The material analysis of S355J2+N-Z15 steel plate

1. S355J2+N-Z15 steel plate is a European standard low-alloy high-strength steel plate, in which S refers to structural steel, and 355 refers to the yield strength at room temperature not less than 355Mpa. J2 requires -20℃ impact. As for the +N at the back, it means normalizing rolling or normalizing. It is only a way of naming steel grades in the specification. Z15 is an expression of performance in the thickness direction.

2. Chemical composition of S355J2+N-Z15 steel plate:

Element	C	S	Mn	P	Si	Cu
Content	≤0.22	≤0.025	≤1.60	≤0.025	≤0.55	≤0.55

3. Mechanical properties of S355J2+N-Z15 steel plate:

Thickness	≤16mm	16-40mm	40-63mm	63-80mm	80-100mm	100-150mm
Yield strength	≥355Mpa	≥345Mpa	≥335Mpa	≥325Mpa	≥315Mpa	≥295Mpa
Tensile strength	450-680Mpa

4. S355J2+N-Z15 steel plate standard: EN10025. Similar grades: S235JR+N, S235J0+N, S235J2+N, S275JR+N, S275J0+N, S275J2+N, S275N, S275NL, S355JR+N, S355J0+N, S355J2+N, S355K2, S355N+N, S355NL.

5. Heat treatment of S355J2+N-Z15 steel plate: normalizing rolling or normalizing.

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