S355J2 N-Z35 low alloy steel plate is an European standard structural steel, mainly used in large machinery manufacturing, equipment base, large welded steel structure, construction, bridge and other fields.
S355J2 N-Z35 low alloy steel plate chemical composition:
C: 0.15-0.18%, Si: 0.30-0.50%, Mn: 1.30-1.50%, P ≤ 0.015%, s ≤ 0.004%, Cr ≤ 0.30%, Ni ≤ 0.50%, Mo ≤ 0.10%, Cu ≤ 0.30%, V ≤ 0.15%, Nb ≤ 0.05%, Ti ≤ 0.05%. The surplus is Fe and inevitable impurities.
Mechanical properties of S355J2 N-Z35 low alloy steel plate:
The yield strength Rp0.2 ≥ 355MPa (thickness under 16mm), tensile strength RM: 450 - 680mpa, elongation a ≥ 14%, impact energy Kv2 ≥ 47j, - 20 degree, tensile section shrinkage Z ≥ 35% in the thickness direction of the steel plate. The S355J2 N-Z35 low alloy steel plate has excellent internal quality, high density and stable performance.
With the continuous development of economy and the large-scale demand of equipment, the demand of ultra thick structural steel plate is increasing gradually. While the technology of S355J2 N-Z35 low alloy steel plate is more and more strict, and the added value of S355J2 N-Z35 low alloy steel plate is relatively high, especially the production of ultra thick S355J2 N-Z35 low alloy steel plate is relatively difficult. In order to realize the production of super thick S355J2 N-Z35 low alloy steel plate, the ingot is used to produce and roll the steel plate with uniform grain distribution, to eliminate the defects such as porosity and shrinkage porosity in the steel plate, to meet the good matching of strength and impact toughness, and the thickness direction performance is better, which is suitable for mass production.
