Development of 420 MPa High-strength Steel for Photovoltaic Supports
In order to meet the requirements asked by photovoltaic manufacturing industry for materials with high strength,high corrosion resistance and good formability,Ma'anshan Iron and Steel Co.,Ltd.successfully developed the S420GD+Z steel products with 420 MPa high-strength for photovoltaic supports depending on the composition design by Nb and Ti microalloying,together with reasonable processes such as hot rolling,acid rolling and hot galvanizing processes based on the existing production equipment and process characteristics.The practice results showed that the steel products were characterized by stable quality in production,good surface quality,and their mechanical properties and formability met the requirements in the technical standard formulated by users.
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