This paper describes the metallurgical approaches for producing 415MPa and 460MPa yield strength offshore structural steel plates and the mechanical properties of the steel plates and their welded joints. A thermo-mechanical control process (TMCP) was adopted to manufacture YP415MPa and YP460MPa steel plates with weldability comparable to conventional YP355MPa steel plates. The Charpy impact and CTOD tests of the steel plates and their welded joints proved to be very good.
Development of High-Strength Steel Plates for Low-Temperature Use
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Nakano, Y., Saito, Y., Amano, K., Koda, M., Sannomiya, Y., and Kobayashi, E. (September 1, 1988). "Development of High-Strength Steel Plates for Low-Temperature Use." ASME. J. Energy Resour. Technol. September 1988; 110(3): 171–176. https://doi.org/10.1115/1.3231378
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