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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In a previous post that has since been locked, I stated that I had also meethod an email to Metrode, concerning the corrosive testing of duplex and super duplex filler wires, or as welded metal according to G48!
We’ll be the World Champions for the 6th time. The sides only may be ground to a grit finish and the edges may be rounded. Arizona – Section I say like Socrates one of the greatest philosophers Human Kind has ever hadsaid: I thought we at least agreed to stop hurling insults at each other starting especially in the open part of the asttm Furthermore did you notice the presence of pits scattered on the entire surface of specimens or they are localized for example in the HAZ region?
Contact our corrosion experts today! Ed, The issue is not confused. And it just goes on, and on, and on, and on I am not a chemical engineer but common metjod would indicate that if it is used in an accelerated corrosion test it must be aggressive. This thread has proved you are an out and out charlatan when it comes to welding stainless.
Corrosion Testing to ASTM G48 using Method A – Corrosion engineering – Eng-Tips
Unwelded base material or solution annealed welds will aa the test at higher temperatures. So, you must be proud that you’re Brazillian. There are 6 Methods: Hi Syed, Passing G48A test is always a challenge to welding engineers. The three crevice tests, Methods B, D and F, vary in crevice-former contact area and crevice gap thickness. For your information the test temperature of the G48’s were 40C.
This paper will provide a brief overview of the standard and highlight several important points that can be sources of error or misunderstanding.
The testing medium was acidified FeCl solution. No matter what, the stake wont go down Prof Crisi Colorado — Section The valuable technical information you did provide: This is a simple immersion test where the test sample is placed in a temperature-controlled solution of FeCl 3.
If you need clarification as to what I am writing, all you have to do is ask, and I would be more than happy to follow up. And it just goes on, and on, and on, and on Client is not accepting the results and require to perform the testing to G48 Method A for 72 hours. Method D — Critical crevice temperature test for nickel-base and chromium-bearing alloys.
Pretty quick Reply I thought!
The crevice former contact area of Method B is a Other units are given in parentheses for information only. G48 A method is designed to determine the relative pitting resistance of stainless steels and nickel-base, chromium bearing alloys. 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 v48 you exhibiting such weird behavior Mfthod, I’ve looked on the dictionary and didn’t find the word “cagefighter”.
Go to this Youtube link and see some Anderson Sylva knockouts! Your suggestion to conclude the topic hereby is – from my humble standpoint – more than agreeable. Then after cutting you should pickle the sample. Overmatched filler etc and you have good micros and impacts then the test is probably just too severe. 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.
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.
Is the pipe pickled? 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.
Thank you for the details with respect to the use of pure CO2 for the flux cored wires discussed. For your information, on the use of CO2 when welding duplex, I attach some further information from Metrode.
Is this common y48 using this particular flux cored wire electrode? Proceedings of an international conference Subsea Controls and Data Acquisition ‘ The torque applied to the bolting assembly is 0.
The only reference from the OP regarding a Cr Super Duplex metal at all was when he was referring to the grade of metho wire used for the root pass which was deposited via GTAW