ASTM B873-01
(Test Method)Standard Test Method for Measuring Volume of Apparent Density Cup Used in Test Methods B212, B329, and B417
Standard Test Method for Measuring Volume of Apparent Density Cup Used 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 B 212, B 329, and B 417.
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 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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Designation:B873–01
Standard Test Method for
Measuring Volume of Apparent Density Cup Used in Test
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Methods B212, B329, and B417
This standard is issued under the fixed designation B 873; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 5. Significance and Use
1.1 This test method covers a procedure for measuring the 5.1 This test method enables the measurement of the vol-
volume of the apparent density cups used in Test Methods ume of the apparent density cup to ensure that it complies with
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B 212, B 329, and B 417. the specified volume of 25.00 6 0.03 cm (cylindrical cup), or
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1.2 The apparent density cup, particularly its rim, may 16.396 0.05 cm (square cup). Use of an out-of-specification
become worn during use, and it is recommended that the cup will give erroneous apparent density values using the
volume of the cup be checked periodically (at least every 6 formulae in Test Methods B 212, B 329, and B 417.
months) in order to ensure that it complies with the specified
6. Apparatus
volume.
1.3 This standard does not purport to address all of the 6.1 Density Cup—Acylindrical cup (see Fig. 1) designed to
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have a capacity of 25.00 6 0.03 cm (as in Test Methods
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- B 212, B 329, and B 417) or a square cup designed to have a
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capacity of 16.39 6 0.05 cm (as in Test Method B 329).
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. 6.2 Balance, suitable for weighing at least 200 g to the
nearest 0.001 g.
2. Referenced Documents
6.3 Microscope Slide—A transparent microscope slide at
2.1 ASTM Standards: least as wide as the outer diameter of the apparent density cup.
B 212 Test Method for Apparent Density of Free-Flowing 6.4 Water—Distilled or deionized water boiled to remove
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Metal Powders Using the Hall Flowmeter Funnel dissolved air.
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B 243 Terminology of Powder Metallurgy 6.5 Alcohol—Low residue ethyl alcohol.
B 329 Test Method forApparent Density of Metal Powders 6.6 Wire—Awire not exceeding 2.5 mm in diameter by 150
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and Compounds Using the Scott Volumeter mm long.
B 417 Test Method for Apparent Density of Non-Free- 6.7 Thermometer—A thermometer capable of measuring
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Flowing Metal Powders Using the Carney Funnel the temperature of the water to the nearest 1°C.
3. Terminology 7. Procedure
3.1 Definitions—Definitions of powder metallurgy terms 7.1 Boil at least 150 mL of distilled or deionized water for
can be found in Terminology B 243. Additional descriptive 5 min to remove dissolved air. Cool to room temperature and
information is available in the Related Materials section of Vol handle so as to avoid the introduction of air bubbles.
02.05 of the Annual Book of ASTM Standards. 7.2 Clean the density cup with alcohol and dry thoroughly.
7.3 Weigh,tothenearest0.001g,thedensitycupalongwith
4. Summary of Test Method
a clean, clear microscope slide. This is the tare mass, T.
4.1 The apparent density cup is filled with water and 7.4 Fill the density cup with the prepared water until the
weighed to obtain the mass of water contained, which is then
water overflows.
converted to a volume. 7.5 Dislodge any air bubbles inside the density cup with a
clean wire.
7.6 Slide the clean, clear microscope slide horizontally
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This test method is under the jurisdiction of ASTM Committee B09 on Metal
across the rim of the density cup, spilling the excess water over
Powders and Metal Powder Products and is the direct responsibility of Subcom-
the sides of the cup and center the microscope slide on top of
mittee B09.02 on Base Metal Powders.
Current edition approved Nov. 10, 2001. Published January 2002. Originally the cup.
published as B 873 – 96. Last previous edition B 873 – 96.
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Annual Book of ASTM Standards, Vol 02.05.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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B873–01
8. Calculation
8.1 Calculate the mass of water contained in the density cup
from the following formula:
M 5 G 2 T (1)
where:
M = mass of water in the density cup,
G = gross mass of density cup, plus water, plus micro-
scope slide, and
T = tare mass of density cup plus microscope slide.
8.2 Calculate the volume of the density cup, V, from the
following relationship:
M
V 5 (2)
r
w
where:
V = volume of the density cup,
M = mass of water in the density cup, and
r = density of the water from Table 1.
w
9. Report
9.1 Report the volume of th
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