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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Gas evolved at the electrodes with entrained oxalic acid is poisonous and irritating. Such treatment of test specimens is not permissible, except in tests undertaken to demonstrate such surface effects. Already Subscribed to this document. This may be accomplished with 7a63 apparatus prescribed in 3. Times for steels not listed in Table 1 are subject to agreement between the supplier and the purchaser. This test detects susceptibility to intergranular attack associated with the precipitation of chromium carbides or nitrides in stabilized and unstabilized ferritic stainless steels.
If any adherent copper remains on the specimen, it may be removed by a brief immersion in concentrated nitric acid at room temperature.
ASTM A() 铁素体不锈钢晶间腐蚀敏感性检测_百度文库
Need more than one copy? It may also be used to evaluate the effectiveness of stabilizing element additions Cb, Ti, etc. Grind the cross section on wet or dry 80 or grit adtm paper followed by successively? X763 can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. It may be applied to wrought products and weld metal. However, if preliminary results are desired, the specimen can be removed at any time for weighing.
For any studies of IGA on Types,orthe indicated test methods are suggested. Warning—Protect the eyes and face by face shield and use rubber gloves and apron when handling acid. Preparation of Test Specimens 4. Historical Version s – view previous versions of standard.
ASTM A763 – 15
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.
Evaluation by Bend Test Combinations of alloys and test methods for which successful experience is available are shown in Table 1.
A — 93 8. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
All other microscopical examinations are of the corroded surface under binocular examination see Section It may be applied to wrought products. NOTE 9—Cracking that originates at the edge of the specimen should be disregarded. ASTM does not give any warranty express or implied or make any ast, that the contents of this abstract are accurate, complete or up to date. Please first verify your email before subscribing to alerts. Fresh test solution would not zstm needed if the test were to run 48 or 72 h.
Determine the maximum angle of bend without causing cracks in such material by bending an untested specimen of zstm same con? Begin timing the test period when the solution reaches the boiling point. If the document is revised or amended, you will be notified by email. It is ideal to have all the specimens in one? Specimens with unacceptable microstructures should be subjected to Practices X, Y, or Z to better determine their susceptibility to intergranular attack.
For specific safety precautionary statements, see 3. The sample is then rinsed in water asttm dried. Rinsing Prior to Examination 8. Application of these standard tests to the other ferritic stainless steels will be by speci?
Do not use sand- or grit-blasting. Your comments are invited either for revision of this standard or for asym standards and should be addressed to ASTM International Headquarters. This possibility must be considered in selecting the test method. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.
For specific safety a673 statements, see xstm. It is important to ensure that the concentration of acid astmm not become more concentrated and that an adequate number of boiling chips which are resistant to attack by the test solution are present. The ferric sulfate-sulfuric acid solution may also selectively attack titanium carbides and nitrides in stabilized steels.
It has been reported that violent boiling resulting in acid spills can occur. Evaluation by Microscopical Examination During the test, ferric sulfate is consumed at a rate of 10 g for each 1 g of dissolved stainless steel.
Times longer than 24 h should be included in the test report. To avoid scale entrapment, stamp specimens for identi?
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. Avoid excessive heat when dry-grinding. In the annealed condition, they are not subject to intergranular corrosion.
ASTM A Sensitization Testing of Ferritic Stainless Steel
Proceed to Checkout Continue Shopping. Your comments will receive careful consideration at a meeting asm the responsible technical committee, which you may attend. Current edition approved March 1, The solution volume-to-sample area ratio shall be maintained.