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ASTM Standard measures particle size of metal powders.

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January 8, 2014 - Recent changes in technology are covered in ASTM B330, Test Methods for Estimating Average Particle Size of Metal Powders and Related Compounds Using Air Permeability. Metal powders tested by ASTM B330 are used in large and small precision parts in the automotive industry, as well as in various types of machinery and lighting products. New instrument referred to in standard is more precise, using sensitive pressure transducers instead of eyeball-estimated water column height to measure pressure.

New Instrumentation Reflected in ASTM Standard for Measuring Particle Size of Metal Powders


ASTM International
100 Barr Harbor Dr., Box C700
West Conshohocken, PA, 19428-2959
USA



Press release date: January 2, 2014

W. CONSHOHOCKEN, Pa. — Recent changes in technology are now covered in a significant ASTM International standard used to measure the particle size of metal powders. The standard, ASTM B330, Test Methods for Estimating Average Particle Size of Metal Powders and Related Compounds Using Air Permeability, is under the jurisdiction of Subcommittee B09.03 on Refractory Metal Powders, part of ASTM International Committee B09 on Metal Powders and Metal Powder Products.

The metal powders tested by ASTM B330 are used extensively in both large and small precision parts in the automotive industry, as well as in various types of machinery and lighting products. According to Frank Venskytis, an independent consultant and a past chairman of B09, the instrument that was referred to in the earlier editions of ASTM B330 is no longer available, nor is it supported with parts and service.

“Preliminary data indicates that the new instrument is more precise, using sensitive pressure transducers instead of an eyeball-estimated water column height to measure the pressure, which is the critical parameter that the particle size calculation depends upon,” says Venskytis. “Use of the new instrument, notice of its availability and the method for using it, are now included as part of ASTM B330.”

Venskytis also notes that the new instrument has become especially important in the refractory metals industry to assess the quality and efficacy of powders used in powder metallurgy practices.

“Many ceramics and lighting phosphor producers will also use B330 to estimate the particle size of their powders,” says Venskytis. “Many of these users have in-house testing and quality control laboratories in which B330 is used to control manufacturing processes and to certify powder products.”

Interested parties are invited to take part in an interlaboratory study using the new instrument per the instructions in the revised ASTM B330. B09.03 is interested in both donations of metal and related powders, as well as participation in testing.

Information on the older equipment has been retained in the standard, as numerous instruments of that type are still in use. 

To purchase ASTM standards, visit www.astm.org and search by the standard designation, or contact ASTM Customer Relations (phone: 877-909-ASTM; sales@astm.org). ASTM International welcomes participation in the development of its standards. For more information on becoming an ASTM member, visit www.astm.org/JOIN.

ASTM International is one of the largest international standards development and delivery systems in the world. ASTM International meets the World Trade Organization (WTO) principles for the development of international standards: coherence, consensus, development dimension, effectiveness, impartiality, openness, relevance and transparency. ASTM standards are accepted and used in research and development, product testing, quality systems and commercial transactions.

For more news in this sector, visit www.astm.org/sn-metals or follow us on Twitter @ASTMMetals.

ASTM Committee B09 Next Meeting: April 14-16, 2014, Hollywood, Fla.
Technical Contact: Frank Venskytis, Clayton, N.C., Phone: 919-553-8050; fvastm@embarqmail.com 
ASTM Staff Contact: Katerina Koperna, Phone: 610-832-9728; kkoperna@astm.org
ASTM PR Contact: Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org
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