s355j2h steel equivalent

The S in European standards for S tructural steel, so you wont find any equivalent for that in II-D. The equivalent 'pressure' application type of steel to S355, is (as you may have guessed) P355. J2H standards for the delivery condition; one is for impact at - -20 °C, H for tubular products. As I dont regularly deal with steel plates for pressure purposes, Google told me that S355 equals ASTM A572 gr 50 . To verify this you'd have to check both EN and ASTM specifications. Since you havent listed the relevant EN specification (which I assume is EN 10210 or EN 10219), you need to provide more info. Also, Im not sure if the additional features J2H are covered in the ASTM spec you are looking for. For example, A572 is for plates, whereas you're looking for a tubular porduct. You can rool a tube from plate, but you may then be better of with another ASTM standard. It all depends on your application, which you havent listed, so in order to provide a more detailed answer, more details are required. PS: please bear in mind that specifying any steel grade always requires to also include the standard that details the product form , e.g. EN 10025-3 S355NL or ASTM A182 F316 .Thank you very much for your response and sorry for the delay in my reply. My client asks me to design an autoclave at 150 bars (internal pressure) and he is obsessed with this material (S355J2H). The autoclave will work with fresh water between 4ºC and 40ºC (winter and summer local temperatures). He wants this steel because he doesn't want too much welding on the device. So, I ask if, in general, ASME allows to use other steels not listed in ASME section II-D and with what safety factors. Thanks!No. Not allowed by ASME, unless you make a code case. But I wouldn't want to go that way for this application.So.I can't use ASME codes ThanksWhere will this pressure vessel be located/used?DekDee, I assume you mean with repsect to welding under ASME IX? A material not listed in II-D (or approved via a Code Case) cant be user under ASME VIII work. Also not via qualification of a PQR (how are you going to determine allowable stresses?). Period.I realised just after I posted - design requirements and applicable code are more important than welding qualifications. Will remove post. Cheers, ShaneOk. I understand it. The application will be an "autoclave", with internal pressure. But is strange that ASME does not include a security factors for steels of other recognized standards (for example from E.U) Anyway I have done simulations with finite element programs (ANSYS) and the device works perfectly. So I would like to know if is possible to certify this device even though the material is not from ASME standards. Again, thank you very much!I ask again, because it matters and helps us answering your last post; where will this vessel be located? From there on we can help determining which jurisdictional requirements there are, and from there have a starting point to see what code the vessel for example may need to be designed against.This device will be inside of an industrial building, in Barcelona (European Union). It will have three legs to support the weight. The approximate dimensions will be 1 m = diameter, by 1 m = length. Thanks