ASTM G 31 Standard Practice for Laboratory Immersion Corrosion Testing of Metals
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ASTM G 31 Document Information:
Title
Standard Practice for Laboratory Immersion Corrosion Testing of Metals
ASTM International
Publication Date:
May 30, 1972
Scope:
This practice(Footnote 2) describes accepted procedures for and
factors that influence laboratory
immersion corrosion tests, particularly mass loss tests. These factors
include specimen
preparation, apparatus, test conditions, methods of cleaning
specimens, evaluation of results, and
calculation and reporting of corrosion rates. This practice also
emphasizes the importance of
recording all pertinent data and provides a checklist for reporting
test data. Other ASTM
procedures for laboratory corrosion tests are tabulated in the
Appendix. (Warning - In many cases
the corrosion product on the reactive metals titanium and zirconium is
a hard and tightly bonded
oxide that defies removal by chemical or ordinary mechanical means. In
many such cases, corrosion
rates are established by mass gain rather than mass loss.)
The values stated in SI units are to be regarded as the standard. The
values given in parentheses
are for information only.
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.
Footnote 2 - This practice is based upon NACE Standard TM-01-69, "Test
Method-Laboratory Corrosion
Testing of Metals for the Process Industries," with modifications to
relate more directly to
Practices G 1 and G 31 and Guide G 4.
Keywords:
- accelerated
- immersion
- laboratory
- mass loss
- metals
- pitting
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