ASTM G48A PDF

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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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! 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? Contact our corrosion experts today! Secondly, have you done an A test?

Testing by ASTM G48 for Pitting and Crevice Corrosion

There are several factors that can influence the selection of methods; we can help you with this part of the process as well. Not sure what you need? The crevice former contact area of Method B is a Results will be presented on variability of crevice corrosion testing from rubber band type, crevice former geometry, and surface roughness.

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If you need clarification as to what I am writing, all you have to do is ask, and I would be more than happy to follow up. Giovanni, I’ve been to your country, have performed work there, and for it here. Proceedings of an international conference Diverless and Deepwater Techology: This thread has proved you are an out and out charlatan when it comes to welding stainless. Register now asm it’s still g48w

A and B are for qualification of alloys to pitting and crevice corrosion at specific temperatures, C and D are for determining astj critical pitting and crevice corrosion temperatures of chromium and nickel alloys, and E and F are for stainless alloys.

I only know that I know nothing. Method A — Ferric chloride pitting test. What exactly is it? Log in to your subscription Username. I also note your good friend the “highly sstm Doctor Crisi” has disappeared from this issue after his glaring faux pas.

Advanced search Show search help. Method F — Critical crevice temperature test for stainless steels.

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g4a Nevada – Section Method C — Critical pitting temperature test for nickel-base and chromium-bearing alloys. Thank you for the details with respect to the use of pure CO2 for the flux cored wires discussed. 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. Henry, so well said – truly noble!

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I cannot say whether this is common zstm gas composition and flow rate is in line welding downhand. I haven’t checked, but does Metrode recommend that also??? Method B — Ferric chloride crevice test.

Ed, The issue is not confused. 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.

Finally, when I said: Methods E and F are for stainless steels and have a test time of 24 hours. ASTM G 48 is a relatively severe test, but lack of definition in the standard can lead to variation of data.

The valuable technical information you did provide: This is a simple immersion test where the test sample is placed in a temperature-controlled solution of FeCl 3.

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