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Leading green manufacturing, empowering the new track of global industrial upgrading
The global metal materials market is innovating and upgrading: Technological breakthroughs in Galvalume, Galvanized Steel, aluminum and Stainless Steel are leading industrial transformation
Against the backdrop of surging demand for green buildings and high-end manufacturing, the global metal materials industry is accelerating technological iteration. The new generation of corrosion-resistant materials represented by Galvalume Steel, with its unique 55% aluminum -43% zinc -1.6% silicon alloy coating, comprehensively surpasses traditional galvanized steel in terms of corrosion resistance, service life and environmental protection performance. Data shows that the service life of Galvalume steel plates is 2 to 6 times longer than that of galvanized steel at the same thickness, and they can still maintain excellent performance in harsh environments such as high temperature and humid concrete. They have been widely used in photovoltaic brackets, industrial plants and home appliance shells.
Galvanized Steel, the industry benchmark, whose hot-dip galvanizing process forms a dense zinc-iron alloy layer through alloying reaction between the zinc layer and the iron substrate, still dominates markets such as pipes and building structural components. However, with the tightening of environmental protection regulations, problems such as uneven zinc coating thickness and high energy consumption have become increasingly prominent, prompting enterprises to accelerate their transformation to Galvalume and Aluzinc Steel.
The aluminium materials sector shows a diversified development trend. 3003 aluminum alloy plates achieve a balance of high plasticity, corrosion resistance and weldability through manganese alloy strengthening technology, making them an ideal choice for fuel tanks, condensers and ship components. And 1070 industrial pure aluminum, with its excellent electrical and thermal conductivity, continues to dominate the niche markets such as electronic components and cable sheaths. In addition, the penetration rate of aluminum tubes in air conditioning and ventilation systems as well as Marine engineering has been continuously increasing. Their lightweight characteristics and resistance to seawater corrosion have become core advantages.
Stainless steel materials are undergoing organizational structure innovation. Austenitic stainless steels (such as 304 and 316L) have made breakthroughs in pitting corrosion resistance and stress corrosion resistance through nickel content optimization, and are widely used in food machinery, pressure vessels and high-end building curtain walls. Duplex stainless steel, relying on the synergistic effect of the austenitic-ferrite duplex structure, demonstrates the dual advantages of high strength and corrosion resistance in the fields of oil and gas transportation and seawater desalination.
It is worth noting that Prepainted Steel achieves a dual upgrade in anti-corrosion performance and decorative effect by combining organic coatings such as polyester and silicon-modified polyester with Galvalume substrates through a two-coat and two-bake or even three-coat and three-bake process. Its rich color, anti-powdering property and convenient construction make it the preferred material for the exterior facades of large venues and commercial complexes.
Industry experts point out that the technological competition in metal materials has shifted from merely enhancing performance to optimizing costs throughout the entire life cycle. The global output of Galvalume Steel has exceeded 7 million tons. The deep processing technology of aluminium materials has broken through into the field of 0.2mm ultra-thin, and the trend of duplex stainless steel is accelerating. All these confirm the urgent market demand for high-performance, lightweight and environmentally friendly materials. In the future, with the localization of intelligent coating lines, continuous annealing furnaces and other equipment, China's metal materials industry is expected to occupy a higher position in the global value chain.
