What is the Difference between Flat Steel and Steel Plate?

Flat steel and steel plate are two common forms of metal materials. They have some differences in use, shape and manufacturing process:

1. Shape and size

Flat steel: Flat steel usually has a rectangular cross-section, with a relatively large width, a relatively small thickness, and a long length. Their width and thickness ratios vary, and their exact dimensions depend on use and manufacturing standards.

Steel Plate: Steel plate is usually rectangular in shape, with a relatively large length and width, and at the same time a large thickness. Compared with flat steel, steel plates are thicker and are usually used to bear greater loads or provide greater structural support.

2. Application

Flat steel: often used to manufacture components, mechanical parts, brackets, connectors, etc., and can also be used to manufacture some special-shaped parts, such as angle iron, flat iron, etc.

Steel plate: Due to its larger thickness, it is often used to manufacture ships, bridges, building structures, containers, automobile parts and other engineering projects that require greater strength and load-bearing capacity.

3. Manufacturing process

Flat steel: Usually produced by hot rolling or cold rolling, the steel billet is processed into a flat rectangular cross-section by rolling.

Steel Plate: Manufacturing steel plate typically involves larger rolling equipment that processes billet steel into the required thickness and size via hot or cold rolling.

Flat steel is a section steel. Like angle steel and channel steel, there are two forming methods: hot rolling and cold drawing. The maximum width of hot rolling is 150mm and the maximum thickness is 60mm. Steel plates and steel strips belong to the same category, and are divided into hot-rolled and cold-rolled. In terms of mechanical properties, the rolling method is the same and the materials are the same, so they are similar to flat steel. After rolling, both sides of the flat steel are arc-shaped, not flush.

Common steel plate materials include ordinary carbon steel, stainless steel, high-speed steel, high manganese steel, etc. Their main raw material is molten steel, which is a material made by mechanical pressing after the molten steel is poured and cooled. Most steel plates are flat or rectangular, which can not only be pressed mechanically, but also cut from wide steel strips.

In general, flat steel and steel plates differ in shape, size, purpose and manufacturing process, and the selection of the appropriate material depends on specific engineering needs and design requirements.