Ship Building Steel Plate
Shipbuilding Steel Plate
Shipbuilding steel plates are crucial for constructing ships and other marine structures due to their strength, durability, and resistance to harsh marine environments. Here’s a detailed overview of the technical information associated with these steel plates.
Applications
- Hull Construction: Ideal for the primary structural component of ships, ensuring robust and resilient hulls.
- Decks and Superstructures: Perfect for constructing decks and superstructures that require high strength and durability.
- Offshore Platforms: Suitable for use in offshore oil rigs and platforms, offering reliability in harsh marine environments.
- Marine Equipment: Can be used in the manufacture of various marine equipment and components, ensuring their long-lasting performance.
- Cargo Holds and Tanks: Steel plates are used in the construction of cargo holds and various tanks (like fuel and ballast tanks) to ensure they can withstand the pressure and corrosive nature of the materials they contain.
Grades and Specifications
Grades
- AH36, DH36, EH36: These are high-strength steel grades used for ship hulls and structures. AH36 is the standard grade for shipbuilding steel, DH36 is used for lower temperatures, and EH36 is used for higher strength requirements.
- A, B, D, E: These grades are specified for general shipbuilding needs, with variations based on impact toughness and mechanical properties.
Specifications:
- ASTM A131: This standard specification covers structural steel for ships, including various grades and requirements.
- ISO 630: An international standard that includes general requirements for structural steels used in shipbuilding.
Applications
- Hull Construction: Ideal for the primary structural component of ships, ensuring robust and resilient hulls.
- Decks and Superstructures: Perfect for constructing decks and superstructures that require high strength and durability.
- Offshore Platforms: Suitable for use in offshore oil rigs and platforms, offering reliability in harsh marine environments.
- Marine Equipment: Can be used in the manufacture of various marine equipment and components, ensuring their long-lasting performance.
Chemical Composition for Ship Building Steel Plates
| Element | Grade A | Grade B | Grade D | Grade E | AH36 | DH36 | EH36 |
|---|---|---|---|---|---|---|---|
| Carbon (C) | ≤ 0.21% | ≤ 0.21% | ≤ 0.21% | ≤ 0.18% | ≤ 0.18% | ≤ 0.18% | ≤ 0.18% |
| Manganese (Mn) | 2.5 x C min. | 2.5 x C min. | 0.60-0.90% | 0.70-1.00% | 0.90-1.60% | 0.90-1.60% | 0.90-1.60% |
| Silicon (Si) | ≤ 0.50% | ≤ 0.35% | ≤ 0.35% | ≤ 0.35% | ≤ 0.50% | ≤ 0.50% | ≤ 0.50% |
| Phosphorus (P) | ≤ 0.035% | ≤ 0.035% | ≤ 0.035% | ≤ 0.035% | ≤ 0.035% | ≤ 0.035% | ≤ 0.035% |
| Sulfur (S) | ≤ 0.035% | ≤ 0.035% | ≤ 0.035% | ≤ 0.035% | ≤ 0.035% | ≤ 0.035% | ≤ 0.035% |
| Nickel (Ni) | – | – | – | – | – | – | – |
| Chromium (Cr) | – | – | – | – | – | – | – |
| Molybdenum (Mo) | – | – | – | – | – | – | – |
| Copper (Cu) | ≤ 0.35% | ≤ 0.35% | ≤ 0.35% | ≤ 0.35% | ≤ 0.35% | ≤ 0.35% | ≤ 0.35% |
Mechanical Properties for Ship Building Steel Plates
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Impact Energy (J) at -20°C |
|---|---|---|---|---|
| Grade A | ≥ 235 | 400 – 520 | ≥ 22 | – |
| Grade B | ≥ 235 | 400 – 520 | ≥ 22 | – |
| Grade D | ≥ 235 | 400 – 520 | ≥ 22 | ≥ 27 |
| Grade E | ≥ 235 | 400 – 520 | ≥ 22 | ≥ 27 |
| AH36 | ≥ 355 | 490 – 620 | ≥ 21 | ≥ 34 |
| DH36 | ≥ 355 | 490 – 620 | ≥ 21 | ≥ 34 |
| EH36 | ≥ 355 | 490 – 620 | ≥ 21 | ≥ 34 |
Shipbuilding Steel Plates Dimensions
| Dimension | Range |
|---|---|
| Thickness | 6mm to 100mm |
| Width | 1500mm to 4000mm |
| Length | 6000mm to 12000mm |
Shipbuilding Steel Plate Sizes
| Plate Thickness (mm) | Width (mm) | Length (mm) |
| 5 | 1,500 | 6,000 |
| 6 | 1,500 | 6,000 |
| 8 | 1,500 | 6,000 |
| 10 | 1,500 | 6,000 |
| 12 | 1,500 | 6,000 |
| 15 | 1,500 | 6,000 |
| 20 | 2,000 | 6,000 |
| 25 | 2,000 | 6,000 |
| 30 | 2,000 | 6,000 |
| 40 | 2,000 | 6,000 |
| 50 | 2,000 | 6,000 |
Fabrication and Welding
- Weldability: Shipbuilding steel plates are designed to be easily weldable. They often come with specifications for preheating and post-weld heat treatment to avoid weld cracking.
- Processing: Plates are often processed by cutting, bending, and forming to fit specific design requirements.
Conclusion
Emirerri Steel’s Ship Building Steel is your go-to choice for constructing robust, durable, and reliable marine vessels. With our commitment to quality and innovation, we ensure that your ships are built to withstand the toughest challenges of the sea.