Chemical composition and application of S355J2W weathering steel plate

S355J2W meaning: S is structural steel, 355 is the yield strength of 355MPa, J2 requires -20℃ impact, the letter W indicates that the steel has the ability to resist atmospheric corrosion.

Chemical composition of S355J2W weathering steel plate:
C≤0.16; Si≤0.5; Mn: 0.5-1.5; P≤0.025; S≤0.025; Ni≤0.65; Cr: 0.4-0.8; Mo≤0.3; Cu: 0.25-0.55; Nb: 0.015-0.06; V: 0.02-0.12; Als≥0.015; Zr≤0.15; CeqMax≤0.52

S355J2W steel plate application description:
S355J2W weathering steel plate enhances the ability to resist atmospheric corrosion when applied at ambient temperature. In order to achieve anti-corrosion properties, some specific alloying elements are added, such as: P, Cu, Cr, Ni, Mo, etc., which enables it to form a protective oxide layer on the metal surface under various climatic conditions.