scope:

This standard describes a method using Archimedes' principle for measuring the density of powder metallurgy products having surface-connected porosity. It is applicable to green, sintered and oil-impregnated specimens. The density of PM products is expressed in grams per cubic centimetre.

For a test method to determine the density of impermeable materials, see MPIF Standard 54.

Green Density, (ρ_g), is the mass per unit volume of an as-compacted PM part or test specimen. Normally the green density is determined on PM parts for quality control tests and for determining the compressibility of powders and mixes.

Sintered Density, (ρ_s), is the mass per unit volume of a sintered, non-oil-impregnated PM part. This term is synonymous with dry density.

Oil-Impregnated Density, (ρ_i), is the mass per unit volume of a sintered PM part impregnated with oil or other nonmetallic lubricant. This term is synonymous with wet density. Normally the density of sintered bearings is reported this way since they are supplied and used oil-impregnated.

With the exception of density, for which g/cm³ is the industry standard, SI units are used in this standard. Values in inch-pound units are shown in parentheses and result from conversions in accordance with IEEE/ASTM Standard SI 10. They may be approximate and are only for information.

This standard may involve hazardous materials, operations and equipment. This standard does not purport to address all of the potential safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use.