ASTM A763 PDF

Stainless Steels1. This trendy is issued below the constant designation a ; the range straight away following the designation suggests the yr. This standard is issued under the fixed designation A ; the 1 These practices are under the jurisdiction of ASTM Committee A01 on Steel. Last previous edition approved in as A – DOI: For referenced ASTM standards, visit the ASTM website, , or /A

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The number is limited only by the number of glass cradles that can be? Ordinarily, removal of more material than necessary will have little in? It may also be used to evaluate the resistance of high purity or stabilized grades to sensitization to intergranular attack caused by welding or heat treatments. Warning—Protect the eyes and face by face shield and use rubber gloves and apron when handling acid. More ferric sulfate must be added if the total weight loss of all specimens exceeds 2 g.

Times for alloys not listed in Table 1 are subject to agreement between the supplier and the purchaser. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Grain dropping is usually an indication of intergranular attack, but the number of dropped grains per unit area that can be tolerated is subject to agreement between the supplier and the purchaser.

Begin timing the test period when the solution reaches the boiling point. This test detects susceptibility to intergranular attack associated with the precipitation of chromium carbides and nitrides in stabilized and unstabilized ferric stainless steels. This standard is not included in any packages.

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Times for steels not listed in Table 1 are subject to agreement between the supplier and the purchaser. A copper cradle may also be used.

ASTM A Sensitization Testing of Ferritic Stainless Steel

NOTE 7—Conversion factors to other commonly z763 units for corrosion rates are as follows: Immersion of the specimen-holding clamp in the etching solution should be avoided. Already Subscribed to this document. D Weight loss measurements can be used to detect severely sensitized material, but they are not very sensitive for alloys noted with this superscript and may not detect slight or moderate sensitization.

Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. All other microscopical examinations are of the corroded surface under binocular examination see Section Practice W is used as a screening 7a63 to avoid the necessity, for acceptable specimens, of more extensive testing required by Asm X, Y, and Z.

Historical Version s – view previous versions of standard. Last previous edition approved in as A — 93 e1.

ASTM A() 铁素体不锈钢晶间腐蚀敏感性检测_百度文库

ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. NOTE 3—Loss of vapor results in concentration of the acid. The copper should be washed and degreased before use. The choices are listed in Table 1. If any adherent copper remains on the specimen, it may be removed by a brief immersion in concentrated nitric acid at room temperature.

Aa763 ferric sulfate-sulfuric acid solution may also s763 attack titanium carbides and nitrides in stabilized steels. Types,and are nonstabilized grades that are generally not used in the as-welded or sensitized condition in other than mildly corrosive environments. The bend test evaluations for the steel test specimens are presented. Practice W is used as a screening test to avoid the necessity, for acceptable specimens, of more extensive testing required by Practices X, Y, and Z.

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A superscript epsilon e indicates an editorial change since the last revision or reapproval. Rinsing Prior to Examination 8. Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards.

ASTM A763 – 15

NOTE 6—Measures should be taken to minimize bumping of the solution when glass cradles are used to support specimens. For detecting susceptibility to environments known to cause intergranular attack due to these wstm use Practice X. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application.

Times longer than 24 h should be included in the test report. Application of these standard tests to the other ferritic stainless steels will be by specific agreement between producer and user. This standard is also available to be included in Standards Subscriptions. As the voice of the U.

Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. Different method of preparing steel test specimens are presented. During the test, ferric sulfate is consumed at a rate of 10 g for each 1 g of dissolved stainless steel.

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