There is no specific answer to which industries use DD11 or DX51 steel grades as it will depend on the specific requirements of each industry and application. However, both DD11 and DX51 are commonly used in various industries such as automotive, construction, appliance manufacturing, and general engineering.
DD11 is a low carbon steel grade that is primarily used for forming and deep drawing applications. It is often used in the automotive industry for manufacturing lightweight components, as well as in construction for fabricating structural parts.
DX51, on the other hand, is a galvanized steel grade that has a zinc coating applied to protect the underlying steel from corrosion. It is commonly used in the construction industry for roofing, siding, and structural applications where corrosion resistance is required.
Overall, the choice between DD11 and DX51 will depend on the specific needs of the application, including factors such as desired mechanical properties, corrosion resistance, and formability.