scope:

This standard describes methods used to sample metal powders and the procedures that are recommended for reducing this sample into smaller test portions for subsequent testing.

A number of sampling practices are described. Their applicability depends on how the powder is stored or being transported through the process.

Practice 1A is applicable to sampling moving streams of powder such as those being transferred from one container to another, or those in a process stream or falling from a conveyor. This is the preferred method for obtaining the several increments that are combined to form the gross sample.

Practice 1B is applicable to sampling powders that have already been packaged for transport, as in a flexbag, bulkpack, or drum.

Practice 2 is applicable to obtaining test portions from the composite sample.

These practices apply to metal powders, and mixes or premixes of metal powders that may contain lubricants and other non-metallic additives.

This standard does not cover the sampling of flake powders or pastes. For procedures on the sampling of flake metal powders and pastes, refer to ASTM D480.

The values stated in inch-pound units are to be regarded as standard. Values in SI 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.

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.