ASTM G48 – Download as PDF File .pdf), Text File .txt) or read online. Fig. 2 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 . The ASTM GA test (ferric chloride test) is widely used for pre-qualification of corrosion resistant alloys, welds and weld overlays for oil and gas industry.

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Download Now Over the past three decades, 3D printing has astm g48 a reputation as an essential manufacturing process for prototype parts. Don’t play mix and match with test conditions and procedures. Method E astm g48 Critical pitting temperature test for stainless steels. Over the past three decades, 3D printing has developed a reputation as an essential manufacturing process for prototype parts. However, the G48 test is meant for ranking or qualification, and not as designed for determining a corrosion rate over time.

The testing medium was acidified FeCl solution. Sstm A and B are astm g48 to cause the breakdown of Type at room temperature. This test method g84 designed solely for detection of the precipitation aastm detrimental intermetallic phases in duplex stainless steels. This standard contains six methods, A through F.

Not sure what you need? Thank you for helping keep Eng-Tips Forums free from inappropriate posts. Astm g48 Version s – view previous astm g48 of standard. Method F — Critical crevice temperature test for stainless steels. If you’re forced to pursue the astm g48 case scenario, then the other option is to use super duplex welding consumables for the weld coupon.


A h air passivation after grinding or pickling is sufficient to minimize these differences 8. Hi Syed, Passing G48A test is always asgm challenge to welding engineers. Promoting, selling, recruiting, coursework and thesis posting is forbidden.

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Posting Guidelines Promoting, selling, recruiting, astm g48 and thesis posting is forbidden. Consistent improvement in parts and systems are a standard part of the job. Methods C and D are for Ni-based, Cr-bearing alloys and define the test time at 72 hours. Then after cutting you should pickle the sample.

There are 6 Methods: A g4 suggestion earlier is to test the asrm metal this will demonstrate if you have any chance of passing. Reasons such astm g48 off-topic, duplicates, astm g48, illegal, vulgar, or students posting their homework.

The acceptance criteria, no pitting or crevice corrosion either at weld metal or Astm g48 is permitted, is mentioned only in client specification. Unfortunately, if the client wants a 72 hour astm g48, that is their prerogative.

Astk us Contact us Help Terms of use. The three crevice tests, Methods B, D and F, vary in crevice-former contact area and crevice gap astm g48.

Close this window and log in. Join your peers on the Internet’s largest technical engineering professional community. First of all, if you were using scidified ferric chloride it was method C.

If astm g48 consistently fails at the above specified testing regime, assuming that metallurgical factors g488 not contributors then the ways to get around it on GA test would be: If the results for BM and consumables are satisfactory then only pursue 72 hrs test for weld coupons. ASTM G 48 is a relatively severe test, but lack of definition astm g48 the standard can lead to variation of data.

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The FeCl 3 solution provides an aggressive environment to astm g48 localized corrosion due to the presence of chloride ions, oxidizing conditions, and low pH. They astm g48 similar test solutions but they are done for v48 different reasons. Other units are given in parentheses for information only.

Corrosion Testing to ASTM G48 using Method A – Corrosion engineering – Eng-Tips

However all tests have to be documented, results to be assessed astm g48 client and fabricators, with the Maximum Engineering Integrity of the components being the prime criteria. 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 astm g48 hours although variations may also be used.

Please share this page: It’s easy to join and it’s free. Publishers Content Coverage Privacy. Resources Digital transformation may be the most frequently misunderstood astm g48 misused term in business discourse today.

Some of the OnePetro partner societies have developed subject- specific wikis that may help. This astm g48 a simple immersion test where the test sample is placed in a temperature-controlled solution of FeCl 3.