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
|Published (Last):||22 August 2006|
|PDF File Size:||18.59 Mb|
|ePub File Size:||12.97 Mb|
|Price:||Free* [*Free Regsitration Required]|
During the test, ferric sulfate is consumed at a rate of 10 g for each 1 g of dissolved stainless steel. Referenced Documents purchase separately The documents listed below are referenced a7663 the subject standard but are not provided as part of the standard. Supplementary requirements are noted as required. Heavy specimens may require bending in a?
NOTE zstm may be necessary to embed large specimens, such as from heavy bar stock, in copper shot on the bottom of the test?
Warning—Protect the eyes and face by face shield and use rubber gloves and apron when handling acid. Times longer than 24 h should be included in the test report. Historical Version s – view previous versions of standard. Combinations of alloys and test methods for which successful experience is available are shown awtm Table.
ASTM A763 – 15
Preparation of Test Specimens The bend test evaluations for the steel test specimens are presented. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. 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.
This test detects susceptibility to intergranular attack associated with the precipitation of chromium carbides or nitrides in unstabilized and stabilized ferritic stainless steels. Evaluation by Bend Test Please first log in with a verified email before subscribing to alerts. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. The sample is then rinsed in water and dried.
All traces of oxide scale formed during heat treatment must be removed. NOTE 2—Other equivalent means of specimen support such as glass hooks or stirrups may also be used. However, several specimens may be tested simultaneously. In the annealed condition, they are not subject to intergranular corrosion. See Sections 30 and It may also be used to evaluate the effectiveness of stabilizing element additions Cb, Ti, etc.
Combinations of alloys and test methods for which successful experience is available are shown in Table 1. 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.
If the document is revised or amended, you will be notified by email. Do not use sand- or grit-blasting. Last previous edition approved in as A — 93 e1. 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. This standard is also available to be included in Standards Subscriptions. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?
If there is an appreciable change in the level, repeat the test with fresh solution and a reground specimen.
ASTM A Sensitization Testing of Ferritic Stainless Steel
Grind the cross section on wet or dry 80 or grit abrasive paper followed by successively? NOTE 1—No substitution for this equipment may be used.
The effect of galvanic coupling between copper and the test specimen may have importance 7. C Preferred criterion, these criteria are the most sensitive for the particular combination of alloy and test.
A7663 samples should be bent in such a manner that weld and the heat-affected zone are strained. 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.
Determine the maximum angle of bend without causing cracks in such material by bending an untested specimen of the same con?
Immersion of the specimen-holding clamp in the etching solution should be avoided. The ferric sulfate-sulfuric acid solution may also selectively attack titanium carbides and nitrides in stabilized steels.
Link to Active This link will always route to the current Active version of the standard. NOTE 10—Cracks aastm as arising through poor ductility may be investigated by bending a similar specimen that was not exposed to the boiling test solution.
Overall length shall be about mm 13 in. As the voice of the U. They should have three or four holes in them to increase circulation of the test solution around the specimen. Link to Active This link will always route to the current Active version of the standard.
If any adherent copper remains on the specimen, it may be removed by a brief immersion in concentrated nitric acid at room temperature. For specific safety precautionary statements, see 3.