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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Contact our corrosion experts today! Yet you still have this notion that I’ disagree with ytour conclusion and I do not understand why??? Which one do you need? I must say, however, that I don’t agree with Metrode when they say that the test temperatures given in ASTM G48 standard are only recommendations.

Most people think that university professors must know all what’s written on the Book of Universe since its ,ethod. Henry, remember you wrote this garbled nonsense right at the beginning of the first thread before I made any comment.

For your information the test temperature of the G48’s were 40C. When testing as-welded, cylindrical, or other non-flat samples, the standard crevice formers will not provide uniform contact. Go to this Youtube link and see some Anderson Sylva knockouts!

Or at least do micros.

G2MT Laboratories

Everyone knows it u idiot. Mtehod a previous post that has since been locked, I stated that I had also sent an email to Metrode, concerning the corrosive testing of duplex and super duplex filler wires, or as welded metal according to G48! 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.

This is really important because, if it was on the root surface then, the culprit would more than likely be the ppm level of Oxygen within the purging gas as being too high, if that is where the pitting marks were found. Giovanni, I’ve been to your country, have performed work there, and for it here. Peer reviewed only Published between: Colorado – Section Please put it to better use than to imitate someone who clips talking points as if they were in some sort of psuedo-political campaign, because there are professionals who do that for a living And it just goes on, and on, and on, and on Advanced search Show search help.


The valuable technical information you did provide: Locked and done with already!!! When using stainless and duplex steels, ASTM G48 is widely used to ensure the quality of the material and resistance to metuod and crevice corrosion.

Welding consumable manufacturer does not recommend it” Will it be ok?

No matter what, the stake wont go down Prof Crisi I am not a chemical engineer but common sense would indicate that if it is used in an accelerated corrosion test axtm must be aggressive. Exposure time shall be 24 hours. Firstly that was quite new to me and thus, I’ve been blessed again today by being allowed, to have learned something new. Giovanni, Cagefighting is a form of mixed martial arts Now, if you care to pretend to any sort of decency at all, you would adhere to such a promise of civility in here The recommended test time is 72 hours.

The FeCl 3 solution provides an aggressive environment to promote localized corrosion due to the presence aatm chloride ions, asmt conditions, and low pH.


The test solution is actually quite aggressive, certainly more so than the materials would be subjected to in normal service. Don’t play mix and match with test conditions and procedures. Share on Tumblr Print. Colorado — Section The valuable technical information you did provide: The crevice former contact area of Method B is a Other units are given in parentheses for information only.

Thank you for helping keep Eng-Tips Forums free from inappropriate posts. North Florida – Section 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.


Here is another link showing the suggestions and findings of Norsok: You have been wrong all along on this and everyone with any technical expertise will know it. Download Now White Paper: Everyone knows it u idiot. Now we can all 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 Such issues are the result of project complexity, size, uniqueness and regulation, as well as the need for virtual team collaboration.

The only reference from the OP regarding a Cr Super Duplex metal at all was when he was referring to the grade of filler wire used for the root pass which was deposited via GTAW Now, nothing precludes a certain user 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.

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The torque applied to the bolting assembly is 0. So, you must be proud that you’re Brazillian. She is neither third world nor underdeveloped. Unwelded base material or solution annealed welds will pass the test at higher temperatures. Please share this page: G48 A method is designed to determine the relative pitting resistance of stainless steels and nickel-base, chromium bearing alloys. Methods E and F are for stainless steels and have a test time of 24 hours.