How to choose the marine steel?

With the development of the shipping industry, marine steel has gained attention as an important material for ship construction and maintenance. So, what are the types of marine steel? How to choose the right marine steel?

The importance of marine steel and its application areas introduction
Importance of Marine Steel

Marine steel is an indispensable key material in ship construction, which assumes the important role of supporting, protecting and strengthening the hull structure. The amount of steel used in a ship can reach thousands of tons, so the selection of suitable marine steel is essential to ensure that the hull structure is strong and durable.

Application areas of marine steel

According to different parts and functional requirements, the hull structure needs to use different kinds of steel with different strength and corrosion resistance. It mainly includes the following aspects:

(1) Rolled plate: mainly used in the bottom plate, deck and other large-area structures, with high strength and good toughness.

(2) Section steel: mainly used for hull frame, support and connection parts, with high strength and rigidity.

(3) Welding steel: used for welding various connection parts of the hull structure, with good welding performance and corrosion resistance.

(4) Corrosion-resistant steel: mainly used in underwater parts of the hull, such as the bottom of the ship, rudder blade, etc., with excellent corrosion resistance.

(5) Special steel: such as high-strength steel, wear-resistant steel, etc., used in specific occasions and functional needs, can improve the strength and durability of the hull structure.

How to choose the right marine steel

When choosing suitable marine steel, the following aspects need to be considered:

(1) Selecting steel with good corrosion resistance according to the environment in which it is used to ensure that the hull structure is free from seawater erosion for a long time.

(2) According to the design requirements and functional needs to select the steel with matching strength and toughness, in order to ensure that the hull structure has sufficient strength and risk resistance.

(3) According to the consideration of cost and reliability, choose the steel with lower cost as far as possible under the premise of meeting safety requirements.

(4) According to the use of the ship and life expectancy, choose the steel with good durability to ensure that the hull structure has a long service life.

Common types of marine steel and its characteristics analysis
1. Plate steel: Plate steel is one of the most common and important types of marine steel. It is mainly used in the hull of the ship plate and keel and other structural parts, with good strength and weldability. According to different usage environments and requirements, ship plate steel can be further classified into several types, such as general ship plate steel, weather resistant ship plate steel, corrosion resistant ship plate steel and so on.

2. Outfitting steel: Outfitting steel is mainly used in the manufacture of doors, windows, decks, stairs and other parts of the hull. It has high strength and good corrosion resistance, and can withstand the effects of seawater erosion and climate change. Depending on the environment, outfitting steel can be categorized into general outfitting steel, seawater corrosion resistant outfitting steel, etc. 3.

3. Anchor chain steel: Anchor chain is the material used to make the anchor chain, which is a necessary equipment to ensure the safe mooring or anchoring of vessels at sea. It has high strength, high toughness and good abrasion resistance, and has a long service life in the marine environment. According to different anchor chain structure and use requirements, anchor chain steel can be divided into ordinary anchor chain steel, high strength anchor chain steel and other types. 4.

4. Marine bearing steel: Marine bearing steel is mainly used in the manufacture of ship's transmission shaft, steering shaft and other parts. It has good wear resistance and corrosion resistance, and can withstand large loads and vibration. According to different use environment and requirements, marine bearing steel can be divided into general marine bearing steel, seawater corrosion marine bearing steel and other types. 5.

5. Marine welded structural steel: marine welded structural steel is mainly used for manufacturing the welded structural parts of the hull, such as deck, shell, etc. It has good welding performance and strength. It has good welding performance and strength, and can meet the manufacturing needs of complex shapes and large size parts. According to different use environment and requirements, marine welded structural steel can be divided into general marine welded structural steel, seawater corrosion resistant marine welded structural steel and other types.

Selection of suitable marine steel requires consideration of various factors, such as the use of the ship's environment, load requirements, structural form and so on. At the same time, it is also necessary to select the steel that meets the requirements according to the relevant standards and codes. In practical application, suitable marine steel can also be selected based on experience and professional knowledge to ensure the safety and durability of the ship.