ASTM B417-00(2006)e1
(Test Method)Standard Test Method for Apparent Density of Non-Free-Flowing Metal Powders Using the Carney Funnel
Standard Test Method for Apparent Density of Non-Free-Flowing Metal Powders Using the Carney Funnel
SIGNIFICANCE AND USE
This test method provides a guide for evaluation of the apparent density physical characteristic of powders. The density measured bears a relationship to the mass of powder that will fill a fixed volume die cavity when parts are being made. The degree of correlation between the results of this test method and the quality of powders in use will vary with each particular application.
SCOPE
1.1 This test method covers a procedure for determining the apparent density of non-free-flowing metal powders. It is designed for those metal powders that do not freely flow through the Hall flowmeter funnel.
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.
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´1
Designation:B417–00 (Reapproved 2006)
Standard Test Method for
Apparent Density of Non-Free-Flowing Metal Powders Using
the Carney Funnel
This standard is issued under the fixed designation B417; 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.
´ NOTE—Footnote 3 was editorially updated in May 2006.
1. Scope sity measured bears a relationship to the mass of powder that
will fill a fixed volume die cavity when parts are being made.
1.1 This test method covers a procedure for determining the
The degree of correlation between the results of this test
apparent density of non-free-flowing metal powders. It is
method and the quality of powders in use will vary with each
designed for those metal powders that do not freely flow
particular application.
through the Hall flowmeter funnel.
1.2 This standard does not purport to address all of the
6. Apparatus
safety concerns, if any, associated with its use. It is the
6.1 Powder Funnel —A Carney funnel (Fig. 1).
responsibility of the user of this standard to establish appro-
6.2 Density Cup —Acylindrical brass cup (Fig. 2) having a
priate safety and health practices and determine the applica-
capacity of 25 cm .The actual cup volume shall be determined
bility of regulatory limitations prior to use.
according to Test Method B873.
2. Referenced Documents 6.3 Stand—A stand (Fig. 1) to support the powder funnel
concentric with the density cup so that the bottom of the
2.1 ASTM Standards:
powder funnel is approximately 25 mm (1 in.) above the top of
B215 Practices for Sampling Metal Powders
the density cup when the apparatus is assembled as shown in
B243 Terminology of Powder Metallurgy
Fig. 1.
B873 Test Method for Measuring Volume of Apparent
6.4 Base—A level, vibration-free base to support the pow-
Density Cup Used in Test Methods B 212, B 329, and B
der flowmeter.
6.5 Balance, having a capacity of at least 200 g and a
3. Terminology
sensitivity of 0.01 g.
6.6 Wire, approximately 2.5 mm (0.10 in.) in diameter by
3.1 Definitions—Terms inTerminology B243 are applicable
150 mm (6 in.) in length.
to this test method.
7. Test Specimen
4. Summary of Test Method
7.1 The test specimen shall consist of a volume of approxi-
4.1 A container of definite volume is filled with non-free-
mately 30 to 40 cm of metal powder obtained in accordance
flowing powder under controlled conditions. The mass of
with Practices B215.
powder per unit volume is determined and reported as apparent
7.2 The test specimen shall be tested as sampled. Note,
density, Carney.
however, that temperature, moisture, oils, stearic acid, stear-
5. Significance and Use
ates, waxes, and so forth may alter the characteristics of the
powder.
5.1 This test method provides a guide for evaluation of the
apparent density physical characteristic of powders. The den-
8. Procedure
8.1 Weigh the empty density cup to the nearest 0.1 g or,
This test method is under the jurisdiction of ASTM Committee B09 on Metal
alternatively, place the empty density cup on the balance and
Powders and Metal Powder Products and is the direct responsibility of Subcom-
tare the balance to zero.
mittee B09.02 on Base Metal Powders.
Current edition approved April 1, 2006. Published May 2006. Originally
approved in 1964. Last previous edition approved in 2000 as B417 – 00. DOI:
10.1520/B0417-00R06E01. The sole source of supply of the flowmeter funnel, density cup, and stand
For referenced ASTM standards, visit the ASTM website, www.astm.org, or known to the committee at this time is Acu Powder International, LLC. If you are
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM aware of alternative suppliers, please provide this
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