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Laboratory Exposure Testing
Laboratory corrosion tests are the most common basis for development
information on which to base materials selection decisions. This
information can often be obtained through survey of the published literature
or from available handbooks. In cases where high precision or reliability
of test data is needed, it is recommended that corrosion data be developed
using samples taken from the actual materials to be used.
In some instances, there are standardized tests which can be utilized
developed through NACE, ASTM or other standards writing organization.
These standard methods make interpretation and comparison of the test
results with other data easier. However, in some cases, it is necessary
to conduct non-standard tests. Typically, these non-standard tests should
try to utilize standardized techniques wherever possible. Examples of
laboratory corrosion tests are those which evaluate for general corrosion,
pitting, crevice corrosion, galvanic corrosion, environmentally induced
cracking, corrosion fatigue and velocity accelerated corrosion.
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