Grade 80 chain
Grade 80 Chain
Product Overview
Our Grade 80 chain is a premium high-tensile alloy steel chain engineered for demanding lifting and rigging applications in industrial environments worldwide. Designed to meet the rigorous standards of international safety regulations, this Grade 80 chain offers exceptional strength-to-weight ratios, making it the preferred choice for heavy-duty operations where reliability is paramount. With a minimum breaking strength of four times its working load limit (WLL), the Grade 80 chain ensures superior safety margins compared to lower-grade alternatives.
Manufactured through advanced quenching and tempering processes, our Grade 80 chain features a uniform heat treatment that enhances its durability and resistance to wear, abrasion, and shock loading. The signature yellow chromate coating provides excellent corrosion resistance, ideal for use in harsh conditions such as marine, construction, and mining sites. Available in a wide range of sizes from 6mm to 26mm, this versatile Grade 80 chain is fully compliant with EN 818-2, ASME B30.9, and other global standards, guaranteeing traceability and quality assurance for B2B buyers seeking dependable supply chain solutions.
In the competitive landscape of international trade, selecting the right Grade 80 chain can significantly impact operational efficiency and worker safety. Our product undergoes stringent non-destructive testing, including magnetic particle inspection, to eliminate defects and deliver consistent performance. Whether you're outfitting overhead cranes, manufacturing lifting slings, or securing cargo in logistics, the Grade 80 chain stands out for its balance of power, flexibility, and longevity.
Key Features
- High Tensile Strength: Rated at Grade 80, with a breaking force up to 800kN in larger sizes, providing unmatched load-bearing capacity.
- Corrosion-Resistant Finish: Yellow zinc chromate plating offers superior protection against rust and environmental degradation, extending service life in wet or chemical-exposed environments.
- Optimized Link Design: Precision-welded links with smooth contours minimize stress concentrations and facilitate easy handling and inspection.
- Heat-Treated Alloy Steel: Quenched and tempered construction delivers excellent toughness, fatigue resistance, and impact absorption.
- Color-Coded Identification: Distinct blue enamel marking on each link for quick visual recognition, ensuring compliance with OSHA and EU Machinery Directive requirements.
- Full Traceability: Each batch is marked with heat numbers and test certificates, supporting complete supply chain accountability.
- Customizable Options: Available in short link (G80 SL), long link, and transport chain variants to suit specific rigging needs.
Technical Specifications
| Chain Size (mm) | Working Load Limit (WLL) tonnes | Minimum Breaking Force (kN) | Weight per Meter (kg/m) | Inside Length (mm) | Inside Width (mm) |
|---|---|---|---|---|---|
| 6 | 0.98 | 39.2 | 0.79 | 18.2 | 7 |
| 7 | 1.50 | 60.3 | 1.10 | 21.2 | 8.1 |
| 8 | 2.00 | 80.4 | 1.40 | 24 | 9.2 |
| 10 | 3.15 | 126.3 | 2.20 | 30 | 11.5 |
| 13 | 5.30 | 212.4 | 3.70 | 39 | 15 |
| 16 | 8.00 | 320.4 | 5.70 | 48 | 18.4 |
| 20 | 12.50 | 500.0 | 8.90 | 60 | 23 |
| 22 | 15.00 | 600.0 | 10.80 | 66 | 25.4 |
| 26 | 21.20 | 848.0 | 14.90 | 78 | 30 |
Note: Specifications are based on EN 818-2 standards. Always refer to the latest test certificates for precise values. WLL values are for single-leg vertical lifts; derate for multi-leg or angled configurations.
Application Scenarios
The Grade 80 chain excels in a variety of heavy industrial applications, where its high strength and reliability are critical. In construction and infrastructure projects, it is widely used in tower crane slings, concrete bucket suspensions, and formwork hoists, handling loads up to 21 tonnes safely and efficiently.
