Used anchor chains are pre-owned marine chains designed to secure vessels by connecting the anchor to the ship. These chains are typically made of high-strength steel and show signs of wear from previous use. They remain functional for mooring, towing, or as backup anchoring solutions.

Size: 12mm to 200mm diameter

Grade: Grade 2, Grade 3, U1, U2, U3, K3, K4 (common grades)

Viscosity: Not applicable (solid metal construction)

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

Material: High-tensile carbon steel, alloy steel, or galvanized steel

Length: Typically supplied in 27.5-meter (90-foot) shots

Weight: Varies by size (e.g., 12mm chain ≈ 3.5 kg/m, 100mm chain ≈ 220 kg/m)

Breaking Load: Depends on grade and size (e.g., Grade 3 20mm chain ≈ 490 kN)

Proof Load: Typically 50-70% of breaking load

Surface Treatment: Hot-dip galvanized, painted, or bare (used chains may show wear)

Certification: ABS, DNV, LR, or other class society approvals (for new chains)

Common Standards: ISO 1704, ASTM A986, DIN 766