Both strip, foil, sheet and plate are flat steel products. The thickness and width definitions vary by standards and geography.
In thickness order (thin to thick):
Foil. Sold as coils.
Strip (narrow width). Sold as slitted coils or cut-to-length sheets.
Sheet (wider width). Sold as coils or cut-to-length sheets.
Plate. Sold as coils or flat plates.
Strip materials are suitable for applications such as automotive parts, building panels, household appliances, precision components, and springs, where tight tolerances and smooth surfaces are important. Plate materials are often used, for example, in heavy machinery, construction equipment, wear plates, and large structural components, where strength and durability are crucial. The choice between strip and plate materials depends on the specific requirements of the application, such as size, shape, strength, and surface finish. However, there are also overlapping uses in some applications, such as containers and trucks.