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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Testing by ASTM G48 for Pitting and Crevice Corrosion
The crevice former contact area of Method B is a For your information the test temperature of the G48’s were 40C. G48w paper will provide a brief overview of the standard and highlight several important points that can be sources of error or misunderstanding. Powered by mwForum 2. G48 Method A is commonly called out for cast superduplex stainless with a 24 hour test period at 50C and 24hrs. If someone has a specific procedure that they want reproduced then that is the way it is to be done.
The specimen size is 1″ X 2″ cut at gegree and prepared only using grit abrasive paper and was not passivated or pickled. Firstly that was quite new to me and thus, I’ve been blessed again today by being allowed, to have learned something new. That’s exactly what I wanted to mean, rodofgod.
If the results for BM and consumables are satisfactory then only pursue 72 hrs test for weld coupons. Which one do you need? Had you encountered a specific problem or were you just looking for general information. Methods C and D are for Ni-based, Cr-bearing alloys and define the test time at 72 hours. You just don’t seem to get it, yet everyone else in here does, so I will not asstm any further reconciliation with a person that shows no interest in acting as an adult Are you working with a cast duplex product?
Welding consumable manufacturer does not recommend it” Will it be ok? Secondly, have you done an A test? Go to this Youtube link and see some Anderson Sylva knockouts! Promoting, selling, recruiting, coursework and thesis posting is forbidden. Students Click Here Join Us! I respectfully disagree with it being the end of the story, since your true nature is only beginning to be revealed in here The testing medium was acidified FeCl solution. You have been wrong all adtm on this and everyone with any technical expertise will know it.
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. Method E — Critical pitting temperature test for stainless steels. Giovanni, thank you for gg48a response!
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. Many Upstream Oil gas specifications allow 24 hrs of testing duration for such test see extrats as below: Ed, The issue is not confused. Don’t play mix and match with test conditions and procedures.
I think this pretty well backs up everything I have said on this subject. 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!!!
By Nanjing Date 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.
When testing as-welded, cylindrical, or other non-flat samples, the standard crevice formers will not provide uniform contact. No matter what, the stake wont go down Prof Crisi Here is another link showing the suggestions and findings of Norsok: Why thank you Billy!!! Method F — Critical crevice temperature test for stainless steels. Digital Transformation may be defined in a number of different ways by analysts or enterprise software vendors.
ASTM G48 Method A-Corrosive Testing #4
Puget Sound Olympic – Section Thank you for the details with respect to the use of pure CO2 for the flux cored wires discussed. Your suggestion to conclude the topic hereby is – from my humble standpoint – more than agreeable.
Henry, it is you who are causing the confusion here.
Client is not accepting the results and require to perform the testing to G48 Method A for 72 hours. Lawrence, I’ve looked on the dictionary and didn’t find the word “cagefighter”. Are the specimens with or without PWHT?