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Can A131 AH36 steel plate and GL grade A steel plate replace each other
For A131 AH36 steel plate, H stands for high strength, 36 stands for 360MPa, A stands for steel grade, which can be divided into four grades (A, B, D, E), so the code means that the allowable pressure is 360MPa high strength A-class marine steel. The general strength structural steel of A131 standard is divided into four quality grades (i.e. A131 grade A, A131 grade B, A131 grade D, A131 grade E); the high strength structural steel of A131 standard is divided into three strength level, four quality levels.
GL grade A steel plate is general strength hull structural steel, and A131 AH36 steel plate is high strength hull structural steel. Obviously, it is not suitable to replace A131 AH36 steel plate and GL grade A steel plate with each other. That is to say, the general strength GL grade A steel plate can not replace the high strength A131 AH36 steel plate, and the replacement of the high strength A131 AH36 steel plate for general strength GL grade A steel plate is obviously unreasonable from the cost point of view.