11MnNiMoDR is a steel plate for low-temperature pressure vessel with impact temperature: -70℃. The implementation of GB713-2014 standard. The suffix "R" in the grade refers to the pinyin initials of "Rong" for pressure vessel, 11 means that the carbon content is 0.11%, and Mn, Ni, Mo in the grade means that the chemical elements manganese, nickel, molybdenum content is high. 11MnNiMoDR steel plate is melted by oxygen top-blowing converter method, flat furnace method or in electric furnace. Oxygen top-blowing converter method, flat furnace method or melting in electric furnace. Other equivalent methods can also be used after consultation with the demand side.
Carbon is one of the main elements of 11MnNiMoDR steel plate, which can improve the hardness and strength of steel plate, but too much carbon will reduce the toughness and weldability of steel plate. Silicon can improve the strength and toughness of the steel plate and is often used as a deoxidizer in the manufacturing process. Manganese is an important alloying element that can improve the strength and heat resistance of steel plates. Phosphorus and sulfur have less effect on steel plate, but too much phosphorus and sulfur will reduce the workability and weldability of steel plate.
11MnNiMoDR steel plate itself has high quality properties such as high strength, low temperature resistance, impact resistance, abrasion resistance, corrosion resistance, fatigue resistance, high toughness, compression resistance and welding ease of processing.
