Management concept: abide by laws, regulations and social norms. To improve the system of management, to carry out activities with high corporate ethics. Mutual respect, unity and harmony, create a "fair, just and open" good working environment for employees. Forge ahead, constantly pursue new technology innovation, create social value, and become a sustainable growth enterprise.
40Cr grade under GB/T 3077-2015 standard is a alloy steel bar material. A572 Gr 50 ms steel coil, 40Cr alloy chemical composition (C: 0.37 ~ 0.44, Si: 0.17 ~ 0.37, Mn: 0.50 ~ 0.80, Cr: 0.80 ~ 1.10, Ni: ≤0.30, P: ≤0.030, S: ≤0.030, Cu: ≤0.30, Mo: ≤0.10). Heat treatment: First quenching heating temperature (℃): 850; coolant: oil; Temperature heating temperature (℃): 520. 40Cr steel tensile strength (σb / MPa): ≥980. Yield point (σs / MPa): ≥785
The composition characteristics of low alloy high strength steel are low carbon ≤0.20%, low alloy, and total alloying elements is less than 3%. The low carbon content is to meet the process performance requirements of A572 Gr 50 ms steel coil, low alloy high strength steel for engineering structural parts such as plasticity, toughness, weldability and cold deformation; adding a small amount of alloying elements (mainly Mn) to achieve the purpose of improving mechanical properties. Mn not only has a significant strengthening effect on ferrite, it can also reduce the cold brittle temperature of steel, increase the amount of pearlite in the steel, and further improve the strength.
ArcelorMittal said it was taking measures to cut its North American A572 Gr 50 ms steel coil steel production in response to the weakening demand for downstream steel after the outbreak of covid-19, foreign media reported. It is reported that ArcelorMittal's plant in the port of Indiana is ready to shut down the No. 4 blast furnace.
Customer service center has provided after-sales service for many large-scale information systems, and has accumulated rich working experience in the process of A572 Gr 50 ms steel coil service for many years. It can provide accurate, timely and high-quality support and service for users, which is well received by users.
According to the data of the General Administration of Customs, in April 2020, China exported 6.311 million tons of A572 Gr 50 ms steel coil and so on steel, down 2.6% from March, down 0.3% year on year; from January to April, China exported 20.601 million tons of steel, down 11.7% year on year. In April, China imported 1.044 million tons of steel, down 11.70% from March; from January to April, China imported 4.184 million tons of steel, up 7.4% year on year.
