Special steel plate for ship

Here are some shipbuilding plates of American, European, German and Japanese standards along with their chemical compositions, properties and applications:

American Standards:

- ASTM A131:

- Chemical Composition: It contains carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), and small amounts of other alloying elements. For example, carbon content is usually around 0.21% max, manganese 0.80%-1.20%, silicon 0.15%-0.50%, phosphorus 0.035% max, sulfur 0.035% max.

- Properties: It has good weldability, moderate strength and toughness. The yield strength can reach around 235 MPa, tensile strength around 400-520 MPa. It also has good corrosion resistance in marine environments to a certain extent.

- Applications: Widely used in the construction of ship hulls, decks, bulkheads and other structural parts. It can also be used in offshore platforms and other marine engineering structures.

European Standards:

- EN 10225:

- Chemical Composition: Comprises carbon, silicon, manganese, phosphorus, sulfur and specific alloying elements depending on the grade. For instance, in some grades, carbon content may be in the range of 0.10%-0.22%, manganese 1.00%-1.65%, silicon 0.10%-0.55%, phosphorus 0.030% max, sulfur 0.025% max.

- Properties: Offers good toughness at low temperatures, excellent weldability and high strength. Different grades have varying yield strengths ranging from around 275 MPa to 460 MPa and tensile strengths from 410 MPa to 630 MPa.

- Applications: Used for the construction of offshore structures, oil and gas platforms, and various types of ships including tankers, container ships and bulk carriers.

German Standards:

- DIN 17102:

- Chemical Composition: Contains defined amounts of carbon, silicon, manganese, phosphorus, sulfur and alloy elements. For example, carbon content might be around 0.12%-0.20%, manganese 0.50%-1.60%, silicon 0.10%-0.55%, phosphorus 0.035% max, sulfur 0.035% max.

- Properties: Known for its good formability and weldability. It has moderate to high strength with yield strengths ranging from about 235 MPa to 490 MPa and tensile strengths from 360 MPa to 630 MPa.

- Applications: Applied in the shipbuilding industry for hull structures, decks and machinery parts. Also used in the construction of pressure vessels and other industrial equipment.

Japanese Standards:

- JIS G3101 SS400:

- Chemical Composition: Consists of carbon (C) around 0.25% max, silicon (Si) 0.30% max, manganese (Mn) 0.60%-1.40%, phosphorus (P) 0.040% max, sulfur (S) 0.040% max.

- Properties: Has moderate strength and good ductility. Yield strength is approximately 245 MPa, tensile strength around 400-510 MPa. It is relatively easy to fabricate and weld.

- Applications: Commonly used in the construction of small to medium-sized ships, ship fittings and some marine equipment. Also used in general structural applications in various industries.

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