The Black Anchor Chain is a durable, corrosion-resistant chain used primarily in marine applications. It is designed to secure vessels by connecting the anchor to the ship, ensuring stability in harsh conditions. These chains are typically made from high-strength steel and coated for enhanced longevity.

Size: 12mm to 200mm diameter

Grade: Grade 2, Grade 3, U2, U3, R3, R4, R5 (per ISO 1704 or DIN 766)

Viscosity: Not applicable (solid metal construction)

Buoyancy: Negative (sinks in water due to high-density steel)

Material: High-tensile carbon steel or alloy steel (galvanized or ungalvanized)

Breaking Load: Varies by size and grade (e.g., 12mm Grade 3: ~47 kN, 100mm R4: ~12,500 kN)

Proof Load: Typically 50-70% of breaking load

Surface Treatment: Hot-dip galvanized, painted, or bare metal

Length per Shot: Standard 27.5 meters (15 fathoms)

Weight per Meter: Depends on size (e.g., 20mm: ~3.5 kg/m, 100mm: ~150 kg/m)

Certification: Class-approved (ABS, LR, DNV, etc.) for marine use