Most common RE 40 marine grade ship steel plate steel plates are rolled by hot rolling or controlled rolling. Compared with the general hot rolling process, the advantages of controlled rolling are: the strength and low temperature toughness of steel plates are greatly improved by controlled rolling to refine grains. In addition, the controlled rolling process can give full play to the role of Microalloying Elements Nb, V and Ti, not only play a role of precipitation strengthening, but also refine the grains, and improve the toughness of the rolled RE 40 marine grade ship steel plate steel plates.
The basic phases of RE 40 marine grade ship steel plate, structural steel in the annealed state are ferrite and carbide. The alloy elements are dissolved in ferrite to form alloy ferrite, which depends on solid solution strengthening to increase strength and hardness, but at the same time reduce plasticity and toughness. The addition of alloying elements reduces the carbon content of the eutectoid point, which increases the proportion of pearlite in the structure and reduces the distance of the pearlite layer. This also increases the strength of the steel and reduces the plasticity.
Shipbuilding steel RE 40 marine grade ship steel plate order online:14*1950*10700, 14*1950*10800, 16*2100*10650, 16*2150*10000, 16*2150*10250, 16*2150*10350, 16*2150*10400, 20*2100*11600, 20*2150*10000, 25*1950*10150, 25*1950*9700, 25*2100*8400, 25*2100*8650, 25*2400*11600, 32*2500*6000, 34*1900*12000, 34*1300*4000, 35*2500*9000, 70*2240*7600, 70*2270*7470, 70*2270*7900, 85*2230*8100.
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