ASTM B212-99

Standard Test Method for Apparent Density of Free-Flowing Metal Powders Using the Hall Flowmeter Funnel

SCOPE
1.1 This test method describes a procedure for determining the apparent density of free-flowing metal powders and is suitable for only those powders that will flow unaided through the specified Hall flowmeter funnel.
1.2 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-Apr-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 B212-99(2006) - Standard Test Method for Apparent Density of Free-Flowing Metal Powders Using the Hall Flowmeter Funnel
• Effective Date: 01-Apr-2006
• Referred By: ASTM B873-23 - Standard Test Method for Measuring Volume of Apparent Density Cup Used in Test Methods B212, B329, and B417
• Effective Date: 10-Apr-1999
• Referred By: ASTM B703-21 - Standard Test Method for Apparent Density of Metal Powders and Related Compounds Using the Arnold Meter
• Effective Date: 10-Apr-1999
• Referred By: ASTM B214-22 - Standard Test Method for Sieve Analysis of Metal Powders
• Effective Date: 10-Apr-1999
• Referred By: ASTM D7481-18 - Standard Test Methods for Determining Loose and Tapped Bulk Densities of Powders using a Graduated Cylinder
• Effective Date: 10-Apr-1999
• Referred By: ASTM F3049-14(2021) - Standard Guide for Characterizing Properties of Metal Powders Used for Additive Manufacturing Processes
• Effective Date: 10-Apr-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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
Designation:B212–99
Standard Test Method for
Apparent Density of Free-Flowing Metal Powders Using the
Hall Flowmeter Funnel
This standard is issued under the fixed designation B 212; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope will fill a fixed volume press cavity when parts are being made.
The degree of correlation between the results of this test and
1.1 This test method describes a procedure for determining
the quality of powders in use will vary with each particular
the apparent density of free-flowing metal powders and is
application.
suitable for only those powders that will flow unaided through
the specified Hall flowmeter funnel.
6. Apparatus
1.2 This standard does not purport to address all of the
6.1 Powder Flowmeter Funnel —A Hall flowmeter funnel
safety concerns, if any, associated with its use. It is the
(Fig. 1) having a calibrated orifice.
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 B 873.
2. Referenced Documents 6.3 Stand —A stand (Fig. 1) to support the Hall flowmeter
funnel concentric with the density cup so that the bottom of the
2.1 ASTM Standards:
Hall flowmeter funnel orifice is approximately 25 mm (1 in.)
B 215 Practices for Sampling Finished Lots of Metal Pow-
above the top of the density cup when the apparatus is
ders
assembled as shown in Fig. 1.
B 243 Terminology of Powder Metallurgy
6.4 Base—A level, vibration-free base to support the pow-
B 873 Test Method for Measuring the Volume of Apparent
der flowmeter.
Density Cup Used in Test Methods B 212, B 329, B 417
6.5 Balance, having a capacity of at least 200 g and a
3. Terminology sensitivity of 0.01 g.
3.1 Definitions—For definitions of terms used in this test
7. Test Specimen
method, see Terminology B 243.
7.1 The test specimen shall consist of a volume of approxi-
4. Summary of Test Method
mately 30 to 40 cm of metal powder obtained in accordance
with Practices B 215.
4.1 Avolumeofpowderispermittedtoflowintoacontainer
7.2 The test specimen shall be tested as sampled. Note,
of definite volume under controlled conditions. The mass of
however, that temperature, moisture, oils, stearic acid, stear-
powder per unit volume is determined and reported as apparent
ates, waxes, and so forth, may alter the characteristics of the
density, Hall.
powder.
5. Significance and Use
8. Procedure
5.1 This test method provides a guide for evaluation of the
8.1 Weigh the empty density cup to the nearest 0.1 g or,
apparent density physical characteristic of powders. The den-
alternatively, place the empty density cup on the balance and
sity measured bears a relationship to the mass of powder that
tare the balance to zero.
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- The sole source of supply of the apparatus known to the committee at this time
mittee B09.02 on Base Metal Powders. isAccu Powder International, LLC, 901 LehighAve., Union, NJ 07083-7632. If you
Current edition approved April 10, 1999. Published August 1999. Originally are aware of alternate suppliers, please provide this information to ASTM
e1
published as B 212 – 46 T. Last previous edition B 212 – 89 (1995) . Headquarters.Your comments will receive
...