Protect Your Valuables with the Strongest Security Chain

Protect your items from theft with a case-hardened security chain and a high-quality lock.

What is Pewag Security Chain, how can you use it, and what sizes are available?

Have you had any of your valuables stolen, or felt nervous that someone might steal them? Have you had a chain that someone was able to cut loose? Do you need a stronger chain to secure your valuables? Better yet, do you want to feel secure knowing your items will be safe? Consider looking into a Pewag Security Chain.

hardened security chain pewag
Pewag 9/32″ Square Hardened Security Chain

A Resistant, Bolt Cutter Proof Chain

Protect your items from theft with a case-hardened security chain and a high-quality lock that comes with two security keys. We carry Pewag Security Chains that are considered to be the toughest security chains out there. By being the toughest chain, we mean the Pewag chain is the hardest chain to cut with bolt cutters. The biggest reason is the hardened steel chain is squared, so it will not allow bolt cutters to cut through it.

strongest security chain

With the chain link’s squared shape and impressive chain hardness of 63 HRC, this is a bolt cutter resistant chain that requires tremendous effort to cut, unlike standard round chains. This can get rid of the thief or even help catch the person who is attempting to steal and damage your item.

What Can I use a Pewag Security Chain for?

This type of specialized chain is very beneficial and recommended for people who do not want their items stolen or damaged. For example, you can use the Pewag security chain as a bike chain lock or a motorcycle chain lock. You can also use for larger items such as boats, vehicles, trailers, gates, and properties. The use is not limited, as long as you get the appropriate chain width and length for your application, you can use on anything you feel is worth protecting against thieves.

Sizes of Security Chains

We carry three sizes of Pewag security chain and they are mostly used for commercial and industrial applications. More specifically, the 9/32″ Security Chain is designed for securing smaller items like bikes and mopeds. The 3/8″ Security Chain and 1/2″ Security Chain are used to protect more industrial items and facilities. Keep in mind that the 1/2″ x 2′ Chain is the largest size Pewag produces and is designed to protect large valuable items and facilities.

Along with the hardened steel chains are chain locks that work with Pewag Security Chain for maximum security. We carry the Viro Panzer Lock For 9/32″ Security Chain, Viro Panzer Lock For 3/8″ Security Chain, and Viro Monolith Lock For 1/2″ Security Chain. The heavy-duty chain lock is a unique design that does not allow any tools to cut open the lock. These locks also come with top security profile nickel-plated brass keys for only you to unlock.

These chains can be sold by the foot. If you would like a complete setup, then check out the security chain packages that include the chains, locks, and keys.

If you lose your keys or need to duplicate them, then make sure to keep the included card that comes with the key code.

Want to learn more about Chains?

Check out this short video to get a better visual of what Pewag chains look like!

source: pewag

If you are ready to add an uncuttable chain and lock to your valuables, then head over to the chain section of the USCC website or give our sales team a call at 800-404-7068.

Chain Grades: Comparing Grade 30, Grade 43, Grade 70, Grade 80, Grade 100, and Grade 120 Chain

We turned one our most popular posts, “What are the Differences Between Grade 70 Chain, Grade 80 Chain, Grade 100 Chain, and Grade 120 Chain?”, into a simple chart for quick and easy chain grade comparison.

We also added information on the Grade 30 chain and Grade 43 chain. While we don’t sell these chain grades on our website, you can always call in to order them.

chain grade information

Typical Chain Uses

Grade 30

General purpose economical chain. Used in a variety of industries and jobs including light construction, agricultural applications, and the marine industry.

Grade 43

Typically used for container securement, logging, farming, towing, marine applications, and as general purpose utility chain.

Grade 70

Made from a higher strength, heat-treated carbon steel that has a load rating approximately 20 percent higher than Grade 43. The gold chromate finish makes it easy for DOT officials to recognize. Typically used by truckers, loggers, and highway crews for load securement and towing.

Grade 80

A high strength, heat treated alloy chain that can be used as a sling component for overhead lifting as well as heavy duty tow chain. The most economical choice that is suitable for overhead lifting.

Grade 100

A high strength, heat treated alloy chain. Primarily used as a sling component for overhead lifting.  Has approximately 25 percent higher strength than Grade 80. Popular in construction, manufacturing, and rigging applications.

Grade 120

An ultra-premium high strength chain designed specifically for the rigorous requirements of overhead lifting applications. The links have a unique square shape and it has approximately 50 percent higher strength compared to Grade 80. There are currently no official standards for Grade 120 chain in the U.S. or Europe, however, it does meet or exceed the standards of Grade 100 chain.

chain working load limits

Safety Standards for Chain

Organizations like ASTM (American Society of Testing & Materials), ASME (American Society of Mechanical Engineers), and OSHA (Occupational Safety & Health Administration) have released safety standards and regulations for various materials and grades of a chain.  

Essentially, it’s a formal way of recognizing and documenting that not all chain is created equally and therefore, it should not all be used for the same applications. 

ASTM Chain Specification 

What does A413, A391, and A973 all mean? Those are simply how the ASTM categorizes and references their specification standards. Each specification outlines the different manufacturing and testing requirements as well as the appropriate performance standards, grades, and applications.  

