ASTM B703-94(1999)e1

Standard Test Method for Apparent Density of Powders Using Arnold Meter

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.
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.

General Information

• Status: Historical
• Publication Date: 09-Sep-1999
• ICS: 77.160 - Powder metallurgy
• Technical Committee: B09 - Metal Powders and Metal Powder Products
• Drafting Committee: B09.02 - Base Metal Powders

Relations

• Replaced By: ASTM B703-05 - Standard Test Method for Apparent Density of Powders Using Arnold Meter
• Effective Date: 01-Oct-2005
• Referred By: ASTM B214-22 - Standard Test Method for Sieve Analysis of Metal Powders
• Effective Date: 10-Sep-1999
• Referred By: ASTM F3049-14(2021) - Standard Guide for Characterizing Properties of Metal Powders Used for Additive Manufacturing Processes
• Effective Date: 10-Sep-1999
• 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: 10-Sep-1999

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
e1
Designation:B703–94 (Reapproved 1999)
Standard Test Method for
Apparent Density of Powders Using Arnold Meter
This standard is issued under the fixed designation B 703; 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.
e NOTE—An editorial change was made in 9.4 in September 1999.
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.
1.3 This standard does not purport to address all of the 5.1 The apparent density is an important measure of a
safety concerns, if any, associated with its use. It is the material characteristic inherent in the powder, which is useful
to the powder producers as well as end users in determining lot
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- to lot consistency. Knowledge of the apparent density of the
final mix as obtained with this test method is very beneficial to
bility of regulatory limitations prior to use.
the powder metallurgy (P/M) parts fabricator for setting
2. Referenced Documents
compression ratios for fixed fill die cavities.
2.1 ASTM Standards: 5.2 This test method may be part of a purchase agreement
B 212 Test Method for Apparent Density of Free-Flowing between the powder manufacturer and P/M parts producer, or
Metal Powders it may be an internal quality control test for either party.
B 215 Practices for Sampling Finished Lots of Metal Pow-
2 6. Apparatus
ders
2 3
B 243 Terminology of Powder Metallurgy 6.1 Test Block —A hardened, tempered, and demagnetized
steel block (60 HRC Min.) having a center hole 31.6640 6
B 329 Test Method for Apparent Density Powders of Re-
fractory Metals and Compounds by Scott Volumeter 0.0025 mm (1.2466 6 0.0001 in.) and a height of 25.4000 6
0.0025mm(1.0000 60.0001in.)thatcorrespondstoavolume
B 417 Test Method for Apparent Density of Non-Free-
3 3
Flowing Metal Powders of 20 cm (1.22 in. ) (Fig. 1).
6.2 Bushing , either brass or bronze, approximately 38 mm
3. Terminology
(1.50 in.) inside diameter (ID) by 45 mm (1.75 in.) outside
3.1 Definitions—Useful definitions of terms for metal pow- diameter (OD) by 38 mm long (Fig. 1).
ders and powder metallurgy are found in Terminology B 243. 6.3 Weighing Paper—A sheet of cellophane or glazed or
3.2 Definitions of Terms Specific to This Standard: waxed paper measuring approximately 150 by 150 mm square
3.2.1 Arnold Density Meter—This instrument enables the (6.0 by 6.0 in.).
user to determine the density of any powder or mix, whether or 6.4 Balance—Abalance having a capacity of at least 200 g
not the powder has flow characteristics. It duplicates the action suitable for weighing to 0.01 g.
of the fill shoe of the press, consequently the values obtained
7. Sampling
on metal powders are approximately 0.2 g/cm higher than
7.1 ObtainatestsampleinaccordancewithPracticesB 215.
those obtained with the Hall, Test Method B 212; Carney, Test
Method B 417; or Scott, Test Method B 329, instruments. 7.2 The powder sample shall be of sufficient volume to fill
the bushing to about three quarters of its height.
This specification is under the jurisdiction of ASTM Committee B-9 on Metal
Powders and Metal Powder Productsand is the direct responsibility of Subcommit-
tee B09.02 on Base Metal Powders.
Current edition approved August 15, 19
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