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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Not logged in American Welding Society Forum. Giovanni, thank you for your response! A good ashm earlier is to test the base metal this will demonstrate if you have any chance of passing.

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Nor did I elude your question regarding the test temperature being too high for that specific grade of duplex either, and I answered your question with an emphatic no more than once!!!

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. Proceedings of an International Conference Submersible Technology: G48 is looking to determine the resistance to the initiation of chloride pitting.

The testing temperature will be selected based on the material that is under test. So, you must be proud that you’re Brazillian. This thread has proved you are an out and methd charlatan when it comes to welding stainless. I mean, as when I hear pure CO2 – for this particular instance – it might eventually cause some issues with carbide formation or precipitation etc? They use similar test solutions but they are done for very different reasons.


Results will be presented on variability of crevice corrosion testing from rubber band type, crevice former geometry, and surface roughness.

Join your peers on the Internet’s largest technical engineering professional community. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Perhaps not at temp long enough or not cooled quickly enough.


Everyone knows it u idiot. The product is wrought duplex but testing to G48 using Method A is client specification requirement for methid procedure qualification at 22C for suggested 72 hours. Advanced search Show search help. We hired an independant 3rd party asym 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.

Don’t play mix and match with test conditions and procedures. Thank you for the details with respect to the use of pure CO2 for the flux cored wires discussed. Crisi’s original asym to metrode with minor modifications to grammar etc! Posting Guidelines Promoting, selling, recruiting, coursework and thesis posting is forbidden. 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. Are you an Engineering professional?


As a welder, I take that as a resounding compliment!!! This test method is designed solely for detection of the precipitation of detrimental intermetallic phases in duplex stainless steels. Thanks Rodofgod for the response. Had you encountered a specific problem or were you just looking for general information.

You have been wrong all along on this and everyone with any technical expertise will know it. A h air passivation after grinding or pickling is sufficient to minimize these differences 8.

Respectfully, Henry Bill, It’s really unfortunate that your attitude, tone of message, total lack professionalism continues to describe you as accurate as ever!!! She is neither third world nor underdeveloped.

By CWI Date Well my dad can beat up your dad, so there! Ferric chloride is a mild solution in the G48 test? And it just goes on, and on, and on, and on Client is not accepting the results and require to perform the testing to G48 Method A for 72 hours. Firstly that metgod quite new to me and thus, I’ve been blessed again today by being allowed, to have learned something new.

Thank you for helping keep Eng-Tips Forums free from inappropriate posts. Which test do I need? Should the clients’ insistence is for 72 hrs duration then: