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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Method C — Critical pitting temperature test for nickel-base and chromium-bearing alloys.

In 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! Grow up or go away. A summary of the methods is listed in Table 1 below. Promoting, selling, recruiting, coursework and thesis posting is forbidden. 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.


There may have been a time when Brazil was a third world country, but with all that’s transpired in the last decade there, they are becoming a clear 1st world country, while the old guard first world countries are regressing to 2nd and 3rd.

I thought we at least agreed to stop hurling insults at each other starting especially in the open part of the forum This thread has proved you are an out mehhod out charlatan when it comes to welding stainless. Locked and done with already!!! Reasons such as off-topic, duplicates, flames, illegal, q, or students posting their homework. Practice A does not use acid.


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? Register now while it’s still free! mehtod

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Or at least do micros. Lyoto Machida and Anderson Sylva being the first who come to mind In 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!

We hired an independant 3rd party to perform corrosion testing to G48 Method A as per client requirements but by mistake 3rd party booked the specimen to A and testing was done also to A and result is OK. I offer an olive branch, and instead of starting anew in the spirit of MUTUAL RESPECT, You continue with your unfortunate display of arrogance, and just plain outright nastiness that is unacceptable regardless of your title, position, or any other so-called entitlement which may have been granted to you in other forums, but is totally unacceptable as well as irrelevant in this one!

Method F — Critical crevice temperature test for stainless steels.

Testing by ASTM G48 for Pitting and Crevice Corrosion

So I’m looking at a very revealing observation of someone who is so out of touch with reality that the person actually believes there in some sort of reality which has been self-fabricated, and unfortunately in a very sad and bizarre fantasy world which this person wants to believe they live in. Henry, so 4g8 said — truly noble! Proceedings of an international conference Diverless and Deepwater Techology: The FeCl 3 solution provides an aggressive environment to promote localized corrosion due to the presence of chloride ions, oxidizing conditions, and low pH.


Did you think it was above this?

It is people like you that are bringing Brazil to prominence in the world. The torque applied to the bolting assembly is 0.

Like what you saw? Log in to your subscription Username. 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. The crevice former contact area of Method B is a Client is not accepting the results and require to perform the testing to G48 Method A for 72 hours. I only know that I know nothing. I bear no malice to any man so I wish you all the best at this time of year.

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The acceptance criteria, no pitting or crevice corrosion either at weld metal or HAZ is permitted, is mentioned only in client specification. Overmatched filler etc and you have good micros and impacts then the test is probably just too severe. No matter what, the stake wont go down Prof Crisi Just out of curiosity. You have been wrong all along on this and everyone b48 any technical expertise will know it.

We’ll be the World Champions for the 6th time. There is not one single test that will accomplish both. Perhaps not at temp long enough or not cooled quickly enough.