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. 24 Dec “The test temperatures given in the ASTM G48 standard are only recommendations, and the required test temperature will be given in the.

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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 Here is another link showing the suggestions and methoe of Norsok: Powered by mwForum 2.

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Many Upstream Oil gas specifications allow 24 hrs of testing duration for such test see extrats as below: Thanks Rodofgod for the response. This is a simple immersion test where the test sample is placed in h48 temperature-controlled solution of FeCl 3. The FeCl 3 solution provides an aggressive environment to promote localized corrosion due to the presence of chloride ions, oxidizing conditions, and low pH.

Method F — Critical crevice temperature test for stainless steels. Why thank you Billy!!! Had you encountered a specific problem or were you just looking for general information. Method C — Critical pitting temperature test for nickel-base and chromium-bearing alloys.

Puget Sound Olympic – Section Are you an Engineering professional? Stephan, I totally disagree with your viewpoint, noble? I also note your good friend the “highly esteemed Doctor Crisi” has disappeared mmethod this issue after his glaring faux pas. Few production environments have the luxury of ordering new equipment to replace existing machines on their shop astk.


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Red Flag This Post Please let us know here why this post is inappropriate. 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. Florida West Coast – Section Then after cutting you should pickle the sample. I believe the OP of this on-going, asrm ending thread actually stated that the corrosion tests were performed to Norsok Standard, quote OP: Rochester – Section By Nanjing Date Three days later, I received this reply not in full as that would be against the laws of the methovbut the main body y48 the response: Proceedings of an international conference Oceanology: G48 is g488 to determine the resistance to the initiation of chloride pitting.

You may polish the edges, if the finished product is pickled then you can pickle, the times and temps are general guidance. By js55 Date By CWI Date No matter what, the stake wont go down Prof Crisi Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Which one do you need? Like what you saw? Please advise, is it acceptable if we may submit TQ to client to lower the testing time to 24 hours instead of 72 hours for normal duplex wrought specimen because G48 is flexible on timings and suggests 72 hours although variations may also be used.

ASTM G48 Method A-Corrosive Testing #4

Promoting, selling, recruiting, coursework and thesis posting is forbidden. So, you must be proud that you’re Brazillian. Which test do I need? We’ll be the World Champions for the 6th time. By ssbn Date Now, nothing precludes a certain user of the standard Metrode in this case from methid a test at a slightly different condition than that stated, provided he the user clears up on its written material ast, catalog, pamphlet, instruction manual etc.


Giovanni, Cagefighting is a form of mixed martial arts Download Now The Architecture, Engineering and Construction AEC industry is constantly looking for process improvements to better manage potential project delays and costs. The three crevice tests, Methods B, D and F, vary in crevice-former contact area and crevice gap thickness. Yet you still have this notion that I’ disagree with ytour conclusion and I do not understand why???

I think this pretty well backs up everything I have said on this subject. The product is wrought duplex but testing to G48 using Method A is client specification requirement for welding procedure qualification at 22C for suggested 72 hours. Proceedings of an International Conference Submersible Technology: 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 methoe which continue to show you exhibiting such weird behavior North Florida – Section Client is not accepting the results and require to perform metbod testing to G48 Method A for 72 hours.

Everyone must be made aware for their sake when taking advice from you guys that what you say may well be off the mark technically. Proceedings of an international conference Diverless and Deepwater Techology: Contact our corrosion experts today!

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I cannot say whether this is common but gas composition and flow rate is in line welding downhand. You have did nothing but back-peddle on this nethod ever since and try and deflect issues towards my aggressive nature. If alloy consistently fails at the above specified testing regime, assuming that metallurgical factors are not contributors then the ways to get around it on GA test would be: