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Marine anchor chains can be classified from four aspects:
The material used in ship anchor chain is an important consideration. Common materials include carbon steel, alloy steel, or stainless steel anchor chain. The choice of material depends on factors such as strength, corrosion resistance, and weight requirements. Stainless steel, for example, offers excellent corrosion resistance, making ship anchor chain suitable for marine environments where exposure to seawater is prevalent.
One common classification of anchor chain is based on the presence or absence of studs.
Ship anchor chain serves different purposes based on their design and intended use. Marine anchor chains are specifically designed for anchoring vessels, ensuring secure and reliable mooring. Mooring chains, on the other hand, are used for various mooring applications, providing sturdy connections between ships and docks or buoys. Stud link chains are commonly used in heavy-duty applications that require high strength and durability.
Steel grade classification is essential for ship anchor chains. It determines the strength and load-bearing capacity of the chains. Anchor chains are classified into different steel grades such as AM1, AM2, and AM3, indicating their specific properties and compliance with industry standards. Mooring chains have their own classification system, including R3, R3s, R4, R4s, and R5, which further specify their strength and suitability for different applications.
Marine stud chain is a robust and reliable chain used for anchoring large ship and offshore structures. It features interlocking stud connections, ensuring secure and strong links. Made from high-strength steel, it has excellent tensile strength to withstand heavy loads. The chain is often treated with protective coatings or galvanized to enhance corrosion resistance. It comes in standardized sizes and undergoes rigorous certification by classification societies. Markings provide important information for identification and traceability. Marine stud chain is primarily used for anchoring ships, floating structures, and offshore platforms, providing stability and preventing drift. With its durable construction, high tensile strength, and adherence to industry standards, it is an essential component for safe and efficient anchoring operations.
| Grade | Yield Strergth (N/mm2, min) | Tensile Strength (N/mm2, min) | Elongation (%, min) | Reduction Of Area (%, min) | V-notch impact test Temperature | V-notch impact test Impact |
|---|---|---|---|---|---|---|
| 2 | >295 | 490~690 | >22 | – | 0 | >27 |
| 3 | >410 | >690 | >17 | >40 | 0 | >50(weld) |
| 4 | >490 | >770 | >12 | >50 | -20 | >45, >33(weld) |
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