Baffle Box—A box with two glass sides and two wooden sides containing a series of four glass baffle plates.
The wooden baffle box may be substituted by a water-resistant material, such as stainless steel, if washing is more desirable than
air cleaning.
5.1.3 Bottom Funnel—A small brass or stainless steel funnel directly beneath lower baffle box opening for directing the powder
into the density cup.
3
5.1.4 Density Cups—A cylindrical cup having a capacity of 25.00 6 0.03 cm , with an inside diameter of 29.50 6 2.50 mm; or
3
a square cup with a capacity of 16.39 6 0.05 cm and an inside dimension of 25.40 6 0.02 mm. Density cups shall be either bra
...
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