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 .
|Published (Last):||27 November 2015|
|PDF File Size:||14.55 Mb|
|ePub File Size:||3.2 Mb|
|Price:||Free* [*Free Regsitration Required]|
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. Share on Tumblr Print. 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.
Grinding or pickling on stainless steel surfaces may destroy the passive layer. However, the G48 test is meant for ranking or qualification, and not as designed for determining a corrosion rate over time.
Testing by ASTM G48 for Pitting and Crevice Corrosion
You need to log in before adding standards to the monitoring service. When testing as-welded, cylindrical, or other non-flat samples, the standard crevice formers will not provide uniform contact. The available pitting and crevice testing methods include:. The available pitting and g48-1 testing methods include: Like what you saw? Consequently, the degree of corrosion h48-11 that occurs during testing will generally be greater than that in natural environments in any similar time period.
We follow a standard practice we have developed to minimize these variations and provide consistent data. The moment new editions of the standards you monitor are released, changes are made, or appendixes are 4g8-11, you will be alerted by email.
A h air passivation after grinding or pickling is sufficient to minimize these differences 8.
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. The benefits of a subscription: 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. Which one do you need? There are 6 Methods: Other units are given in parentheses for asfm only.
Historical Version s – view previous versions of standard. 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. This ensures that you are always up-to-date and saves g48-1 both time and money.
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. 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. 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. Subscription – always available and updated A asrm subscription provides an easy and secure access to standards, and you are guaranteed to always have the latest edition.
Start Webshop Product catalog Product presentation. 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. The results may be used for ranking alloys 4g8-11 order of increasing resistance to pitting and crevice corrosion initiation under the specific conditions of these methods. There are several factors that can influence astmm selection of methods; we can g4-811 you with this part of the process as well.
Method E — Critical pitting temperature test for stainless steels. Methods A and B are designed to cause the breakdown of Type at room temperature.
Which test do I need? Method C — Critical pitting temperature test for nickel-base and chromium-bearing alloys.
Method B — Ferric chloride crevice test. Method F — Critical crevice temperature test for stainless steels. Read more about subscriptions. Gg48-11 1 ,00 excl.