Originally the ASTM website. 3 approved in Last previous edition approved in as G48– DOI: The last approved version of this historical standard. Buy ASTM G R TEST METHODS FOR PITTING AND CREVICE CORROSION RESISTANCE OF STAINLESS STEELS AND. The ASTM GA test (ferric chloride test) is widely used for pre-qualification of corrosion . The ASTM G for determining the CPT of stainless steel at fixed .
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A h air passivation after grinding or pickling is sufficient to minimize these differences 8. Method E — Critical pitting temperature test for stainless steels.
Monitoring Qstm monitoring is a free service designed for you who wish to be alerted of changes to or new editions of the standards required in your work. However, the G48 test is meant for ranking or qualification, and not as designed for determining a corrosion rate over time.
Consequently, the degree of corrosion damage that occurs during testing will generally be greater than that in natural environments in any similar astk period. There are 6 Methods: No statement can be made about resistance of alloys in environments that do not contain chlorides. Which one do you need?
ASTM G48 – 11(2015)
A and B are for qualification of alloys to pitting and crevice corrosion at specific temperatures, C and D are for determining the critical pitting and crevice corrosion temperatures of chromium and nickel alloys, and E and F are for stainless alloys. This service is not available if you are a URL user where you do not log in with an email address. NOK 1 ,00 excl. Therefore, grinding and pickling of the specimen will mean that the results may not be representative of the conditions of the actual piece from which the sample was taken.
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Testing by ASTM G48 for Pitting and Crevice Corrosion
Other units are given in parentheses for information only. In many ways, G is ideal for use instead of methods C-F as it is a more rapid method that can be performed within days instead of weeks.
Method B — Ferric chloride crevice test. Contact our corrosion experts today! This ensures that you are always up-to-date and saves you both aztm and money. Historical Version s – view previous versions of standard.
Start Webshop Product catalog Product presentation. The benefits of a subscription: ASTM G 48 is a relatively severe test, but lack of definition in the standard can lead to variation of data.
Method F — Critical crevice temperature test for stainless steels. Grinding or pickling on stainless steel surfaces may destroy the passive layer.
Methods C, D, E and F allow for a ranking of alloys by minimum critical temperature to cause initiation of pitting corrosion and crevice corrosion, respectively, of stainless steels, nickel-base and chromium-bearing alloys in a standard ferric chloride solution. Method A — Ferric chloride pitting ast.
The available pitting and crevice testing methods include:. You need to log in before adding standards to the monitoring service.
Method C — Critical pitting temperature test for nickel-base and chromium-bearing alloys. The use of contoured crevice formers may be considered in such situations, but the use of a pitting test Practices Gg48-11, C, or E should be considered.
Share on Tumblr Print. If you need to be able to add standards to the monitoring service, you must register as a user with your own username and password. When using stainless and duplex steels, ASTM G48 is widely used to ensure the quality of the material and resistance to pitting and crevice corrosion. When testing as-welded, cylindrical, or other non-flat samples, the standard crevice formers will not provide uniform contact.
There are several factors that can influence the selection of methods; we can help you with this part of the process as well. A web subscription provides an easy and secure access to standards, and you are guaranteed to always have the latest edition. 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.
Standards monitoring is a free service designed for you who wish to be alerted of changes to or new editions of the standards required in your work.
Not sure what you need? Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided astmm part of the standard. The results may be used for ranking alloys in order of increasing resistance to pitting and crevice corrosion initiation under the specific conditions of these methods.
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Our lab offers all 6 methods of this test as well as ASTM G, the electrochemical method for similar analysis. Link to Active This link will always route to the current Active version of the standard.
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Method D — Critical crevice temperature test for nickel-base and chromium-bearing alloys. Please share this page: Which test do I need?