Gl-A Shipbuilding Steel Plate

GL-A shipbuilding steel plate is a type of marine steel plate with certain characteristics in terms of chemical composition, mechanical properties, and application. Here are the details:

 

Chemical composition:

Carbon (C): The carbon content is relatively low, usually not exceeding 0.21%. A lower carbon content helps to improve the weldability and ductility of the steel plate.

Manganese (Mn): The manganese content is relatively high, which is generally in accordance with the requirement of Mn ≥ 2.5×C. Manganese can enhance the strength and hardness of the steel.

Silicon (Si): The silicon content is not more than 0.50%. Silicon can improve the oxidation resistance and high-temperature performance of the steel to a certain extent.

Phosphorus (P) and Sulfur (S): The contents of phosphorus and sulfur are both very low, with P not exceeding 0.035% and S not exceeding 0.035%. Low contents of these two elements are beneficial to improve the quality and performance of the steel, reducing the possibility of defects such as cracks and inclusions.

Mechanical properties:

Tensile strength: The tensile strength of GL-A shipbuilding steel plate is in the range of 400 - 520 MPa. This means that the steel plate can bear a certain amount of tensile stress without breaking, ensuring the strength and stability of the structure in use.

Yield strength: The yield strength is 235 MPa or more. Yield strength is an important indicator of the material's ability to resist deformation. A higher yield strength indicates that the steel plate is less likely to deform under load.

Elongation: The elongation in 2 inches (50 mm) is not less than 22%. High elongation shows that the steel plate has good ductility and can be deformed to a certain extent without cracking, which is convenient for processing and manufacturing in the shipbuilding process.

Impact resistance: The impact test is an important test for shipbuilding steel plates. The impact test temperature of GL-A shipbuilding steel plate is usually 20°C, and it needs to meet certain impact energy requirements to ensure that the steel plate can withstand impact loads in the marine environment.

 

 

 

Mechanical Property of GL/B normal strength
Grade	Thickness	Yield Strength	Tensile Strength	Elongation	Charpy V Notch Impact Test
					Degree	Value 1	Value 2
GL/B	mm	Min Mpa	Mpa	Min %	0	J	J
	t≤50	235	400-520	22%		20	27
	50<t≤70	235	400-520	22%		24	34
	70<t≤100	235	400-520	22%		27	41
Note: Value 1 is transverse impact test, Value 2 is longitudinal

Equivalent steel grade of GL/B
LR	BV	ABS	CCS	KR	DNV	NK	RINA
LR B	BV/B	AB/B	CCS/B	KR/B	NV/B	NK/B	RI/B

 

 

Ship hull construction: This is a primary application of GL-A shipbuilding steel plate. The hull of a ship is constantly exposed to various forces such as water pressure, wave impact, and the ship's own weight. GL-A steel plate's high strength, good ductility, and excellent weldability make it suitable for building the main structure of the ship hull, ensuring the overall strength and stability of the ship.

Maritime oil extraction drilling platforms: Offshore oil extraction drilling platforms are in a harsh marine environment and require materials with high strength and corrosion resistance. GL-A shipbuilding steel plate can meet these requirements, being used in the construction of the main structure of drilling platforms, such as the platform deck, support structure, and wellhead equipment support.

Platform tube junctions: The connection parts of offshore platforms need to bear complex forces and have high requirements for the performance of materials. GL-A shipbuilding steel plate is used in platform tube junctions to ensure the reliability and safety of the connection structure.

Other marine structural components: In addition to the above applications, GL-A shipbuilding steel plate can also be used in the manufacturing of other marine structural components, such as bulkheads, rudders, and mooring equipment, to meet the needs of different parts of the ship or marine structure for material performance.

 

 

 

 

 

 

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 Gl-A Shipbuilding Steel Plate, 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.

Hot Tags: gl-a shipbuilding steel plate, China gl-a shipbuilding steel plate suppliers, factory, Cu19Ni4Fe4, SUS202, CR210IF, 1 4521, 1 4028, 8620