ASTM B703-05

Standard Test Method for Apparent Density of Powders Using Arnold Meter

SIGNIFICANCE AND USE
The apparent density is an important measure of a material characteristic inherent in the powder that is useful to the powder producers and end users in determining lot to lot consistency. Knowledge of the apparent density of the final mix as obtained with this test method is very beneficial to the powder metallurgy (P/M) parts fabricator for setting compression ratios for fixed fill die cavities.
This test method may be part of a purchase agreement between the powder supplier and P/M parts producer, or it may be an internal quality control test for either party.
SCOPE
1.1 This test method covers a procedure for determining the apparent density of both free- and non-free-flowing powders, premixes, and blended mixes.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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.

General Information

• Status: Historical
• Publication Date: 30-Sep-2005
• ICS: 77.160 - Powder metallurgy
• Technical Committee: B09 - Metal Powders and Metal Powder Products
• Drafting Committee: B09.02 - Base Metal Powders

Relations

• Replaces: ASTM B703-94(1999)e1 - Standard Test Method for Apparent Density of Powders Using Arnold Meter
• Effective Date: 01-Oct-2005
• Replaced By: ASTM B703-10 - Standard Test Method for Apparent Density of Metal Powders and Related Compounds Using the Arnold Meter
• Effective Date: 01-Sep-2010
• Referred By: ASTM B855-22 - Standard Test Method for Volumetric Flow Rate of Metal Powders Using the Arnold Meter and Hall Flowmeter Funnel
• Effective Date: 01-Oct-2005
• Referred By: ASTM B214-22 - Standard Test Method for Sieve Analysis of Metal Powders
• Effective Date: 01-Oct-2005
• Referred By: ASTM F3049-14(2021) - Standard Guide for Characterizing Properties of Metal Powders Used for Additive Manufacturing Processes
• Effective Date: 01-Oct-2005

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:B703–05
Standard Test Method for
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Apparent Density of Powders Using Arnold Meter
This standard is issued under the fixed designation B703; 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* 4. Summary of Test Method
1.1 This test method covers a procedure for determining the 4.1 This test method consists of slowly sliding a bushing
apparent density of both free- and non-free-flowing powders, partially filled with powder over a hole in a hardened steel
premixes, and blended mixes. block, collecting and weighing the powder, and calculating its
1.2 The values stated in SI units are to be regarded as the apparent density.
standard. The values given in parentheses are for information
5. Significance and Use
only.
5.1 The apparent density is an important measure of a
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the material characteristic inherent in the powder that is useful to
the powder producers and end users in determining lot to lot
responsibility of the user of this standard to establish appro-
consistency. Knowledge of the apparent density of the final
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. mix as obtained with this test method is very beneficial to the
powder metallurgy (P/M) parts fabricator for setting compres-
2. Referenced Documents
sion ratios for fixed fill die cavities.
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2.1 ASTM Standards: 5.2 This test method may be part of a purchase agreement
B212 Test Method for Apparent Density of Free-Flowing between the powder supplier and P/M parts producer, or it may
Metal Powders Using the Hall Flowmeter Funnel be an internal quality control test for either party.
B215 Practices for Sampling Metal Powders
6. Apparatus
B243 Terminology of Powder Metallurgy
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6.1 Steel Block —Ahardened, tempered, and demagnetized
B329 Test Method for Apparent Density of Metal Powders
and Compounds Using the Scott Volumeter steel block (60 HRC Min.) having a center hole 31.6640 6
0.0025 mm (1.2466 6 0.0001 in.) in diameter and a height of
B417 Test Method for Apparent Density of Non-Free-
Flowing Metal Powders Using the Carney Funnel 25.4000 6 0.0025 mm (1.0000 6 0.0001 in.) that corresponds
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to a volume of 20 cm (1.22 in.)(Fig. 1).
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3. Terminology
6.2 Bushing , either brass or bronze, approximately 38 mm
3.1 Definitions—Useful definitions of terms for metal pow- (1.50 in.) inside diameter (ID) by 45 mm (1.75 in.) outside
ders and powder metallurgy are found in Terminology B243. diameter (OD) by 38 mm long (Fig. 1).
3.2 Definitions of Terms Specific to This Standard: 6.3 Weighing Paper—A sheet of cellophane or glazed or
3.2.1 Arnold Density Meter—This instrument enables the waxed paper measuring approximately 150 by 150 mm square
user to determine the density of any powder or mix, whether or (6.0 by 6.0 in.).
not the powder has flow characteristics. It simulates the action 6.4 Balance—Abalance having a capacity of at least 200 g
of the feed shoe of the press. The values obtained on metal suitable for weighing to 0.01 g.
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powders are approximately 0.2 g/cm higher than those ob-
7. Sampling
tained with the Hall, Test Method B212; Carney, Test Method
B417; or Scott, Test Method B329, instruments. 7.1 Obtain a test sample in accordance with Practices B215.
7.2 The powder sample shall be of sufficient volume to fill
the bushing to about three quarters of its height.
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This test method is under the jurisdiction of ASTM Committee B09 on Metal
Powders and Metal Powder Products and is the direct responsibility of Subcom-
mittee B09.02 on Base Metal Powders.
Current edition approved Oct. 1, 2005. Published October 2005. Originally
´1 3
approved in 1983. Last previous edition approved in 1999 as B703 – 94 (1999) . The sole source of supply of theArnold Density Meter complete with bushing
DOI: 10.1520/B0703-05. known to the committee at this time isArnold P/M Consulting Services, 648 Cedar
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*A Summary of Changes section appears at the end of this standard.
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