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ASTM G 48 Document Information:
Title
Standard Test Methods for Pitting and Crevice Corrosion Resistance of Stainless Steels and Related Alloys by Use of Ferric Chloride Solution
ASTM International
Publication Date:
May 10, 2003
Scope:
These test methods cover procedures for the determination of the
resistance of stainless steels and
related alloys to pitting and crevice corrosion (see Terminology G 15)
when exposed to oxidizing
chloride environments. Six procedures are described and identified as
Methods A, B, C, D, E, and F.
Method A - Ferric chloride pitting test.
Method B - Ferric chloride crevice test.
Method C - Critical pitting temperature test for nickel-base and
chromium-bearing alloys.
Method D - Critical crevice temperature test for nickel-base and
chromium-bearing alloys.
Method E - Critical pitting temperature test for stainless steels.
Method F - Critical crevice temperature test for stainless steels.
Method A is designed to determine the relative pitting resistance of
stainless steels and
nickel-base, chromium-bearing alloys, whereas Method B can be used for
determining both the pitting
and crevice corrosion resistance of these alloys. Methods C, D, E and
F allow for a ranking of
alloys by minimum (critical) temperature to cause initiation of
pitting corrosion and crevice
corrosion, respectively, of stainless steels, nickel-base and
chromium-bearing alloys in a standard
ferric chloride solution.
These tests may be used to determine the effects of alloying
additives, heat treatment, and surface
finishes on pitting and crevice corrosion resistance.
The values stated in SI units are to be regarded as the standard.
Other units are given in
parentheses 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.
Keywords:
- crevice corrosion
- ferric chloride test solution
- localized corrosion
- nickel - base alloys
- pitting
- stainless steels
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