S355 steel plate is a non-alloy European standard (EN 10025-2) structural steel. It is most commonly used after S235 and requires more strength. S355 steel plate has good weldability and workability.
S355 steel plate is named based on its minimum yield strength of 355 Mpa (N/mm2), but when the thickness exceeds 16 mm, the yield strength will decrease, for flat products and hollow sections.
S355 steel plate tensile strength, S355 ultimate tensile strength ranges also varies based on thickness.
Up to 3 mm - 510 Mpa to 680 Mpa.
3 mm < t≤100 mm - 470 Mpa to 630 Mpa.
100 mm < t≤150 mm - 450 Mpa to 600 Mpa.
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