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Structural steel in cold climates

Structural steel in cold climates

Structural steel in cold climates

(OP)
What grade of steel should be used in climates with sub-zero temperatures? There is a European grade of steel, 355NL, that is certified to meet an average charpy impact test requirement of 27 Joules at -50°C in the longitudinal orientation. Does this imply that it is suitable to be used in situations where the temperature drops to -50°C (I know this an extreme temperature but it's the concept I'm checking and not this particular temperature). I generally work in Africa but have recently had an enquiry about a steel structure in a cold climate and need advice on how to proceed.

RE: Structural steel in cold climates

There have been several threads on this topic - try searching for them.

For instance see my response in thread507-168729

RE: Structural steel in cold climates

My expertise is mostly in the tank and vessel world where material toughness at lower temperatures is critical.  You might want to look at API Standard 620, Appendix R for the rules for low temperature storage tanks down to -60F.  There are specific requirements for the structural members used for roof supports that may be usedful to you.

Joe Tank

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