The main difference between pure titanium plate and composite titanium plate lies in their composition and application.

Pure titanium plate is composed of a single element (titanium dioxide), also known as a "glassy" metal, with high purity. This type of titanium plate has excellent heat resistance and corrosion resistance, as well as resistance to stress erosion and fracture. Therefore, it is widely used in high-temperature and high-pressure vessels in the petrochemical industry, as well as storage tanks in oil and drilling platforms in marine environments. It is used as an inner lining material for equipment or as an anti-corrosion coating.

Composite titanium plate is a special stainless steel plate composed of two or more elements. These elements may include aluminum as well as other metallic elements such as molybdenum, niobium, etc., and are therefore also known as composite steel, molybdenum based alloys, or niobium based alloys. Composite titanium plates have unique physical and chemical properties due to their special alloy composition, which can meet some special application needs.

In general, pure titanium plates and composite titanium plates have different compositions, properties, and applications, and need to be selected according to specific usage environments and requirements.