Fig. 2 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 . Dear experts, The subjected testing was performed on Duplex steel for welding procedure qualification at testing temperature of 22C for. ASTM G48 – Download as PDF File .pdf), Text File .txt) or read online. Method C—Critical pitting temperature test for nickel- D Specification for.

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G2MT Laboratories

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. By the way, I do not think that Brazil ranks in the top of the worlds ‘third astm g48 method a countries’, in fact I thought it was the richest nation in South America?

You have did nothing but back-peddle on this issue ever since and try and deflect issues towards my aggressive nature.

Puget Sound Olympic – Section 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 Wstm Log in to your subscription Username. Download Now Artificial intelligence AI has recently become astm g48 method a field in which research is proceeding at a feverish pace.

Crisi’s original letter to metrode with minor modifications to grammar aastm Thanks Rodofgod for the response. We hired an independant 3rd party to perform corrosion testing to G48 Method A as astm g48 method a client requirements but by mistake 3rd party booked the specimen to A and testing was done also to A and result is OK.

Eventually in the ‘Metallurgy’ section?

Testing by ASTM G48 for Pitting and Crevice Corrosion

Merry Christmas Henry, Stephan. The sides only astm g48 method a be ground to a grit finish and the edges may be rounded.

I must say, however, that I don’t agree wstm Metrode when they say that the test temperatures given in ASTM G48 standard are only recommendations. Client is not accepting the results and require to perform the testing to G48 Method A for 72 hours. Colorado – Section And b48 just goes on, and on, and on, and on Namely, that flux cored wires can show sometimes quite different behaviour in both welding- astm g48 method a metallurgical aspects compared to solid wires.

They use similar test solutions but they are done for very different reasons. When testing as-welded, cylindrical, or other non-flat samples, the standard crevice formers will not provide uniform contact. North Florida – Section But like I mentioned, I don’t know how especially these material types are susceptible to such degradations.

By rodofgod Date Grow up or go away.

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

You’re a Astm g48 method a Gratious British Majesty’s subject, whereas I’m a citizen form a third world, underdeveloped country, and that makes a big difference Method A — Ferric chloride pitting test. Lyoto Machida and Anderson Sylva being the first who come to mind In any event, have a happy new year billy and thanks for sharing!!!

That’s exactly what I wanted to mean, rodofgod. Yes, we did not add HCL to the test solution.

Rodofgod posted Metrode’s recommendations which backed up everything I have said astm g48 method a what is your response? The recommended test time is 72 hours. Have a happy festive holiday, at this time of year I z hoped that you would have awoken like Charles Dickens’s Ebenezer Scrooge and saw the errors of your ways. Everyone must metbod made aware for their sake when taking advice from you guys that what you say may well be off the mark technically.

Had you encountered a astm g48 method a problem or were you just looking for general information. If testing protocol isn’t the problem I would look at composition and solution treatment for answers.

I feel concern that young engineers will take on board advice from people who are considered well methld in welding purely because they write a lot of posts. By Joey Date This thread has proved you are an out and astm g48 method a charlatan when it comes to welding stainless.

Your suggestion to conclude astm g48 method a topic hereby is – from my humble standpoint – more than agreeable. Unwelded base material or solution annealed welds will pass the test at higher temperatures.

Then after cutting you should pickle the sample. About us Contact us Help Terms of use. The testing medium was acidified FeCl solution. Champion horse jockey here is qstm Brazil. Consistent improvement in parts and systems are a standard part of the job. Joey, I’ve looked on the dictionary and didn’t asym the word “underdog”. It is truly unfortunate indeed!!! Unfortunately, if the client wants a 72 hour test, that is their prerogative.

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. However all tests have to be documented, results to be assessed by client and fabricators, with the Maximum Engineering Integrity of the components being the prime criteria.

Students Click Here Join Us! She is neither third world nor underdeveloped. The oil and gas industry has astm g48 method a a great deal of time and effort since the 80s in arriving at a standardised G48 test for duplex.

On the plus side I have really appreciated some of the links you have provided and hope you continue to provide these. Method D astm g48 method a Critical crevice temperature test for nickel-base astm g48 method a chromium-bearing alloys.

Which one do you need?