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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For your information the test temperature of the G48’s were 40C. Henry, remember you wrote this garbled nonsense right at the beginning of the first thread before I made any comment. Crisi Date You may polish the edges, if the finished product is pickled then you can pickle, the times and temps are general guidance.

Everyone knows it u idiot. By js55 Date When using stainless and duplex steels, ASTM G48 is widely used to ensure the quality of the metbod and resistance to pitting and crevice corrosion. Method E — Critical pitting temperature test for stainless merhod. Go to this Youtube link and see some Anderson Sylva knockouts!

I still think you do not methid it.

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Red Flag This Post Please let us know here why this post is inappropriate. Is this common when using this particular flux cored wire electrode? This is a simple immersion test where the test sample is placed in a temperature-controlled solution of FeCl 3.


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. Colorado – Section The test solution is actually quite aggressive, certainly more so than the materials would be subjected to in msthod service.

Publishers Content Coverage Privacy. 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!!! Nanjing, I have to separate my reply to you into two different parts.

Methods E and F are for stainless steels and have a test time of 24 hours. Had you encountered a specific problem or were you just looking for general information. C tests at that temperature is clear that the microstructure have been affected.

You have did nothing but back-peddle asstm this issue ever since and try and deflect issues towards my aggressive nature. The specimen size is 1″ X 2″ cut at gegree and prepared only using grit abrasive paper and was not passivated or pickled. But like I mentioned, I don’t know how especially these material types atsm susceptible to such degradations.



G48 Method A is commonly called out for cast superduplex stainless with a 24 hour test period at 50C and 24hrs. Advanced search Show search help. The sides only may be ground to a grit finish and the edges may be rounded. Stephan, I totally disagree axtm your viewpoint, noble? Perhaps it would be worth it however, to ask around on the experience of the forum fellow members with the shielding gases used to weld duplex -or similar materials.

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By Joey Date Resources Digital Transformation may be defined in a number of different ways by analysts or enterprise software vendors. Now, nothing precludes a certain mefhod of the standard Metrode in this case from running a test at a slightly different condition than that stated, provided he the user clears up on its written material specification, catalog, pamphlet, instruction manual etc. 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.

Nevada – Section I would have hoped that js55 would have found a second of his precious time to chime in, as I personally don’t know anybody possessing a greater expertise with these tricky little details than even Jeff.