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:

 

Chemical Composition:

 

Carbon (C): The content is usually ≤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): ≤0.025%. Phosphorus is a harmful element. Low phosphorus content can ensure the toughness and weldability of the steel plate.

Sulfur (S): ≤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.

Other elements: It may contain a small amount of alloy elements such as niobium (Nb), vanadium (V), and titanium (Ti). These elements can further improve the performance of the steel plate.

 

Grade	Yield Strength MPA	Tensile Strength MPA	Elongation %	Test Temperature °C	V Ballistic Work
					Thickness mm
					≤50		>50~70		>70~100
					L	T	L	T	L	T
A	≥235	400-520	≥22	20			34	24	41	27
B	≥235	400-520	≥22	0	27	20	34	24	41	27
D	≥235	400-520	≥22	-20	27	20	34	24	41	27
E	≥235	400-520	≥22	-40	27	20	34	24	41	27
AH32	≥315	440-570	≥22	0	31	22	38	26	46	31
DH32	≥315	440-570	≥22	-20	31	22	38	26	46	31
EH32	≥315	440-570	≥22	-40	31	22	38	26	46	31
AH36	≥355	490-630	≥21	0	34	24	41	27	50	34
DH36	≥355	490-630	≥21	-20	34	24	41	27	50	34
EH36	≥355	490-630	≥21	-40	34	24	41	27	50	34
AH40	≥390	510-660	≥20	0	41	27
DH40	≥390	510-660	≥20	-20	41	27
EH40	≥390	510-660	≥20	-40	41	27

Mechanical Properties:

 

Yield strength: ≥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: ≥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°C), there are certain requirements for impact work. Generally, the longitudinal impact work is ≥42J and the transverse impact work is ≥28J. This ensures that the steel plate still has good impact resistance in low-temperature environments and is suitable for various marine environments.

 

Delivery Status:
Multiple delivery statuses can be provided, such as hot rolling, controlled rolling, normalizing, annealing, tempering, quenching and tempering. Different delivery statuses will give the steel plate different performance characteristics, and users can choose according to specific usage requirements.

 

 

Why Choose Us?
We take pride in our ability to provide custom solutions for our customers' unique needs.
We analyze and compare the previous products and the current technical situation of our 30MM E420 Shipbuilding Steel Plate With Wholesale Price, and develop new technical specifications and processes.
Our customers trust us to deliver high-quality Cold-rolled Steel products on time and on budget.
We strictly implement the warm and thoughtful after-sales service, adhere to the development of good professional ethics.
We offer a wide range of Cold-rolled Steel products to meet diverse customer needs.
We adhere to the customer-centric and brand-oriented business philosophy, and continue to provide customers with reliable and excellent products and services.
Our factory is committed to upholding the highest standards of safety and quality.
All staff of our company and all departments work together to combine business management, professional technology, quantitative statistical methods and ideological education.
Our Cold-rolled Steel products are known for their durability and reliability.
Relying on the superior conditions and strong advantages of mass production, we are able to meet the different needs of our customers.

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