European HE Beam - HE160(B) 3

Designation according to EN 10027.
example : S275J4 (not JR04)
S = normal steel for structural use (not for pressure vessel)
275 = min yield strength (N/mm2)
J04 : min 27 joules at -40 °Centigrades (resilience - Charpy test)

english version

RobyengIT,

Thank you !

Extremely helpful.

pflow,

Note JR04 could mean JR steel rather than J4 as robyengIT has stated.
I would assume JR as this would be a conservative assumption (lower fracture toughness), which could be important depending on the temperatures your structure may experience over its design life.

s275 is unsusual
take s355

patswfc,

Thank you - good advice.

The site MIN design temperature is -15C. We talked to the steel manufacturer and we will order impact testing: -20C / 27 joule.

One other related question for you if you could offer your expertise.

I just wanted to understand more about the usual protocol in using common structural steel (e.g. SA-26, A992) for colder ambient temperatures.

For the ASME B&PV code, you can use, for example, SA-36 (for a pressure vessel) down to -20F w/o impact testing. Then there are further reductions in minimum temperature allowed based on the ratio of actual to allowable stress.

Is there a similar approach for structural steel? Or is the practice to impact test for anything below -20? Other approach?

I know this is a general question but any insight and/or references would be appreciated.

Hi
If the data is important I would check them once more. The first data you provided semms incorrect. Is it your decition what steel should be used or is it something you get from a steel supplier?

In my experience HEB sections are mostly in 355 steel. But it can vary between suppliers and the origin does not have to be Europe. But I found HEB S355J2 without problem, S275J4 was not as available.

Thomas

pflow said:

Is there a similar approach for structural steel? Or is the practice to impact test for anything below -20? Other approach?

Click to expand...

Your Code of Construction will usually outline such approaches, if that CoC has provision for such reductions. In ASME BPV, e.g. Sec VIII Div 1, there's method for this. Somehting similar is I believe in EN 13445. However, Im not a structural guy so I dont now about this codes.

Choice of impact value is determined by the eurocodes for structural applications.
However for skids, I wouldn't know if design guides exist...

In Eurocode EN 1993-1-10 there is information in chapter 2 regarding temperature and ductility. I don't think there should be any issues in this case because it usually only becomes a concern for lower tempertatures and thicker materials.

Is your project in Europe or is it just European sections? If Eurocode applies for a skid or not may be a national choice.

Thomas