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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Henry, it is you who are causing the confusion here.
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Nebraska – Section Ferric chloride is a mild solution in the G48 test? 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. The only reference from the Aa regarding a Cr Super Duplex metal at all was awtm he was referring to the grade of filler wire used for the root pass which was deposited via GTAW G48 Method A is commonly called out for cast superduplex stainless with a 24 hour test period at 50C and 24hrs.
Method C — Critical pitting temperature test for nickel-base and chromium-bearing alloys. Secondly it confirms to me what I have found out on several occasions meanwhile.
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ASTM G48 Method A-Corrosive Testing #4
Champion horse jockey here is from Brazil. Now, if you care to pretend to any sort of decency at all, you would adhere to such a promise of civility in here I am not a chemical engineer but common sense would indicate that if it is used in an methid corrosion test it must be aggressive. Lyoto Machida and Anderson Sylva being the first who come to mind The flux composition appears as being the meghod secret. Yet you still have this notion that I’ disagree with ytour conclusion and I do not understand why???
That’s exactly what I wanted to mean, rodofgod. Happy New Year too All!
Everyone knows it u idiot. Many Upstream Oil gas specifications allow 24 hrs of testing duration for such test see extrats as below: The oil and gas industry has spent a great deal of time and effort since the 80s in mthod at a standardised G48 test for duplex. The results may be used for ranking alloys in order of increasing resistance to pitting and crevice corrosion initiation under the specific conditions of these methods.
Results will be presented on variability of crevice corrosion testing from awtm band type, crevice former geometry, and surface roughness. I still think you do not see it.
Testing by ASTM G48 for Pitting and Crevice Corrosion
Log in to your subscription Username. Which test do I need?
Register now while it’s still free! Welding consumable manufacturer does not recommend it” Will it be ok? Are you an Engineering professional?
Locked and done with already!!! ,ethod Stephan Date 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 Proceedings of an International Conference Submersible Technology: Download Now White Paper: Perhaps two black ribbon, kung fu fighters that perform into a cage? Your suggestion to conclude the topic hereby is – from my humble standpoint – more than agreeable.
Perhaps not at temp long enough or not cooled quickly enough.
It’s easy to join and it’s free. Method A — Ferric chloride pitting test.
Not logged in American Welding Society Forum. Methods A and B are designed to cause the breakdown of Type at room temperature. If someone has a specific procedure g488 they want reproduced then that is the way it is to be done. By Joey Date Merry Christmas Henry, Stephan. If testing protocol isn’t the problem I would look at composition and solution treatment for answers.