ASTM B212

This test method provides a guide for evaluation of an important physical characteristic of a powder known as the apparent density. The measured apparent density bears a relationship to the mass of powder that will fill a fixed volume die cavity. The degree of correlation between the results of this test and the performance of powders during use may vary with each particular application. Note, however, that the presence of moisture, oils, stearic acid, stearates, waxes, and the temperature of the powder mass may alter the physical characteristics of the powder.

1. Scope

1.1 This test method describes a procedure for determining the apparent density of free-flowing metal powders, and mixed powders; and is suitable for only those powders that will flow unaided through the specified Hall Flowmeter funnel.

1.2 With the exception of density values, for which the g/cm³ unit is the industry standard, the values stated in SI units are to be regarded as the standard. Values in inch-pound units are shown in parentheses and result from conversion in accordance with IEEE/ASTM Standard SI 10. They may be approximate and are only for information.

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 and health practices and determine the applicability of regulatory limitations prior to use.

2. Referenced Documents

ASTM Standards
B215 Practices for Sampling Metal Powders
B243 Terminology of Powder Metallurgy
B873 Test Method for Measuring Volume of Apparent Density Cup Used in Test Methods B 212, B 329, and B 417
IEEE/ASTM Standard
SI10 American National Standard for Use of the International System of Units (SI): The Modern Metric System

Index Terms

apparent density; Hall flowmeter funnel; metal powders; Density--metal powders (P/M); Free-flowing metal powders; Metal powders; ICS Number Code 77.160 (Powder metallurgy)

Citing ASTM Standards

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