How Industrial Chains Support Heavy Duty Applications

Industrial chains are the backbone of heavy-duty work on Australian operations. They keep loads secure, lifting operations running, and work sites compliant.

However, not every chain suits every job. And specifying the wrong grade or configuration puts your team and your load at risk. Our team at www.rud.com.au has spent over 40 years supplying industrial chains Australia-wide. So we know exactly where teams run into trouble when selecting chain products for demanding applications.

This guide covers chain types, grades, load ratings, and what Australian Standards actually require on-site. By the end, you’ll have a clear picture of what to specify and why.

What Are Industrial Chains and How Do They Hold Up?

Industrial chains are load-rated steel links, and they show up commonly across mining, construction, manufacturing, and heavy transport. Each link carries a portion of the total weight, so the grade and size of those links set the safe load capacity. 

The chain type you specify also needs to match your actual site conditions. After all, a chain used in a coal mine near Queensland faces very different demands than one used in a warehouse in Sydney. So, getting the grade and construction right before you specify anything directly affects safety and site compliance.

Industrial Chains in Australia: The Most Common Types on the Job

Picking the best-fit chain type is where most purchasing decisions go wrong. There’s a solid variety of options on the market, and each one is manufactured for a specific range of conditions.

 

Here’s what you need to know about the two most common types:

Alloy Chain: What Makes It the Preferred Option

Alloy chain is designed for heavy lifting applications in mining, construction, and heavy transport, where durability and consistent performance are non-negotiable. Its high-grade steel composition gives it a strength-to-weight advantage over standard alternatives, and it resists wear in demanding site conditions far better down the track.

Lifting-grade alloy chains also go through strict load and quality benchmarks before they leave the factory. That means you’re working with a product that’s been tested to perform under pressure.

Grade 800 Chain: What the Rating Actually Means

Grade 800, sometimes written as Grade 80, tells you the chain handles 800 newtons per square millimetre of material. It sits in the mid-to-upper performance range and carries a Working Load Limit (WLL) suited to most general lifting work on-site.

For example, a Grade 800 chain can handle:

• Overhead lifting in warehouse and logistics facilities
• Load securing on heavy haulage vehicles
• Rigging in construction and civil works
• General lifting in mining and resources operations

These cover the bulk of industrial lifting scenarios you’ll run into throughout Australian sites. If you’re not sure which grade fits your application, the next section covers load ratings in full detail.

Chain Slings: How They Connect the Load to the Lift

A chain sling physically connects a suspended load to the lifting device above it. The configuration you choose determines how that load spreads, and that decision carries real consequences on-site. Rig it incorrectly, and the entire load shifts to the wrong point.

These are the main configurations you’ll come across in the field:

• Single Leg: One chain leg connects directly to the load. It suits straightforward vertical lifts where the load has a single, central pick point.
• Double Leg: Two legs spread the load across two connection points. This works well for loads that need more stability during the lift.
• Three and Four-Leg: These handle heavier, more complex loads where weight distribution among multiple points is necessary for a safe lift.

Each of these has its place on the right job. You also need to pay close attention to your sling angle, because as the angle between the legs widens, the WLL drops. 

From what we’ve seen across Australian mining and construction sites, incorrect sling angles account for a significant portion of preventable lifting incidents. So getting that angle right has just as much bearing on safety as the sling rating itself.

Working Load Limit: The Number You Can’t Ignore

Every chain and sling in Australia carries a Working Load Limit (WLL) tagged directly on the product, and that number governs every lift.

The WLL is the maximum load a chain can carry under normal operating conditions. It accounts for a built-in safety factor, which means the actual breaking strength sits several times higher than the WLL figure you see on the tag.

Think about it this way. If your load weighs 2 tonnes, you don’t just need a chain rated to 2 tonnes. It still requires you to factor in the sling angle, the number of legs, and the weight distribution in the lift. 

Cutting corners on any of those can push the real load well beyond what the chain is rated to handle, and that’s when links fail, or loads drop. 

Worth Noting: Exceeding the WLL, even briefly, can cause permanent damage to the chain links. You won’t always see that damage with the naked eye, so it becomes a serious risk on any future lift.

How Australian Standards Define Chain Safety

Australian Standards provide recognised requirements for the grading, testing, and use of chain slings in Australia. For alloy chain slings specifically, AS 3775.1 and AS 3775.2 are the primary references, alongside AS 3776. These cover Working Load Limits (WLL), inspection intervals, and the conditions under which a sling needs removal from service.

In practice, every lifting chain sling must satisfy applicable requirements throughout its service life, including regular checks, maintenance, and replacement where needed. Proper storage and correct use carry the same compliance weight. 

And here’s why that counts. Lifting equipment that falls below recognised standards increases safety risks and can contribute to compliance issues under workplace health and safety laws. The standard helps establish consistent safety requirements across all areas of lifting operations and equipment management.

Choosing the Right Chain for Your Application

Now that you know how chains are rated and regulated, the next step is matching the product to your specific job and environment. This is where most people go wrong, and it usually comes down to a few key factors.

Application	Recommended Chain	Key Consideration
General lifting on-site	Grade 800 alloy chain	Check WLL against load and sling angle
Heavy haulage securing	Grade 800 alloy chain	Factor in the shock loading capacity
Coastal or chemical environments	Stainless steel chains	Corrosion resistance is the priority
Storage on racks between jobs	Any grade	Inspect for wear before reuse
High-frequency lifting operations	Grade 800 or higher	Durability under repeated load cycles

Note: The table above only covers the most common scenarios. 

Your specific job may involve a variety of factors that don’t fit neatly into a single row. If you’re not sure which product suits your application, we’d recommend checking with a qualified supplier before you specify anything.

While you’re at it, check the fittings too. Hooks, master links, and connectors all need to match the grade and WLL of the chain they’re attached to. A mismatched fitting puts the entire assembly at risk, no matter how well-rated the chain is. 

RUD Australia offers a broad range of lifting slings and components, including Grade 100 and Grade 120 alloy chain systems. If you need help finding the correct product for your job, the online Sling Configurator guides you through the process in six simple steps. 

You can also contact the team directly for technical support.

Find the Right Chain for Your Operation

Choosing the suitable industrial chain comes down to more than just picking a grade off a chart. Load weight, sling configuration, site conditions, and compliance requirements all feed into that decision. Get any one of those wrong, and you’re either over-specifying at unnecessary cost, or under-specifying at serious risk.

That said, you don’t need to handle all of that alone. Here are the main things to confirm before you order any chain product:

• Check the WLL against your load weight and sling angle
• Match the chain grade to your environment, whether coastal, chemical, or general industrial
• Confirm all fittings comply with the same grade as the chain itself

In short, there’s a right chain for every operation. 

And if you’d rather talk it through with someone who knows the industry, our in-house engineers are available for direct technical support. Get in touch with RUD Australia.