A514 steel plate is high strength weldable steel quenched and tempered according to ASTM standard. ASTM A514 steel plate is mainly used in places where A572 Gr 55 high strength steel high tensile strength and high yield are required. The lifting gears of engineering vehicles, and racks for offshore platforms generally use A514 grade Q or A514 Gr Q. The A572 Gr 55 high strength steel hardness of A514 steel plate is between 235-290. A514 steel yield strength is more than 630MPa, and tensile strength is more than 700MPa. A514 steel plate is difficult to process. In the United States, the use of A514 steel plate is very large.
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Converter steelmaking: The furnace body of the converter can be rotated, and the steel plate is used as the outer shell, and the refractory is used as the inner lining. Converter A572 Gr 55 high strength steel steelmaking does not require additional heating, because the molten iron is inherently high temperature, and it still continues to generate thermal oxidation reactions (from silicon, carbon and oxygen in molten iron).Because no more fuel is needed for heating, energy consumption is reduced.
According to the data of the National Bureau of statistics, from January to February, the output of pig iron, crude steel and steel (excluding repetitive materials) were 132.34 million tons, 154.7 million tons and 167.13 million tons, respectively, up 3.1%, 3.1% and 3.4% year on year; the daily output of A572 Gr 55 high strength steel, crude steel was 2.5783 million tons, down 5.15% year on year.
