It is difficult to determine which steel grade offers superior strength and durability without specific data on their mechanical and chemical compositions. The DX51 and DX52 steel grades may have different properties that make them suitable for different applications. Further analysis of their mechanical composition, yield value, tensile value, chemical composition, and production limits would be required to determine their relative strength and durability.
As for their usage areas, DX51 and DX52 steel grades are commonly used in various industries where strong and durable steel is required. Some potential industries that may use these steel grades include automotive manufacturing, construction, roofing, HVAC systems, and general manufacturing.
To accurately compare the strength and durability of DX51 and DX52 steel grades, it is necessary to consult the specific technical specifications provided by the manufacturers or consult with industry professionals.