ASTM B964-16

Standard Test Methods for Flow Rate of Metal Powders Using the Carney Funnel

SIGNIFICANCE AND USE
5.1 The rate and uniformity of die cavity filling are related to flow properties, which thus influence production rates and uniformity of compacted parts.  
5.2 The ability of a powder to flow is a function of interparticle friction. As interparticle friction increases, flow is slowed. Some powders, often fine powders and lubricated powder mixtures, may not flow through the Hall funnel of Test Method B213.. Nevertheless, if a larger orifice is provided, such as in the Carney funnel, a meaningful flow rate may be determined, providing specific information for certain applications.  
5.3 Test Method B213., using the Hall funnel, is the preferred method for determining the flowability of metal powders. The Carney funnel of these test methods should only be used when a powder will not flow through the Hall funnel. These test methods may also be used for comparison of several powders when some flow through the Hall funnel and some do not.  
5.4 Humidity and moisture content influence flow rate. Wet or moist powders may not flow through either the Hall or the Carney funnel.  
5.5 These test methods are based on flow of a specific mass of powder. If flow of a specific volume of powder is preferred, Test Method B855 may be used for powders that flow readily through the Hall funnel.  
5.6 These test methods may be part of the purchase agreement between powder suppliers and powder metallurgy (PM) part producers, or it can be an internal quality control test by either the supplier or the end user.
SCOPE
1.1 These test methods cover the determination of a flow rate, by use of the Carney funnel, of metal powders and powder mixtures that do not readily flow through the Hall funnel of Test Method B213.  
1.2 This is a non-destructive quantitative test performed in the laboratory.  
1.3 With the exception of the values for density and the mass used to determine density, for which the use of gram per cubic centimetre (g/cm3) and gram (g) units is the longstanding industry practice, the values in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only, and are not considered standard.  
1.4 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: 31-May-2016
• ICS: 77.160 - Powder metallurgy
• Technical Committee: B09 - Metal Powders and Metal Powder Products
• Drafting Committee: B09.02 - Base Metal Powders

