The difference between cold rolled steel sheet and hot rolled steel plate. The carbon content of A709 Gr 50W carbon steel plate, hot rolled steel plate is slightly higher than that of cold rolled steel sheet. In the case of little difference in composition, the density of cold rolled steel sheet and hot rolled steel plate is the same. Hot rolled steel plate has characteristics of low hardness, easy processing and good ductility. Cold rolled steel sheet has high hardness, and it is relatively difficult for processing. But it is not easy to deform and has high strength. Hot rolled steel plate can be made into alloy steel plate by adding other elements, and its properties are also excellent compared with other high-quality steel plates.
In 2019, A709 Gr 50W carbon steel plate, crude steel production in North America was 120 million tons, down 0.8% year-on-year, among which crude steel production in the United States in 2019 was 87.9 million tons, up 1.5% year-on-year. The crude steel output of the CIS countries in 2019 was 100.4 million tons, down 0.5% year on year.
S355G10 + M steel plate is for marine engineering. "S" indicates structural steel, "355" indicates minimum yield strength of steel plate, and "G10" indicates mechanical function test that imitates post-weld heat treatment. "M" indicates control rolling. S355G10 + M plate is structural steel for marine engineering and belongs to European standard high-strength structural steel. S355G10 + M steel plate has good mechanical function, welding function and technological function.
