Anchor chain

stainless steel304 stainless steel316 stainless steel

Product Overview
The stainless steel anchor chain is a chain connected between the anchor and the hull, used to transmit the anchoring force and buffer external forces on the ship. A complete anchor chain is composed of several sections connected by connecting links or connecting shackles; each section is composed of many links.

Introduction

• Material selection: stainless steel that meets AISI standard; moderate softness required.
• Chain opening: small anchor chain openings should be welded; large anchor chain openings should be matched without deviation; each small chain body should be symmetrical and spacing standard.
• Surface finish: electrolysis quality should be white, clean and bright.
• Main application scenarios: yachts, boats, etc.
• Available materials: 316, 304, 201 and other stainless steel grades can be provided.
• Corrosion resistance: several times that of ordinary anchor chains.

Inspection Notes
If the stainless steel anchor chain is not magnetic at all, it indicates austenitic structure (300 series). 400 series materials are magnetic (ferritic). Note that being non-magnetic does not necessarily mean the grade is 304 because 201 and 202 materials also exist. Typical nickel content differs between grades (e.g. ~8% Ni for 304). Spectrometer testing or chemical composition verification is used to determine exact grade.

Parameter
Chain Diameter (mm) | Proof load (KN) Grade1 / Grade2 / Grade3 | Breaking load (KN) Grade1 / Grade2 / Grade3 | Approximate mass (127.5m) Kg
6 mm | Proof (KN): 6.62 / 9.3 / - | Breaking (KN): 13.32 / 18.6 / - | Mass: 21.45
7 mm | Proof (KN): 9.02 / 12.6 / - | Breaking (KN): 18.13 / 25.2 / - | Mass: 29.15
8 mm | Proof (KN): 11.78 / 18.5 / - | Breaking (KN): 23.68 / 33 / - | Mass: 38.23
9 mm | Proof (KN): 14.9 / 20.9 / - | Breaking (KN): 29.97 / 41.8 / - | Mass: 48.4
10 mm | Proof (KN): 18.4 / 25.8 / - | Breaking (KN): 37 / 51.6 / - | Mass: 59.68
11 mm | Proof (KN): 22.6 / 31.2 / - | Breaking (KN): 44.7 / 62.4 / - | Mass: 72.33
12.5 mm | Proof (KN): 28.75 / 41.2 / - | Breaking (KN): 57.81 / 82.6 / - | Mass: 93.23
13 mm | Proof (KN): 31.1 / 44.1 / - | Breaking (KN): 62.53 / 88.2 / - | Mass: 100.93
14 mm | Proof (KN): 34.78 / 51 / - | Breaking (KN): 69.93 / 101.9 / - | Mass: 116.88
15 mm | Proof (KN): 41.4 / 58.3 / - | Breaking (KN): 83.25 / 116.6 / - | Mass: 134.2
16 mm | Proof (KN): 47.1 / 66.2 / 92.42 | Breaking (KN): 94.72 / 132.3 / 184.87 | Mass: 152.9
17.5 mm | Proof (KN): 56.35 / 78.89 / 110.55 | Breaking (KN): 113.31 / 157.78 / 221.1 | Mass: 182.88
19 mm | Proof (KN): 68.42 / 93.6 / 130.32 | Breaking (KN): 133.57 / 187.2 / 260.64 | Mass: 215.33
20.5 mm | Proof (KN): 77.33 / 108.64 / 151.7 | Breaking (KN): 155.49 / 217.27 / 303.42 | Mass: 250.8
22 mm | Proof (KN): 89.06 / 125.4 / 174.7 | Breaking (KN): 179.08 / 250.9 / 349.4 | Mass: 288.75
24 mm | Proof (KN): 105.98 / 149.9 / 207.9 | Breaking (KN): 213.25 / 298.9 / 415.8 | Mass: 343.75
26 mm | Proof (KN): 124.38 / 175.4 / 244 | Breaking (KN): 250.12 / 350.8 / 488 | Mass: 403.43
28 mm | Proof (KN): 144.26 / 203.8 / 283 | Breaking (KN): 290.08 / 406.7 / 566 | Mass: 467.5
30 mm | Proof (KN): 165.6 / 234.2 / 324.9 | Breaking (KN): 333 / 467.5 / 649.8 | Mass: 536.25
32 mm | Proof (KN): 188.42 / 265.6 / 369.6 | Breaking (KN): 378.88 / 531.2 / 739.3 | Mass: 611.05
34 mm | Proof (KN): 212.7 / 299.9 / 417.3 | Breaking (KN): 427.72 / 599.8 / 834.6 | Mass: 689.7
36 mm | Proof (KN): 238.46 / 336.1 / 467.8 | Breaking (KN): 479.52 / 672.3 / 935.7 | Mass: 733.3
38 mm | Proof (KN): 265.7 / 374.4 / 521.3 | Breaking (KN): 534.28 / 748.7 / 1012.5 | Mass: 861.58
40 mm | Proof (KN): 294.4 / 414.5 / 577.6 | Breaking (KN): 592 / 829.1 / 1155.2 | Mass: 954.8
42 mm | Proof (KN): 324.58 / 457.7 / 636.8 | Breaking (KN): 652.68 / 915.3 / 1272.6 | Mass: 1052.7
44 mm | Proof (KN): 356.22 / 502.7 / 698.9 | Breaking (KN): 716.32 / 999.6 / 1397.8 | Mass: 1155.28
46 mm | Proof (KN): 389.34 / 548.8 / 763.9 | Breaking (KN): 782.92 / 1097.6 / 1527.8 | Mass: 1262.8
48 mm | Proof (KN): 423.94 / 597.8 / 831.7 | Breaking (KN): 852.48 / 1195.6 / 1663.5 | Mass: 1375
50 mm | Proof (KN): 460 / 648.8 / 902.5 | Breaking (KN): 926.09 / 1293.6 / 1805 | Mass: 1479.88

