ASTM B329/B329M-14

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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 − 06 (Reapproved 2012) B329 − 14
Standard Test Method for
Apparent Density of Metal Powders and Compounds Using
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 The values 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/cm ) and gram (g) units is the longstanding industry practice, 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
2.1 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 B 212, B 329, and B 417
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:
5.1.1 Top Funnels— A large funnel with a 16-mesh screen 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.
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, 2012Dec. 1, 2014. Published October 2012January 2015. Originally approved in 1958. Last previous edition approved in 20062012 as
B329 – 98 (2006).(2012). DOI: 10.1520/B0329-06R12.10.1520/B0329-14.
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
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B329 − 14
FIG. 1 Density Apparatus Assembly
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.
5.1.4 Density Cups— A cylindrical cup having a capacity of 25.00 6 0.03 cm , with an inside diameter of 28.00 6 0.50 mm;
3 3
28.00 6 0.50 mm; or a square cup with a capacity of 16.39 6 0.05 cm (1.000 6 0.003 in. ). Density cups may be either brass
or stainless steel.
5.1.5 Stand—A90° A 90° pivoting wooden or stainless steel stand to support the funnels and the baffle box concentric with the
density cup so that the bottom funnel lower opening is 19 mm ( ⁄4 in.) above the top of the density cup as shown in Fig. 1 when
using the cubic inch cup. Fig. 2 shows some suggested modifications for use of the metric cup. Modifications A and C of Fig. 2
FIG. 2 Suggested Methods of Modifying the Wooden Scott Volumeter for Metric Density Cup
B329 − 14
are suggested when the metric cup is to be used exclusively. Modification B of Fig. 2 is suggested when both cups are to be used
interchangeably.
5.2 Instrument Support—A stand or bench surface, level and vibration free.
5.3 Balance—A balance having balance, readable to 0.01 g with a capacity of at least 200 g and an accuracy of 60.05 g with
full-range taring capability. g, to determine the mass to the nearest 0.1 g.
5.4 Brush—A good quality, 25.4-mm (1-in.) wide brush, preferably nylon.
5.5 Spatula—A standard 12.7-mm ( ⁄2-in.) wide stainless steel laboratory spatula.
6. Test Specimen
...