Product Overview
Grade 80 Alloy Lifting Chain is a high-strength lifting component designed for demanding industrial applications where safety, durability, and consistent performance are critical. Manufactured from heat-treated alloy steel, G80 chain provides a higher strength-to-weight ratio compared with traditional carbon steel chains, making it widely used for chain slings, overhead lifting, construction equipment, mining operations, and heavy-duty material handling.
Direct factory manufacturer of high-strength Grade 80 alloy lifting chains engineered for overhead lifting, chain slings, construction equipment, and heavy-duty rigging applications. Fully heat-treated, 100% proof-tested, and supplied with EN 10204 3.1 Mill Test Certificates.
Key Advantages
Controlled Alloy Composition (20Mn2 / 20CrMnTi): Manufactured from high-tensile alloy steel with balanced carbon and manganese ratios to ensure maximum strength and fatigue resistance under shock loads.
Automated Continuous Heat Treatment: Advanced quenching and tempering production lines eliminate hydrogen embrittlement and internal structural defects, maintaining a uniform hardness-to-toughness balance.
100% Proof Load Tested: Every single meter of chain undergoes proof loading at 2.5 times the Working Load Limit (WLL) before passing through final visual and dimensional inspection.
Permanent Embossed Traceability: Stamped with "G80" and batch identification numbers every meter for clear job-site compliance and long-term quality tracking.
Technical Specifications
|
Nominal Size (mm) |
Working Load Limit (WLL, Tonnes) |
Proof Load (kN) |
Min. Breaking Load (MBL, kN) |
Inside Length / Pitch (mm) |
Outside Width Max (mm) |
Approx. Weight (kg/m) |
|
6 mm |
1.12 |
28.3 |
45.2 |
18.0 |
22.2 |
0.80 |
|
8 mm |
2.00 |
50.3 |
80.4 |
24.0 |
29.6 |
1.40 |
|
10 mm |
3.15 |
78.5 |
126.0 |
30.0 |
37.0 |
2.20 |
|
13 mm |
5.30 |
133.0 |
212.0 |
39.0 |
48.1 |
3.80 |
|
16 mm |
8.00 |
201.0 |
322.0 |
48.0 |
59.2 |
5.70 |
|
20 mm |
12.50 |
314.0 |
503.0 |
60.0 |
74.0 |
9.00 |
|
22 mm |
15.00 |
377.0 |
603.0 |
66.0 |
81.4 |
11.00 |
|
26 mm |
21.20 |
530.0 |
848.0 |
78.0 |
96.2 |
15.20 |
|
32 mm |
31.50 |
804.0 |
1290.0 |
96.0 |
118.0 |
23.00 |
Material Metallurgy & Function Analysis
|
Chemical Element |
Target Ratio Control |
Engineering Function |
|
Carbon (C) |
Optimized Core Range |
Provides precise core hardness and high tensile yield strength |
|
Manganese (Mn) |
Alloyed Addition |
Enhances toughness and reduces cracking risk under low-temperature impacts |
|
Chromium (Cr) & Nickel (Ni) |
Controlled Micro-Alloy |
Improves hardenability depth across larger link diameters (16mm - 32mm) |
|
Molybdenum (Mo) |
Precise Trace Element |
Retains high mechanical performance under cyclic fatigue and heavy loading |
Quality Control & Compliance Documentation
EN 10204 3.1 Mill Test Certificate (MTC): Verifying chemical composition and mechanical test properties.
Proof Load & Breaking Strain Reports: Actual curve diagrams showing tensile strength, yield point, and elongation percentage.
Dimensional Protocol Inspection: Verifying pitch uniformity to guarantee seamless pairing with connecting links, master links, and clevis hooks.
Third-Party Inspection: Support for SGS, TÜV, Intertek, or Lloyd's Register inspections prior to container loading.
Surface Treatment & Customization Services
Surface Finishes: Black Oxide finish, Electro-Galvanized, Yellow Zinc Plated, Hot-Dip Galvanized, or Custom Powder Coating.
Pre-Assembled Slings: We supply ready-to-use 1-Leg, 2-Leg, 3-Leg, and 4-Leg G80 chain sling assemblies with matching hooks, shortening clutches, and master links.
Packaging Solutions: Heavy-duty steel drums (200kg to 500kg per drum), reinforced wooden cases, or customized export euro-pallets with moisture-proof wrapping.
FAQ
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