Q235D steel plate is a kind of low carbon steel, containing a small amount of alloy elements, such as manganese, silicon, phosphorus, etc., and has good strength and plasticity. Its yield strength is 235MPa, tensile strength is 370-500MPa, and elongation is 21-29%. In addition, Q235D steel plate also has good toughness and corrosion resistance, and can meet various engineering needs.
The manufacturing process of Q235D steel plate mainly includes steelmaking, rolling and heat treatment. First of all, the steelmaking process is mainly to remove impurities and harmful elements from the molten iron to ensure the purity and quality of the steel plate. Secondly, the rolling process is mainly to shape and process the steel plate after steelmaking to obtain the required shape and size. Finally, the heat treatment link mainly heats and cools the steel plate to improve its mechanical properties and processing performance.
In order to standardize the manufacture and use of Q235D steel plates, our country has formulated corresponding industry standards. Among them, "GB/T 700-2006 Carbon Structural Steel" is the standard that must be followed in the production and use of Q235D steel plates. This standard stipulates the chemical composition, mechanical properties, size and shape of Q235D steel plates to ensure the stability of its quality and performance.
