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GL EH36 ship steel plates

GL EH36 ship steel plates

GL EH36 grade steel is a high-strength ship plate. E is a quality grade E, H is a high-strength building material, 36 is the maximum compression. Shipbuilding steel generally refers to the steel used for hull structure, which refers to the steel used for manufacturing the hull structure produced according to the requirements of the classification society. GL EH36 ship steel plates are often used as special steel for ordering, production scheduling, and sales. One ship includes ship plates and section steel.
GL Grade EH36 steel chemical composition%:
C: ≤0.18, Si: ≤0.50, Mn: 0.90~1.60, P: ≤0.035, S: ≤0.035, Als: ≥0.015, Nb+V+Ti: ≤0.12, Cu: ≤0.35, Ni: ≤0.40
GL EH36 ship steel mechanical properties:
ReH/MPa: ≥355, Rm/MPa: 490~620, Al%: ≥21, test temperature/:-40

GL EH36 steel plates technical requirements:
GL Grade EH36 steel is a high-strength ship plate. In order to obtain good low temperature toughness and weldability, it is necessary to refine and uniform the grains in the entire cross section and thickness direction of the steel plate. Measures for grain refinement and uniformity: on the one hand, in the process of controlling rolling, the reduction amount and rolling speed of each pass should be rationally designed. When rolling in the austenite recrystallization zone, try to increase the single pass reduction: when rolling in the austenite non-recrystallization zone, a large cumulative deformation rate (≥60%) should be ensured. Perform rapid cooling to control the grain size in the rolled state. On the other hand, the proper normalizing process system can further refine the grains and make the grain size uniform.
GL EH36 ship steel plates welding performance:
GL EH36 high-strength shipboard normalizing steel plate for offshore platform not only requires high strength, but also requires good welding performance of the steel plate. The results of welding tests with a line energy of 15kJ/cm and 50k3J/cm show that the strength of the welded joint is equivalent to that of the base material, the welded joint has no obvious embrittlement and softening zone, and the impact toughness of the weld, coarse grain zone and two-phase zone The indicators are good, which proves that the steel plate has good reliability.

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