What is Q235D carbon steel plate sheet modified plate

ASTM A588 is a high strength low alloy HSLA steel (high strength, low alloy) containing a small amount of alloying elements copper, chromium and AMP. Nickel. These alloying elements effectively improve the properties of A588 and expand its application range. Firstly, the alloy composition increases the Q235D carbon steel plate sheet yield point strength to 50 Ksi and the tensile strength to 70 Ksi. Secondly, A588 Q235D carbon steel plate sheet has high copper content, atmospheric corrosion resistance and long working time. Because of its excellent comprehensive performance, A588 angle steel is widely used in bridge, building and other structural fields.

Hydrogen (H) is the most harmful element in general steel such as Q235D carbon steel plate sheet. Hydrogen dissolved in steel will cause hydrogen embrittlement, white spots and other defects. Hydrogen, like oxygen and nitrogen, has very little solubility in solid steel. It dissolves into liquid steel at high temperature, and accumulates in the structure without time to escape when cooling, forming high-pressure micro pores, which greatly reduce the plasticity, toughness and fatigue strength of steel, and even cause cracks and brittle fracture in severe cases. "Hydrogen embrittlement" mainly occurs in martensitic steel, but not very prominent in ferrite steel, and generally increases with hardness and carbon content.

Compared with thick steel plates, Q235D carbon steel plate sheet, thin steel plates have many obvious advantages in steel plate processing and use. It is precisely these advantages of thin steel plates that make them more and more popular in various industries. First, compared to those thicker steel plate materials, thin steel plates are generally thinner in thickness. Thin steel plates themselves are lighter and thinner, and their weight is lighter, which is very convenient for handling during construction and transportation. It can save some storage and transportation space.