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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For some reason or reasons they consider important, Nordic has introduced some changes into the original ASTM specification and they state clearly that their materials are tested according to that revised spec.

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Finally, when I said: 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. C tests at that temperature is clear that the microstructure have been affected.

You just don’t seem to get it, yet everyone else in here does, so I will not attempt any further reconciliation with a person that shows no interest in acting as an adult Henry, remember you wrote this garbled nonsense right at the beginning of the first thread before I made any comment. The three crevice tests, Methods B, D and F, vary in crevice-former contact area and crevice gap thickness.

The test solution is actually quite aggressive, certainly more so than the materials would be subjected to in normal service. Why thank you Billy!!!

We follow a standard practice we have developed to minimize these variations and provide consistent data. North Florida – Section Not sure what you need? Grinding or pickling on stainless steel surfaces may destroy the passive layer. For your information the test temperature of the G48’s were 40C. Crisi’s original letter to metrode with minor modifications t48 grammar etc! There are several factors that can influence the selection of methods; we can help you with this part of the process as well.


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I think Henry aetm me an apology. Unwelded base material or solution annealed welds will pass the test at higher temperatures. Close this window and log in. Is this common when using this particular flux cored wire electrode?

Yes, we did not add HCL to the test solution.

The torque applied to the bolting assembly is 0. 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!

No matter what, the stake wont go down Prof Crisi Dear experts, The subjected testing was performed on Duplex steel for welding procedure qualification at testing temperature of 22C for suggested time period of 72 hours as per ASTM G48 using Method A. The torque applied to the bolting assembly is 0.

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. A good suggestion earlier is to test the base metal this will demonstrate if you have any chance of passing. The sides only may be ground to a grit finish and the edges may be rounded.


I am rather hesitant in posting this, However, I will keep to my word for those who are intrested.

Overmatched filler etc and you have good micros and impacts then the test is probably just too severe. You decided to continue your utter lack of respect towards anyone, and I mean everyone in here by the way you chose to continue to express yourself in here billy!!!

Where you cut a sample and grind the surfaces, no pickle or passivation allowed, and test in ferric chloride? Sheriff’s Encyclopedic Dictionary of Applied Geophysics, fourth edition. I don’t know any end users who test for 72 hours.

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Locked and done with already!!! In many ways, G is ideal for use instead of methods C-F as it is a more rapid method that can be performed within days instead of weeks. This should indicate if you have any intermetallic phases present.

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 Not logged in American Welding Society Forum. Download Now Defense manufacturing is all about project manufacturing and project accounting. 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!

Defense manufacturing is all about project manufacturing and project accounting. Or at least do micros.