Is 316SS commercial requirement require UT test ?
Is 316SS commercial requirement require UT test ?
(OP)
Hi Guys,
Not sure if 316ss commercail requirement ask for the UT test ( mostly? ) .. i thought the answer is no, but would like to confirm
Thanks ahead
Kat
Not sure if 316ss commercail requirement ask for the UT test ( mostly? ) .. i thought the answer is no, but would like to confirm
Thanks ahead
Kat





RE: Is 316SS commercial requirement require UT test ?
316 ss is not tested UT because it is austenite's , 316 stainless steel is not magnetic
Denlow .
RE: Is 316SS commercial requirement require UT test ?
This would all be spec driven.
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Plymouth Tube
RE: Is 316SS commercial requirement require UT test ?
Denlow...what are you talking about?
RE: Is 316SS commercial requirement require UT test ?
Please note that "non-magnetic" isn't a restriction to perform UT as it is for MT since UT doesn't require the magnetic properties of a steel.
katrinali,
UT is widely used for austenitic stainless steels like SS 316 even though the austenitic structure makes it difficult to detect discontinuities due to its coarse grain as well as its anisotropic crystal structure that result in attenuation, splitting, dispersion and skewing of the beam. In order to overcome that problem low frequency large size probes and shorter ultrasonic wavelengths shall be used. Please have a look at this link:
UT on austenitic stainless steel (ASS)
regards
wegm
RE: Is 316SS commercial requirement require UT test ?
Regarding your original query, please let me add that the requirement for UT depends on the applicable code and customer requirements
regards,
wegm
RE: Is 316SS commercial requirement require UT test ?
Thanks a lot !!! this is really helpful : D
Problem solved ~~
Cheers
Kat
RE: Is 316SS commercial requirement require UT test ?
it is good that I know this now, because in the Netherlands , we use RT
Thank you.
Denlow
RE: Is 316SS commercial requirement require UT test ?
Its probably more correct to say that 316 is non magnetic only after annealing
316 in my hand now has an Eclipse magnet 25 Dia x27 long hanging upside down on it
I also have a 316 conflat flange,that does the same
RE: Is 316SS commercial requirement require UT test ?
what I've learned is that only the austenitic stainless steel group is not or very light magnetically.
Denlow