In the field of materials science, a significant breakthrough has been achieved with the development of coating-free super resistance steel products, offering tensile strengths ranging from 420 to 800 MPa. This series of weather resistance steel successfully integrates high strength with exceptional corrosion resistance, while also boasting excellent formability and environmental benefits. Its superior adaptability allows it to perform reliably in a wide spectrum of harsh atmospheric conditions, including inland climates, polluted industrial atmospheres, and highly corrosive marine environments.
The remarkable performance of this weather resistance steel family is exemplified by the LGNHP800 grade. When applied in the manufacturing of photovoltaic (PV) support structures, this advanced weather resistance steel can achieve a remarkable weight reduction of approximately 25% compared to traditional structural materials. This lightweight advantage directly translates to lower transportation and installation costs, while simultaneously enhancing the structural efficiency of the support system.
A defining feature of this weather resistance steel is its inherent ability to be used in the bare, exposed condition without protective coatings in C3 corrosivity categories as defined by the ISO standard. Long-term performance projections indicate an average corrosion rate of less than 0.1 mm per year over a 30-year service life. This “maintenance-free” characteristic eliminates the need for and cost associated with initial painting and subsequent repainting cycles, offering substantial life-cycle cost savings and operational simplicity.
In conclusion, this new generation of super weather resistance steel, which combines high strength, superior corrosion resistance, ease of fabrication, lightweight properties, and environmental sustainability, represents a significant advancement in structural materials. It provides an innovative and robust material solution, paving the way for greener and more sustainable development in sectors such as renewable energy (particularly PV mounting), specialized containers, railway vehicles, and other outdoor structures.
