s355j0h vs s355j2hS355J2H S355J0H are both under the European standard en10025-2. S355 steel can be supplied according to Jr, J0, J2 and K2 (mainly with different impact energy requirements), of which S355J2 requires -20 ° impact value.
S refers to structural steel
355 is the minimum yield strength
J2 is impact temperature -20 ° impact value ≥27j
H means hollow section steel