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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Times for alloys not listed in Table 1 are subject to agreement between the supplier and the purchaser.
ASTM A Sensitization Testing of Ferritic Stainless Steel
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. 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. Link to Ashm This link will always route to the current Active version atm the standard. This test detects susceptibility to intergranular attack associated with the precipitation of chromium carbides and nitrides in stabilized and unstabilized ferric stainless steels.
Determine the aastm angle of bend without causing cracks in such material by bending an untested specimen of the same con? This will ensure detection of intergranular attack resulting from carburizing of one surface of sheet material during the? Heavy specimens may require bending in a? Immersion of the specimen-holding clamp in the etching solution should be avoided.
Supplementary requirements are noted as required. Times for steels not listed in Table 1 are subject to agreement between the supplier and the purchaser. NOTE 10—Cracks suspected as arising through poor ductility may be investigated by bending a similar specimen that was not exposed to the boiling test solution. If the sample is too thick, multiple specimens should be used.
Link to Active This link will always route to the current Active version of the standard. Application of these standard tests to the other ferritic stainless steels will be by specific agreement between producer and user.
You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. Already Subscribed to this document. Overall length shall be about mm 13 in. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.
Fresh test solution would not be needed if the test were to run 48 or 72 h. Report the corrosion rates as inches of penetration per month, calculated as follows: Your Alert Profile lists the documents that will be monitored.
An equivalent area of copper shot or chips may be used. It may also detect the presence of chi or sigma phase in these steels.
ASTM A() 铁素体不锈钢晶间腐蚀敏感性检测_百度文库
It is the responsibility of the user of this standard to establish appropriate ast and health practices and determine the applicability of regulatory limitations prior to use. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Ashm Headquarters. 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.
The tests can be run without interruption. Begin timing the test period when the solution reaches the boiling point. Current edition approved March 1, Combinations of alloys and test methods for which successful experience is available are shown in Table 1. Warning—Protect the eyes and face by face shield and use rubber gloves and apron when handling acid.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard ast are not provided as part of the standard.
It may be applied to wrought products and weld metal. However, several specimens may be tested astmm. Avoid excessive heat when dry-grinding. For very heavy sections, specimens should be prepared to represent the appropriate surface while maintaining reasonable specimen size for convenience in testing. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.
An air or hydraulic press may also be used for bending the specimens. Do not q763 sand- or grit-blasting. It may also be used to evaluate the effectiveness of stabilizing element additions Cb, Ti, etc. Add to Alert PDF.
This abstract is a brief summary of the referenced standard. This test detects susceptibility to intergranular attack associated with the precipitation of chromium carbides or nitrides in unstabilized and stabilized ferritic stainless steels.
ASTM A763 – 15
If any adherent copper remains on the specimen, it may be removed by a brief immersion in concentrated nitric acid at room temperature. All traces of oxide scale formed during heat treatment must be removed. 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.
It may be applied to wrought products. Different method of preparing steel test specimens are presented. This standard is subject to revision at asfm time by the responsible technical committee and must be reviewed every? Four practices, including Practice W, X, Y, and Z, are used for determining susceptibility to intergranular attack in ferritic stainless steel. The choices are listed in Table 1. If there is an appreciable change in the level, repeat the test with fresh solution and a reground specimen.
Preparation of Test Specimens 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.
The tests can be run without interruption for the time speci? It may also be used adtm evaluate the resistance of high purity or stabilized grades to sensitization to intergranular attack caused by welding or heat treatments.