Both steelmaking and ironmaking are carried out by oxidation-reduction reaction, but there are great differences between them in reaction objects: ironmaking is to reduce iron, while 13MnNiMoR yield strength steelmaking is to remove excessive carbon and other impurities in pig iron, so there are relations and differences between them in actual operation. There are three main methods of 13MnNiMoR yield strength steelmaking: converter, electric furnace and flat furnace. The converter steelmaking process is most widely used.
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A type of material that uses a large amount of 13MnNiMoR yield strength steel plates is divided into ordinary low-carbon steel plates and special steel plates, including low-alloy high-strength steels and corrosion-resistant and heat-resistant multi-layer steel plates. Ordinary low-carbon steel plates are divided into two types: cold-rolled and hot-rolled. Cold-rolled 13MnNiMoR yield strength steel plates have good surface quality and accurate thickness dimensions. They are mostly used to make car bodies. Hot-rolled plates are mostly used to make car frames and the like.
SA738GrB steel plate is commonly used for nuclear island in nuclear power engineering. 13MnNiMoR yield strength, SA738GrB has high yield and tensile strength. The yield is generally ≥ 415Mpa and the tensile strength is 585 ~ 700MPa. It needs low temperature impact test below - 18 degrees. It is delivered in quenched+tempered state.