These practices cover sampling methods used to collect a small
quantity of metal powder that is as representative of the entire
starting material as possible, and details the procedures that are
recommended for reducing this quantity into smaller test portions
on which chemical, physical, and mechanical property data may be
Several sampling practices are described, depending on their
applicability to the conditions of storage and transport of the
Practice 1A (Described in Section 6)—Applicable to
sampling moving powders, as when being transferred from one
container to another or to a process stream; or when falling from a
conveyor; or in a moving process stream. This is the preferred
practice for obtaining the several increments that are combined to
form the gross sample.
Practice 1B (Described in Section 7)—Applicable to
sampling powders that have already been packaged for transport, as
in a bag or drum. A hollow tubular slot sampler is the recommended
way to sample these packaged powders to obtain the increments
(7.1.1). Alternatively, when other methods are not possible or
available, a procedure specified here (7.1.2) may be used to
randomly scoop samples from the powder, using a scoop of specified
material and configuration.
Practice 2 (Described in Section 8)—Applicable to
obtaining test portions from the composite sample. For larger
quantities of powder, a chute splitter is generally used, while a
spinning riffler is used for smaller quantities.
These practices apply to particulate materials or mixtures of
particulates with particle sizes generally less than one millimetre
and include mixtures containing lubricant, with or without other
non-metallic additives, that are ready for compacting.
These practices do not cover the sampling of flake powders or
pastes. For procedures on the sampling and testing of flake metal
powders and pastes, refer to Test Methods D480.
The values stated in inch-pound units are to be regarded as
standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and
are not considered standard.
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.
*A Summary of Changes section appears at the end of this
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