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. Test Specification: AS & ASTM Ec . FERRIC CHLORIDE CORROSION TEST – TEST METHOD A – ASTM G

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Eventually in the ‘Metallurgy’ section?

I say like Socrates one of the greatest philosophers Human Kind has ever hadsaid: 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. Are you sure that the temp is correct for the alloy? Welding consumable manufacturer does not recommend it” Will it be ok? If you’re forced to pursue the wrost case scenario, then the other option is to use super duplex welding consumables for the weld coupon.

By Lawrence Date There are 6 Methods: Powered by mwForum 2. Thank you for the details with respect to the use of pure CO2 for the flux cored wires discussed.

ASTM G48 Method A-Corrosive Testing #4

The valuable technical information you did provide: This paper will provide a brief overview of the standard and highlight several important points that can be sources of error or misunderstanding. Unwelded base material or solution annealed welds will pass the test at higher temperatures.


I haven’t checked, but does Metrode recommend that also??? This standard contains six methods, A through F.

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The futures history books will reflect a much different book than the present’s history. I think Henry owes me an apology.

First of all, if you were using scidified ferric chloride it was method C.

Perhaps not at temp long enough or not cooled quickly enough. About us Contact us Help Terms of use. At long last we come to know or at least I come to know what Metrode have to say about their specification attached to one of nanjing’s posting on another asym on this same subject. Just out of curiosity. Unfortunately, if the client wants a 72 hour test, that is their prerogative.

Testing by ASTM G48 for Pitting and Crevice Corrosion

Ferric chloride is a mild solution in the G48 g48w I never disagreed with your conclusion, and in the original thread I acknowledged it also No matter what, the stake wont go down Prof Crisi So give it a rest Bill, and enjoy the Holidays because, you need to get some joy in your life and escape from your self-imposed state of misery!


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 zstm the purging gas as being too high, if that is where the pitting marks were found.

Stephan, I totally disagree with your viewpoint, noble? The Eng-Tips staff will check this out and take appropriate action. A reduction from 24 Deg C to 20 Deg C could be helpful.

Here is another link showing the suggestions and findings of Norsok: The torque applied to the bolting assembly is astn. We’ll be the World Champions for the 6th time. Many Upstream Oil gas specifications allow 24 hrs of testing duration for such test see extrats as below: Henry, I would have accepted your “olive branch” if you had been man enough to admit your failings on this subject and I would have respected you for that.

Log in to your subscription Username. I respectfully disagree with it being the end of the story, since your true nature is only beginning to be revealed in here Did you think it was above this? It is, like it is.