Standards & Accessories

• Name (example accessory): Kenter Shackle.
• MOQ (example accessory): 100 Pieces.
• Package options: Steel Pallet / Wooden Crate / Bulk Packing.
• Manufacturing Standards: Manufactured from forged alloy steel in accordance with IACS Unified Requirement W18, IACS Unified Requirement A1, ISO 1704, and applicable requirements of ABS, BV, CCS, DNV, LR, NK, KR, RINA, and RS. All load-bearing components are closed-die forged, heat treated, precision machined, and dimensionally calibrated to match corresponding anchor chain grade.
• Testing Standards: chemical composition verification, forging inspection, heat treatment verification, dimensional inspection, proof load testing, tensile property verification, hardness testing, magnetic particle inspection (MPI), visual inspection, assembly verification, and permanent identification marking.
• Application Standards: suitable for connecting stud link and studless anchor chains, offshore mooring chains, commercial ship anchor cables, container vessels, bulk carriers, oil tankers, LNG carriers, offshore platforms, FPSOs, floating production systems, naval vessels, and permanent mooring installations.
• Maintenance: inspect body wear, deformation, center block wear, taper pin security, lead plug integrity, corrosion, cracks, excessive wear, and identification markings; replace damaged or worn components according to classification society inspection requirements.

Caractéristiques / spécifications techniques

• Denomination: Stainless steel anchor chain.
• Materials available: 316, 304, 201 (stainless steel grades).
• Chain types: bolted column chain and non-bolted column chain. Bolted column chains have ~20% higher tensile strength and lower deformation; boltless typically used on small boats.
• Surface finish: electrolytic polish — white, clean, bright.
• Typical applications: yachts, boats, offshore mooring, commercial and naval vessels.
• Corrosion resistance: multiple times greater than ordinary anchor chains (stainless steel).
• Manufacturing & testing standards: IACS W18, IACS A1, ISO 1704, ABS, BV, CCS, DNV, LR, NK, KR, RINA, RS; includes proof load and tensile testing, MPI, hardness testing, and chemical composition verification.
• Packaging options: Steel pallet, wooden crate, or bulk packing.