For manufacturing and warehousing, the Grade 80 chain forms the backbone of overhead traveling cranes, electric hoists, and monorail systems, enabling precise load manipulation in automotive assembly lines, steel fabrication plants, and logistics hubs. Its flexibility allows for custom sling assemblies tailored to irregular shapes, reducing downtime and enhancing productivity.
In marine and offshore operations, the corrosion-resistant properties of our Grade 80 chain make it ideal for shipbuilding, dockside rigging, and oil platform maintenance, where exposure to saltwater and harsh weather demands unwavering performance. Mining and quarrying sectors rely on it for conveyor tensioning, dragline buckets, and personnel cages, withstanding abrasive materials and dynamic shocks.
Additionally, the Grade 80 chain supports specialized uses in entertainment rigging for stage equipment, military logistics for cargo nets, and agriculture for heavy machinery towing. Its versatility across these scenarios underscores why professionals in international trade turn to Grade 80 chain for mission-critical lifting solutions.
Advantages
Choosing our Grade 80 chain provides distinct advantages over Grade 70, Grade 100, or commodity chains. Firstly, its proven four-times safety factor exceeds industry minima, reducing liability risks and insurance premiums for end-users. The lightweight design—up to 20% lighter than equivalent Grade 70—lowers crane fuel consumption and operator fatigue, translating to measurable cost savings.
Durability is another key benefit: the advanced metallurgy resists elongation under repeated cycles, with fatigue life surpassing 200,000 cycles in proof-load tests. This longevity minimizes replacement frequency, offering superior ROI in high-volume operations. The yellow chromate finish outperforms powder coating in salt spray tests, lasting over 1,000 hours without red rust.
From an SEO and procurement perspective, our Grade 80 chain's compliance with multiple standards (e.g., NACM, Australian AS 2321) simplifies global sourcing, avoiding customs delays. Environmentally, its recyclability and low-maintenance needs align with sustainable practices. Ultimately, the Grade 80 chain delivers peace of mind through predictable performance, backed by independent third-party certifications.
Why Choose Us
As a leading supplier in the international trade of rigging hardware, we specialize in Grade 80 chain with over 20 years of manufacturing expertise. Our ISO 9001-certified facilities employ state-of-the-art automated welding and heat treatment lines, ensuring batch-to-batch consistency. Every meter of Grade 80 chain is proof-tested to 2.5 times WLL and visually inspected by qualified welders.
We prioritize B2B partnerships, offering volume pricing, just-in-time delivery from strategic warehouses in Europe, Asia, and North America, and customized packaging for export. Our technical support team provides sling design calculations, load charts, and training resources, empowering your operations. With a defect rate under 0.1%, our Grade 80 chain has earned trust from Fortune 500 clients in 50+ countries.
FAQ
What is the difference between Grade 80 chain and Grade 100 chain?
Grade 80 chain has a tensile strength of 800-1000 N/mm² with a 4:1 safety factor, suitable for most lifting. Grade 100 offers higher strength (1000-1300 N/mm²) but is costlier and less flexible; use Grade 80 for general-purpose reliability.
Is Grade 80 chain suitable for overhead lifting?
Yes, when used with compatible Grade 80 fittings and proper slinging techniques. Always calculate WLL based on angle and leg configuration, and inspect per manufacturer guidelines.
How do I maintain my Grade 80 chain?
Store in a dry area, avoid dragging over abrasives, and perform daily visual checks for wear, cracks, or deformation. Lubricate links periodically with penetrating oil, and retire if stretch exceeds 5% or links won't pass a gauge.
Does your Grade 80 chain come with certifications?
Absolutely. Each shipment includes mill test certificates (MTC), proof load reports, and dimensional inspections compliant with EN 818-2 and equivalent standards.
What sizes are available for immediate export?
Standard sizes from 6mm to 26mm in drums or coils up to 1000m. Custom lengths and assemblies available with lead times under 4 weeks.
Can Grade 80 chain be used in temperatures above 200°C?
Derate WLL by 25% at 200-300°C; not recommended beyond 400°C due to strength loss. For high-heat apps, consult our engineers for alternatives.