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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Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. 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.
The number is limited only by the number of glass cradles that can be? An equivalent area of copper shot or chips may be used. NOTE 6—Measures should be taken to minimize bumping of the solution when glass cradles are used to support specimens. The effect of galvanic coupling between copper and the test specimen may have importance 7. A small amount of copper shot eight a76 ten pieces on the bottom of the?
For any studies of IGA on Types,orthe indicated test methods are suggested.
The choices are listed in Table 1. The solution volume-to-sample area ratio shall be maintained. Evaluation by Weight Loss Different method of preparing steel test specimens are presented. Historical Version s – view previous versions of standard. If the document is revised or amended, you will be notified by email. Evaluation by Microscopical Examination See Table 1 for a listing of alloys for which Practice W is appropriate. However, if preliminary results are desired, the specimen can be removed at any time for weighing.
Such treatment of test specimens is not permissible, except in tests undertaken to demonstrate such surface effects. A trip balance may be used. Already Subscribed to this document. See Table 1 for a listing of alloys for which Practice W is appropriate. 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 — 93 8. For very heavy sections, specimens should be prepared to represent the appropriate surface while maintaining reasonable specimen size for convenience in testing.
The ferric sulfate-sulfuric acid solution may also selectively attack titanium carbides and nitrides in stabilized steels. Times for alloys not listed in Table 1 are subject to agreement between the supplier and the purchaser. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Report the corrosion rates as inches of penetration per month, calculated as follows: Begin timing the test period when the solution reaches the boiling point.
However, in the special case of surface carburization sometimes encountered, for instance, in tubing when carbonaceous lubricants are employed it may be possible by heavy grinding or machining to remove the carburized layer completely. More ferric sulfate must be added if the total weight loss of all specimens exceeds 2 g.
Combinations of alloys and test methods for which successful experience is available are shown in Table 1.
This test detects susceptibility to intergranular attack associated with the precipitation of chromium carbides or nitrides in stabilized and unstabilized ferritic stainless steels. Rinsing Prior to Examination 8. Determine qstm maximum angle of bend without causing cracks in such material by bending an untested specimen of the same con?
ASTM A() 铁素体不锈钢晶间腐蚀敏感性检测_百度文库
Specimens with unacceptable microstructures should be subjected to Practices X, Y, or Z to better determine their susceptibility to intergranular attack. Application of these standard tests to the other ferritic stainless steels will be by speci? The copper should be washed and degreased before use.
Preparation of Test Specimens 4. Application of these standard tests to the other ferritic stainless steels will be awtm specific agreement between producer and user. Standards Subsctiption may be the perfect solution.
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. If you feel that your comments have not received a fair a7663 you should make your views known to the ASTM Committee on Standards, at the address shown below.
Add the acid slowly to the water in the Erlenmeyer?
ASTM A Sensitization Testing of Ferritic Stainless Steel
It is important to ensure that the concentration of acid does not become asfm concentrated and that an adequate number of boiling chips which are resistant to attack by the test solution are present.
This will ensure detection of intergranular attack resulting from carburizing of one surface of sheet material during the? See Table 1 for a listing of alloys for which Practice W is appropriate. This w763 must be considered in selecting the test method.