S355J2 is a low alloy high-strength steel. The executive standard of S355J2 is the European standard: EN10025-2, which can meet the requirements of Z-15, Z-25, Z-35 and Level I, II and III UT test.
High-strength steel plate S355J2 extension grade:
The extension grades of S355J2 are S355J2, S355J2-Z35, S355J2+N-Z35. S355J2-Z35 is the requirement of steel plate thickness direction performance added to S355J2, that is, Z-direction performance. S355J2+N-Z35 is a heat treatment process that adds Z-direction properties and normalizing rolling (or normalizing).
Meaning of S355J2-Z35: J2 requires negative 20 degree impact, and Z35 is the Z-direction property of steel plate.
Meaning of S355J2+N-Z35: J2 requires a negative 20 degree impact, and N means that it is equivalent to normalizing rolling rather than normalizing. It is only a way to name the steel grade in the standard, and Z35 is the Z-direction property of steel plate.
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