American q345b hot rolled steel sheet stock

Hydrogen (H) is the most harmful element in general steel such as q345b hot rolled steel 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.

A514 grade S high strength structural steel chemical composition (melting analysis)%C: 0.11-0.21, Si: 0.15-0.45, Mn: 1.10-1.50, P max.: 0.035, S max.: 0.035, B max.: 0.005, Mo: 0.10-0.60, V max.: 0.06.The mechanical properties in thickness (mm) T≤65Yield strength (≥Mpa): 690Tensile strength (Mpa):760-895Elongation in ≥, %: 18

Compared with other fast-moving consumer goods, steel consumption is obviously different, with a wide range of use and a long service life. Therefore, the quality and service of steel materials are particularly important. Service is always one of our top concerns, especially after-sales service. We have mature after-sales service team, and can help you solve problems professionally during application of the steel materials.

As we are supplying EN 10028-3 Grade P355NH fine grained structure steel plates and q345b hot rolled steel sheet in China since 2008 to many petrochemical companies and in energy sector industries. We have become a preferred hot-rolled plates supplier in China.