ASTM B330-12
- Standard Test Methods for Estimating Average Particle Size of Metal Powders and Related Compounds Using Air Permeability
- standard by ASTM International, 11/01/2012
- Publisher: ASTM
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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.
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