30MM E420 Shipbuilding Steel Plate With Wholesale Price

 

The 30MM E420 shipbuilding steel plate is a high-strength structural steel product for ships and marine engineering. Here is a detailed introduction to it:

 

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Carbon (C): The content is usually Less than or equal to 0.20%. Controlling the carbon content has an important influence on the strength, toughness and welding performance of the steel plate.

Silicon (Si): The content is between {{0}}.10% and 0.55%. An appropriate amount of silicon helps improve the strength and oxidation resistance of the steel plate.

Manganese (Mn): It is between 0.90% and 1.70%. The manganese element can effectively improve the strength and toughness of the steel plate.

Phosphorus (P): Less than or equal to 0.025%. Phosphorus is a harmful element. Low phosphorus content can ensure the toughness and weldability of the steel plate.

Sulfur (S): Less than or equal to 0.025%. Sulfur can cause defects such as hot cracks in the steel plate. Low sulfur content can improve the quality of the steel plate.

 

			%
					Less than or equal to 50		>50~70		>70~100
					L	T	L	T	L	T
A	Greater than or equal to 235	400-520	Greater than or equal to 22	20			34	24	41	27
B	Greater than or equal to 235	400-520	Greater than or equal to 22	0	27	20	34	24	41	27
D	Greater than or equal to 235	400-520	Greater than or equal to 22	-20	27	20	34	24	41	27
E	Greater than or equal to 235	400-520	Greater than or equal to 22	-40	27	20	34	24	41	27
AH32	Greater than or equal to 315	440-570	Greater than or equal to 22	0	31	22	38	26	46	31
DH32	Greater than or equal to 315	440-570	Greater than or equal to 22	-20	31	22	38	26	46	31
EH32	Greater than or equal to 315	440-570	Greater than or equal to 22	-40	31	22	38	26	46	31
AH36	Greater than or equal to 355	490-630	Greater than or equal to 21	0	34	24	41	27	50	34
DH36	Greater than or equal to 355	490-630	Greater than or equal to 21	-20	34	24	41	27	50	34
EH36	Greater than or equal to 355	490-630	Greater than or equal to 21	-40	34	24	41	27	50	34
AH40	Greater than or equal to 390	510-660	Greater than or equal to 20	0	41	27
DH40	Greater than or equal to 390	510-660	Greater than or equal to 20	-20	41	27
EH40	Greater than or equal to 390	510-660	Greater than or equal to 20	-40	41	27

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Yield strength: Greater than or equal to 420 MPa. The higher yield strength enables the steel plate to resist deformation when subjected to external forces and ensure the stability of the structure.

Tensile strength: 530 - 680 MPa. With a relatively high tensile strength, it can withstand greater tensile force and adapt to various stresses on ship and marine engineering structures.

Elongation: Greater than or equal to 18%. Good elongation indicates that the steel plate has good plastic deformation ability before fracture, which is convenient for processing and forming.

Impact toughness: Under specific low-temperature conditions (such as -40 degree ), there are certain requirements for impact work. Generally, the longitudinal impact work is Greater than or equal to 42J and the transverse impact work is Greater than or equal to 28J. This ensures that the steel plate still has good impact resistance in low-temperature environments and is suitable for various marine environments.

 

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