What is the material of S355N?

What is the material of S355N?

S355N Steel Plate Introduction:

S355N is a European standard normalized or normalized rolled weldable fine-grained structural steel steel, S355N steel plate grade decomposition, S represents the grade of structural steel, 355 indicates that the yield strength of the steel plate is not less than 355MPA, n indicates that the delivery status of the steel plate is normalized or normalized rolling (normalized rolling by default), and the delivery quality and quality grade of the steel plate are not less than -20 degrees of minimum impact temperature

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The impact temperature is not indicated by English letters or symbols, if the impact temperature is not less than -50 degrees of the minimum impact temperature, it is represented by the capital letter L, S355N steel plate does not correspond to the national standard grade, S355N steel plate is close to the national standard Q355ND steel plate, and Q355ND is the same level of steel plate, but the chemical composition is still somewhat different.

S355N steel plate implementation standard:

The EN10025-3-2004 standard not only includes the name of the steel plate grade, but also stipulates the reference standard for the dimensional tolerance of the steel plate, the terms and definitions of the steel plate, the inspection standard, the production process, and the experimental method and classification of the steel plate, as well as the chemical composition and mechanical properties of the steel plate.

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S355N钢板的Z向性能：

The Z-direction performance of S355N steel plate is the thickness direction performance of the steel plate, the Z-direction performance plate is also known as the layered tear-resistant steel, the Z-direction performance of the steel plate is defined as three levels according to the elongation after the steel plate thickness break, Z15, Z25, Z35, three samples need to be taken for the Z-direction performance test of the steel plate, the average elongation of the steel plate after breaking is not less than 15%, and the average elongation of the single sample after breaking is not less than 10%, then the steel plate meets the Z-direction performance Z15 level. At the same time, the Z-direction performance also specifies the content of the harmful element sulfur in the steel plate, and the Z-direction performance includes three-stage flaw detection.

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S355N steel plate use:

S355N normalized rolled steel plate is often used in all kinds of spreaders, mining hydraulic support and hangers, construction machinery equipment and parts, mining machinery and equipment parts, ship repair, ship parts cutting, port machinery, S355N also has a certain wear resistance, can be used as non-special parts of the wear-resistant parts.