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What are Alloy Chain Slings? Types, Grades

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peterwalker7355@gmail.com

10 月 22, 2025

On 10 月 22, 2025

A popular choice for overhead lifting applications, alloy chain slings are some of the toughest and most durable lifting slings in the material handling industry. They are often used due to their strength, abrasion resistance, and ability to conform to the shape of the loads.

Additionally, alloy chain slings are a perfect fit for more intense or extreme environments, such as in the power, manufacturing, and petroleum industries, among others.

Are you interested in learning more about alloy chain slings? We’ll walk you through the basics in this post.

Let’s dive in!

A. Types of Alloy Steel Chains

As you can imagine, alloy chain slings come in multiple shapes and sizes. Let’s take a look at a few of them.

1. Single-Leg Chain Sling

Single-leg chain slings usually have one chain length supporting the lifted load with a hook or collector ring on the upper end. They offer excellent stability and balance when used together with other 吊装设备. They can also accommodate different load sizes and are easy to operate.

2. Double-Leg Chain Sling

As the name implies, double-leg chain slings have two separate legs held together by a collector ring. They are suitable for lifting loads that need support on two corners, such as concrete slabs, skip bins, and heavy pipes.

3. Multi-Leg Chain Sling

If you’re handling loads heavier than 180,000 pounds, you may need to pick properly configured multi-leg chain slings. These slings consist of three or more chains that allow you to use multiple pickup points on your load. This, in turn, helps maintain balance and control.

A word of advice here. When using a chain sling with more than one leg, ensure the load is distributed evenly. Also, inspect all fittings and connecting devices that accompany the sling.

B. Different Grades of Alloy Chain Slings

You may have heard the terms ‘Grade 80 chain sling’ or ‘carbon chain’ thrown around without any real context. But what exactly does it mean?

The ‘grade’ of a chain represents its strength or mean stress value. Chain grades of higher grades:

Are harder and more resistant to abrasion
Have an increased strength-to-weight ratio
Have an increased Work Load Limit (WLL)

The three grades of alloy chain slings suitable for lifting and rigging projects are:

1. 80级

The Grade 80 standard for chain slings is a staple in overhead lifting, especially in industries that involve towing and recovery. It is also commonly used to secure heavy-duty loads in the flatbed trucking industry.

Most Grade 80 lifting slings are coated with a black armor protective finish to enhance their durability and service life. Moreover, the alloy mixture makes the chain lighter without compromising its durability.

2. 100级

Like the Grade 80 chain, Grade 100 is engineered for exceptional strength. The heat-treated alloy steel used in Grade 100 is approximately 25% stronger than Grade 80, making it a better fit for hoisting and overhead lifting projects. Grade 100 chains also have a slightly harder surface material, which allows for better abrasion resistance.

3. 120级

Although rarely used, Grade 120 chain slings are the undisputed champion of overhead 提升吊索, characterized by their square links (as opposed to the regular rounded links used in other chains). You can also identify Grade 120 chains by their blue, green, or bright-colored finish.

Depending on the manufacturer, Grade 120 chains have the highest strength-to-weight ratio among all three chain grades. This is because the square links used to construct Grade 120 chains create a larger cross-sectional area per chain link.

C. How to Order the Right Type of Alloy Chain Slings for Your Lifting Job

Safety is critical to any overhead lifting project. According to the CDC, struck-by accidents are the leading cause of nonfatal injuries and the second-most common cause of death among construction workers.