Recently, the group's hot rolling mill S500MC European standard high-strength galvanized structural steel was successfully trial-produced with the full cooperation and unremitting efforts of the technical team and production units, the product performance, surface dimensions, and appearance quality tests all passed. The successful development of S500MC, a new product of European standard high-strength galvanized structural steel, will not only help the group open up new markets, but also help formulate and improve the production outline of European standard products, enrich the cold and hot-rolled galvanizing raw materials and product catalogs, and provide the group has comprehensively implemented the product strategy of "high-grade steel products and high added value".
S500MC high-strength galvanized structural steel is based on European advanced quality control standards and adopts "low alloy" component ratio technology to achieve the ultimate goal of high strength and low cost. The total experimental production of this time is more than 1,190 tons, the composition control of the second steelmaking plant adopts low phosphorus and low sulfur composition control, which effectively prevents the product from cracking due to its excessive strength. The process control of the hot rolling plant adopts high dimensional accuracy, high Rolling is carried out by controlling the plate shape accuracy, and finally, a hot-rolled coil product with qualified mechanical properties, surface quality, dimensional accuracy, and appearance accuracy is obtained.
The S500MC high-strength galvanized structural steel produced in this experiment has an average yield strength of 596Mpa, an average tensile strength of 670Mpa, and an average elongation of 21%, which fully meets the requirements for the mechanical properties of raw materials in the European standard (yield strength > 500Mpa, tensile strength Strength 550~700Mpa, elongation ≥14%), with sufficient performance margin to meet the strength of the material after subsequent rolling and galvanizing. The products have passed the EU "CE" certification, and both raw materials and cold-rolled finished products can be exported to the European market, which is a solid step for the group to advance into the world's advanced steel companies.
The successful development of new products embodies "Jingang Wisdom", embodies "Jingang Speed", demonstrates "Jingang Quality" and establishes "Jingang Brand". It is the military medal of every Jingang person and will surely Encourage everyone to keep up their efforts, unite as one, and continue to move towards a new steel journey!