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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The use of contoured crevice formers may be considered in such situations, but the use of a pitting test Practices A, C, or E should be considered. This service is not available if you are a URL user where you do not log in with an email address. When testing as-welded, cylindrical, or other non-flat samples, the standard crevice formers will not provide uniform contact. 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.
Testing by ASTM G48 for Pitting and Crevice Corrosion
Consequently, the degree of corrosion damage that occurs during testing will generally be greater than that in natural environments in any similar time period. Monitoring 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. The available pitting and crevice testing methods include: 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.
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. Read more about subscriptions. You need to log in before adding standards to the monitoring service.
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 E — Critical pitting temperature test for stainless steels.
Other units are given in parentheses for information only. Historical Version s – view previous versions of standard. Like what you saw? Method C — Critical pitting temperature test for nickel-base and chromium-bearing alloys. We follow a standard practice we have developed to minimize these variations and provide consistent data.
Method F — Critical crevice temperature test for stainless steels. However, the G48 test is meant for ranking or qualification, and not as designed for determining a corrosion rate over time.
NOK 1 ,00 excl. Not sure what you need? ASTM G 48 is a relatively severe test, but lack of definition in the standard can lead to variation of data.
No statement can be made about resistance of alloys in environments that do not contain chlorides. A web subscription provides an easy and secure access to g48-1, and you are guaranteed to always have the latest edition. Methods A and B are designed to cause the breakdown of Type at room temperature.
Which test do I need? A h air passivation after grinding or pickling is sufficient to minimize these differences 8. There are several factors that can influence the selection of methods; we can help you with this part of the process as well. Method D — Critical crevice temperature test for nickel-base and chromium-bearing alloys. Subscription – always available and updated A web subscription provides an easy and secure access to standards, and you are guaranteed to always have the latest edition.
There are 6 Methods: The asm pitting and crevice testing methods include:. Link to Active This link will always route to the current Active version of the standard. Please share this page: The moment new editions of the standards you monitor are released, changes are made, or appendixes are published, you will be alerted by email. Webprint Printed and bound.
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. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are g84-11 provided as part of the standard. Standards monitoring is a free service designed for you who wish to be alerted of axtm to or new editions of the standards required in your work. This ensures that you are always up-to-date and saves you both time and money.
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.
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ASTM G48 – 11(2015)
Grinding or pickling on stainless steel surfaces may destroy the passive layer. The benefits of a subscription: 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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