Recently, the ultra high strength and high plasticity hot-dip galvanized duplex steel were successfully manufactured in SHBG Steel Technology Group, marking that SHBG has become an enterprise capable of manufacturing the highest-strength hot-dip galvanized CH steel products in the world.
As the new star product of the complex-phase steel family, high-plasticity complex-phase steel (CH steel) maintains the excellent reaming and flanging performance of traditional complex-phase steel (CP steel), and further improves the elongation of the product.
Highest strength and high plasticity hot-dip galvanized duplex steel
Typical SEM photo[Lower bainite + submicron carbide precipitation]
The series of SHBG products are mainly based on the bainite matrix. By adjusting the dispersion and precipitation of sub-micron carbides, a fine and uniform microstructure is obtained, so that the product has a yield strength of 900~1100MPa and a tensile strength of not less than 1180MPa. , The elongation (longitudinal A50) is not less than 8%, and it also has a hole expansion rate of about 40-50%. It can be widely used in automotive structural parts that have higher requirements for hole expansion and flanging and higher requirements for plasticity. And special parts for car seats, such as seat slides, door sills, door anti-collision beams, floor beams, etc. The ultra-high-strength and high-plasticity composite steel has initially completed the seat slide rail test, and its comprehensive forming performance has been verified by use and confirmed by OEMs.