EH36 ship plate steel plate introduction
1. EH36 is a high-strength ship plate, which is a steel plate made of hot-rolled structural steel for the hull. The size, shape, weight and allowable deviation of EH36 steel plate shall comply with the provisions of GB/T709, and the deviation under thickness shall be -0.3mm.
2. EH36 ship plate is delivered in the state of quenched and tempered, normalizing, thermomechanical rolling + tempering. The steel plates should be delivered in shear or flame cutting.
3. Nondestructive testing of EH36 ship plate Z-direction steel plate should be ultrasonic flaw detection, and the flaw detection level should be indicated in the contract According to the requirements of the buyer, by the agreement of the supplier and the buyer, other steel plates can also be non-destructive testing EH36 Origin: Wuyang Steel Mill EH36 specifications: 8-120mm
| Chemical composition |
| Tabulation: Depu Steel Date: 2024-01-18 |
| C |
Si |
Mn |
P |
S |
N |
| ≤0.21 |
≤0.55 |
≤1.7 |
≤0.03 |
≤0.03 |
≤0.02 |
Note:
(1): In order to improve the properties of steel, the number of other trace alloying elements other than the above table can be added; It comes from the Internet and is for reference only.
(2): The allowable deviation of the chemical composition of the finished steel plate should be in accordance with the provisions of
GB/T222 In order to ensure the performance of high-strength ship plates, microalloying technology is adopted. By adding alloying elements such as Nb, V, and Ti to the steel, combined with the controlled rolling process, the grain is refined and the toughness is improved. Due to billet type and billet weight limitations, many manufacturers are unable to produce extra-thick ship plates. Pugang Thick Plate Mill and Wuhan Iron and Steel Thick Plate Mill can use large slabs or large ingots to roll ship plates with a thickness greater than 50mm. D, E series ship plates are required to have good low-temperature toughness, good welding performance, which must be guaranteed in the steel smelting process first, and secondly, effective control rolling and cooling processes must be implemented. In recent years, major domestic iron and steel companies have fully realized the importance of improving the internal quality of steel, relying on the progress of smelting technology to improve molten iron desulfurization slag, steelmaking hydrogen blowing, vacuum refining outside the furnace, etc., to significantly reduce the harm of steel. The content of elements and impurities.
