Intergranular corrosion of heat exchange tubes
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Is intergranular corrosion testing required for the heat exchange tubes made of S30408? I have a quality certificate, but that field is left blank. From what I’ve seen in the standards, it seems that such testing is necessary – does that matter?
If the standards require it, then it should be done, and this should be clearly stated in the quality certificate.
Hehe, what are you trying to do with intergranular corrosion?； Generally, 304 steel has undergone intergranular corrosion tests using copper sulfate or oxalic acid. For applications under specific conditions, an intergranular corrosion test using *ao acid is required for S30403, and it is very difficult to pass such tests ； But all other intergranular corrosion tests should pass