Differences in composition properties between S355J2W and S355J2WP steel plates

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.

S355J2WP meaning: S355J2WP is high phosphorus corrosion resistant structural steel. 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, and P is the chemical element phosphorus.

Introduction to S355J2W and S355J2WP

S355J2W belongs to fine grain steel and we can mass produce it. S355J2W is an improved atmospheric corrosion-resistant structural steel. S355J2W is widely used in high-speed rail bogies, welding, bolting and riveting components. S355J2W enhances the atmospheric corrosion resistance applied at ambient temperature. Some specific alloying elements, such as: P, Cu, Cr, Ni, Mo, etc., form a protective oxide layer on the metal surface under various climatic conditions.

S235J0W, S235J2W, S355J0WP, S355J2WP, S355J0W, S355J2W, S355K2W are mainly divided into these categories. When the mark "+N or +AR" appears on the steel plate, when the product is under the condition of +N or +AR, the product is forcibly specified and delivered. The flag "+N or +AR" will be added to the steel name and steel number. Example: Structural steel with improved atmospheric corrosion resistance (W) at ambient specified minimum yield strength of 355MPa and zero impact energy minimum of 27J Joules (J0) and standard rolled delivery conditions (S): Steel plate EN10025-5-S355J0W+N; or steel plate EN10025-5-1.8959+N (or +AR).