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: B964 − 16
Standard Test Methods for
1
Flow Rate of Metal Powders Using the Carney Funnel
This standard is issued under the fixed designation B964; 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* 3.2 Definitions of Terms Specific to This Standard:
3.2.1 Carney flow rate (FR ), n—the time required for a
C
1.1 These test methods cover the determination of a flow
metal powder sample of specified mass to flow through the
rate, by use of the Carney funnel, of metal powders and powder
orifice in a Carney funnel according to a specified procedure.
mixtures that do not readily flow through the Hall funnel of
Test Method B213. 3.3 3 Additional descriptive information is available in the
Related Materials section of Vol 02.05 of the Annual Book of
1.2 This is a non-destructive quantitative test performed in
ASTM Standards.
the laboratory.
1.3 With the exception of the values for density and the
4. Summary of Test Methods
mass used to determine density, for which the use of gram per
4.1 A weighed mass of metal powder is timed as it flows
3
cubic centimetre (g/cm ) and gram (g) units is the longstanding
through the orifice of a Carney funnel.
industry practice, the values in inch-pound units are to be
regarded as standard. The values given in parentheses are
5. Significance and Use
mathematical conversions to SI units that are provided for
5.1 The rate and uniformity of die cavity filling are related
information only, and are not considered standard.
to flow properties, which thus influence production rates and
1.4 This standard does not purport to address all of the
uniformity of compacted parts.
safety concerns, if any, associated with its use. It is the
5.2 The ability of a powder to flow is a function of
responsibility of the user of this standard to establish appro-
interparticle friction. As interparticle friction increases, flow is
priate safety and health practices and determine the applica-
slowed. Some powders, often fine powders and lubricated
bility of regulatory limitations prior to use.
powder mixtures, may not flow through the Hall funnel of Test
Method B213. Nevertheless, if a larger orifice is provided,
2. Referenced Documents
such as in the Carney funnel, a meaningful flow rate may be
2
2.1 ASTM Standards:
determined, providing specific information for certain applica-
B213 Test Methods for Flow Rate of Metal Powders Using
tions.
the Hall Flowmeter Funnel
5.3 Test Method B213., using the Hall funnel, is the
B215 Practices for Sampling Metal Powders
preferred method for determining the flowability of metal
B243 Terminology of Powder Metallurgy
powders. The Carney funnel of these test methods should only
B855 Test Method for Volumetric Flow Rate of Metal
be used when a powder will not flow through the Hall funnel.
Powders Using the Arnold Meter and Hall Flowmeter
These test methods may also be used for comparison of several
Funnel
powders when some flow through the Hall funnel and some do
3. Terminology not.
3.1 Definitions of powder metallurgy (PM) terms can be 5.4 Humidity and moisture content influence flow rate. Wet
found in Terminology B243. or moist powders may not flow through either the Hall or the
Carney funnel.
5.5 These test methods are based on flow of a specific mass
1
These test methods are under the jurisdiction of ASTM Committee B09 on
of powder. If flow of a specific volume of powder is preferred,
Metal Powders and Metal Powder Products and are the direct responsibility of
Subcommittee B09.02 on Base Metal Powders.
Test Method B855 may be used for powders that flow readily
Current edition approved June 1, 2016. Published June 2016. Originally
through the Hall funnel.
approved in 2009. Last previous edition approved in 2009 as B964-09. DOI:
10.1520/B0964-16.
5.6 These test methods may be part of the purchase agree-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
ment between powder suppliers and powder metallurgy (PM)
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
part producers, or it can be an internal quality control test by
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. either the supplier or the end user.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
B964 − 16
6. Apparatus 9. Calibration of Apparatus
3
6.1 Carney Powder Flowmeter Funnel —A flowmeter fun- 9
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
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: B964 − 09 B964 − 16
Standard Test Methods for
1
Flow Rate of Metal Powders Using the Carney Funnel
This standard is issued under the fixed designation B964; 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 Scope*
1.1 These test methods cover the determination of a flow rate, by use of the Carney funnel, of metal powders and powder
mixtures that do not readily flow through the Hall funnel of Test Method B213.
1.2 This is a non-destructive quantitative test performed in the laboratory.
1.3 The values stated With the exception of the values for density and the mass used to determine density, for which the use
3
of gram per cubic centimetre (g/cm in SI) and gram (g) units is the longstanding industry practice, the values in inch-pound units
are to be regarded as standard. The values statedgiven in parentheses are mathematical conversions to SI units that are provided
for information only, converted according to IEEE/ASTM Standard SI 10.and are not considered standard.
1.4 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
2.1 ASTM Standards:
B213 Test Methods for Flow Rate of Metal Powders Using the Hall Flowmeter Funnel
B215 Practices for Sampling Metal Powders
B243 Terminology of Powder Metallurgy
B855 Test Method for Volumetric Flow Rate of Metal Powders Using the Arnold Meter and Hall Flowmeter Funnel
2.2 IEEE/ASTM Standard:
SI 10 American National Standard for Use of the International System of Units (SI): The Modern Metric System
3. Terminology
3.1 Definitions of powder metallurgy (PM) terms can be found in Terminology B243.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 Carney flow rate (FR ), n—the time required for a metal powder sample of specified mass to flow through the orifice in
C
a Carney funnel according to a specified procedure.
3.3 3 Additional descriptive information is available in the Related Materials section of Vol 02.05 of the Annual Book of ASTM
Standards.
4. Summary of Test Methods
4.1 A weighed mass of metal powder is timed as it flows through the orifice of a Carney funnel.
5. Significance and Use
5.1 The rate and uniformity of die cavity filling are related to flow properties, which thus influence production rates and
uniformity of compacted parts.
1
These test methods are under the jurisdiction of ASTM Committee B09 on Metal Powders and Metal Powder Products and are the direct responsibility of Subcommittee
B09.02 on Base Metal Powders.
Current edition approved April 1, 2009June 1, 2016. Published June 2009 June 2016. Originally approved in 2009. Last previous edition approved in 2009 as B964-09.
DOI: 10.1520/B0964-09.10.1520/B0964-16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. 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
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
B964 − 16
5.2 The ability of a powder to flow is a function of interparticle friction. As interparticle friction increases, flow is slowed. Some
powders, often fine powders and lubricated powder mixtures, may not flow through the Hall funnel of Test Method B213.
Nevertheless, if a larger orifice is provided, such as in the Carney funnel, a meaningful flow rate may be determined, providing
specific information for certain applications.
5.3 Test Method B213., using the Hall funnel, is the preferred method for determining the flowability of metal powders. The
Carney funnel of these test methods should only be used when a powder will not flow through the Hall funnel. These test methods
may also be used for comparison of several powders when some flow through the Hall funnel and some do not.
5.4 Humidity and moisture content influence flow rate. Wet or moist powders may not flow through either the Hall or the Carney
funnel.
5.5 These tes
...