Example of pitting after corrosion testing in accordance with ASTM G48 Method A . The test temperature of 22 °C is too aggressive for lean duplex grades such. Dear experts, The subjected testing was performed on Duplex steel for welding procedure qualification at testing temperature of 22C for. Abstract ASTM G48 – “Standard Test Methods for Pitting and Crevice Corrosion Resistance of Stainless Steels and Related Alloys by Use of Ferric Chloride.

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Method E — Critical pitting temperature test for stainless steels. Publishers Jethod Coverage Privacy. This paper will provide a brief overview of the standard and highlight several important points that can be sources of error or misunderstanding.

C tests at that temperature is clear that the microstructure have been affected. Practice A does not use acid. However all tests have to be documented, results v48 be assessed by client and fabricators, with the Maximum Engineering Integrity of the components being the prime criteria.

Corrosion Testing to ASTM G48 using Method A – Corrosion engineering – Eng-Tips

They asym similar test solutions but they are done for very different reasons. Unfortunately, if the client wants a 72 hour test, that is their prerogative. About us Contact us Help Terms of astmm. You decided to continue your utter lack of respect towards anyone, and I mean everyone in here by the way you chose to continue to express yourself in here billy!!!

Powered by mwForum 2. Click Here to join Eng-Tips and talk with other members! Perhaps not at temp long enough or not cooled quickly enough. Now we can metnod say that this is the END OF THE STORY, unless Bill decides to continue it with his denial which will only prove without any ambiguity that he’s obsessed with this thread and obsessed with having the last word, and in dire need of professional help because as far as I’m concerned Otherwise, for wrought it normally would revert to A for testing.

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What exactly is it? Not sure what you need?

As a welder, I take that as a resounding compliment!!! Lawrence, I’ve looked on the dictionary and didn’t find the word “cagefighter”. Red Flag This Post Please let us know here why this post is inappropriate.

It means that the recommendations are just that – Nothing less as well as Nothing more ,so I would appreciate it that you would NOT add words that clearly I did not write at all, because when you do so, you only start another round of confusion and mis-communication The crevice former contact area of Method B is a Other units are given in parentheses for information only.

This is a simple immersion test where the test sample is placed in a temperature-controlled solution of FeCl 3.

Ferric chloride is a mild solution in the G48 test? Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Henry, so well said — truly noble! Or at least do micros. Sheriff’s Encyclopedic Dictionary of Applied Geophysics, fourth edition. Where you cut a sample and grind the surfaces, no pickle or passivation allowed, and test in ferric chloride?

Were the pitting marks on the face surface, or the root surface?

Peer reviewed only Published between: Crisi Sao Paulo – Brazil. Go to this Youtube link and see some Anderson Sylva knockouts! Happy New Year too Mmethod You will see the planet freeze over before I apologize to you for something that is already a fact, and has been proven time and again in the first thread as well as in threads which continue to show you exhibiting such weird behavior I am not a chemical engineer but common sense would indicate that if it is used in an accelerated corrosion test it must be aggressive.


Crisi Date The recommended test time is 72 hours. By jrw Date G48 A method is designed to determine the relative pitting resistance of mehtod steels and nickel-base, chromium bearing alloys. Like what you saw? I mean, as when I hear pure CO2 – for this particular instance – it might eventually cause some issues with carbide formation asgm precipitation etc?

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Eventually in the ‘Metallurgy’ section? I am not a chemical engineer but common sense would indicate that if it is used in an methid corrosion test it must be aggressive.

I have a friend that is an engineer from Brazil. Methods A and B methoe designed to cause the breakdown of Type at room temperature. Rock Mechanics Symposium and 5th U.

I offer an olive branch, and instead of starting anew in the spirit of MUTUAL RESPECT, You continue with your unfortunate display of arrogance, and just plain outright nastiness that is unacceptable regardless of your title, position, or any other so-called entitlement which may have been granted to you in other forums, but is totally unacceptable as well as irrelevant in this one!

I don’t know any end users who test for 72 hours. Proceedings of an international conference Diverless and Deepwater Techology: G48 is looking to determine the resistance to the initiation of chloride pitting. Nevada – Section All surfaces shall be exposed. The futures history books will reflect a much different book than the present’s history. Secondly it confirms to me what I have found out on several occasions meanwhile.

I never disagreed with your conclusion, and in the original thread I acknowledged it also