ASTM B330-20
Standard Test Method for Fisher Number of Metal Powders and Related Compounds

Standard No.

ASTM B330-20

Release Date

2020

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM B330-20

Scope

1.1 These test methods use air permeability to determine an envelope-specific surface area and its associated average equivalent spherical diameter (from 0.2 to 75µm) of metal powders and related compounds. The powders may be analyzed in their “as-supplied” (shipped, received, or processed) condition or after they have been de-agglomerated or milled by a laboratory procedure (“lab milled”) such as that specified in Practice B859. The values obtained are not intended to be absolute but are generally useful on a relative basis for control purposes. 1.2 Units—With the exception of the values for density and the mass used to determine density, for which the use of the gram per cubic centimetre (g/cm3 ) and gram (g) units is the longstanding industry practice; and the units for pressure, cm H2O also long-standing practice; the values in SI units are to be regarded as standard. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM B330-20 Referenced Document

• ASTM B243 Standard Terminology of Powder Metallurgy
• ASTM B859 Standard Practice for De-Agglomeration of Refractory Metal Powders and Their Compounds Prior to Particle Size Analysis
• ASTM E29 Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• ASTM E456 Standard Terminology for Relating to Quality and Statistics
• ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

ASTM B330-20 history

• 2020 ASTM B330-20 Standard Test Method for Fisher Number of Metal Powders and Related Compounds
• 2015 ASTM B330-15 Standard Test Methods for Estimating Average Particle Size of Metal Powders and Related Compounds Using Air Permeability
• 2012 ASTM B330-12 Standard Test Methods for Estimating Average Particle Size of Metal Powders and Related Compounds Using Air Permeability
• 2007 ASTM B330-07 Standard Test Method for Fisher Number of Metal Powders and Related Compounds
• 2005 ASTM B330-05 Standard Test Method for Fisher Number of Metal Powders and Related Compounds
• 2002 ASTM B330-02 Standard Test Method for Fisher Number of Metal Powders and Related Compounds
• 2000 ASTM B330-00 Standard Test Method for Fisher Number of Metal Powders and Related Compounds