Determining Chain Grades

Chain grades are a standard method for showing the ultimate breaking strength (tensile strength) of a chain. Grades help determine what sort of applications are appropriate for a given chain. 

Chain grades are determined by calculating newtons per square millimeter, using the formula “N/mm2”.

Where “mm” is the area of the two cross-sections of a single chain link, and “N” is newtons. A newton is approximately 0.224805 lbs. 

So, to determine a chain grade, manufacturers must find the ultimate breaking strength. Then, divide that number by .224805 to determine ultimate breaking strength in newtons. Next, take that number and divide by the total area of two cross-sections of a single link. That number is the chain grade. 

You could reverse this formula to determine ultimate breaking strength if all you know if the chain grade.  

Note: chain grades advertised by manufacturers are one-tenth of the actual mathematical grades. So grade 80 is really 800, and grade 120 is 1,200. 

Determining Chain Working Load Limits

Working load limit (WLL) of a chain is another designated safety measure. WLL is a weight significantly less than the weight that would cause a chain to fail (tensile strength).

WLL = MBL / SF. Where MBL is minimum breaking load and SF is the safety factor.  

A safety factor is the ratio between allowable stress and actual stress. In other words, it’s the ratio between the chain strength and the expected maximum stress.

In lifting and rigging applications, factors such as gravity and the additional force caused by angles must be considered.  

Always adhere to the WLL to ensure a chain does not break or wear quicker than it should.  

Temperature Ratings for Chain Slings

David Urlaub, Rigging & Lifting Specialist
David Urlaub, Rigging & Lifting Specialist

Although extremely strong, chain can still be negatively affected when exposed to temperature extremes. The acceptable temperature range will vary depending on the grade of the chain and will also vary in reduction of Working Load Limit (WLL).Adjustable-4-Leg-Chain-Sling-Common_1_375

See the chart below from the American Society of Mechanical Engineers (ASME) regarding standard B30.9-2014  and reduction in WLLs; both temporary (while heated) and permanent (after cooled) temperatures are included. Keep in mind that the effects are cumulative over time. This means that each time the sling is heated to an excessive temperature, its WLL will be further reduced.

These effects are cumulative, so each time that same chain sling is heated to the excessive temperature, its working load limit will be reduced by an additional percentage.

new chart

Please note that the Occupational Safety and Health Administration (OSHA) requires all slings exposed to temperatures over 1000º F to be removed from service.

When slings are exposed to extreme temperatures, contact the sling manufacturer for instruction.

Questions? Call us at 866-878-9355. We’ll be happy to help.

-David

 

New Products: Grade 120 Chain

PewagChain-by-the-foot_1
Grade 120 chain by the foot

If you’re looking for the best lifting chains and bulk chain in the industry, look no further than grade 120 chain.

120 grade chain is a new generation of high performance chain. With working load limits 50% higher than traditional grade 80 chain, and 20% stronger than grade 100 chain, it’s ideal for any application requiring superior strength.

The higher levels of strength also allows for significant reduction in overall chain weight, an excellent benefit for lifting applications.

The added strength comes from the chain’s square link design, which provides higher wear resistance. Because there’s increased contact between the links’ bearing surfaces, pressure is reduced on the chain, which reduces overall wear and encourages a longer working life.

Grade 120 connecting link
Grade 120 connecting link

This square profile also offers up to 38% higher moment of resistance in comparison to traditional round links in the same diameter. This translates into the chain being able to withstand bending forces- making it the superior chain for heavy duty jobs.

In comparing chain with the same dimension and workload, grade 120 alloy offers a design factor of 6:1 compared to G80 with 4:1.

120 grade chain is manufactured with a powder coat finish for corrosion protection. The bright blue color also makes it easily identifiable.

Grade 120 Eye Self Locking Hooks
Grade 120 Eye Self Locking Hooks

Our grade 120 chain comes from the experts at pewag, the leaders in chain technology and manufacturing since its first documented forging plan in Austria in 1479. pewag’s North American distribution company and service center was founded in 1975.

We’re pleased to carry grade 120 chain in four sizes: 9/32″, 5/16″, 3/8″, and 1/2″, all in full drum sizes of cut lengths by the foot. Grade 120 fittings are also available. Shop the full selection here: Grade 120 chain.

Working Load Limits of Chain

Grade 70 transport chain from US Cargo ControlWhether you transport machinery, use tow chains, or are in the logging industry, it’s important to know the working load limits of chain you are using. Chains have a working load limit- or WLL- of approximately one third of their break strengths (the amount of force the chains can withstand before they break).

How to determine a chain’s working load limit

The WLL of a chain is determined by both the grade and the diameter. Chain is embossed with both the grade and size so you can determine its WLL using this chart.

new chart

 

Types of chain

Grade 30 Chain

Grade 30 is a multipurpose, economical chain. Also known as Grade 30 Proof Coil Chain, it’s used in a variety of industries and jobs, including light construction, barrier chains, and in the marine industry. It is not safe for overhead lifting. Grade 30 chain is embossed using a 3, 30, or 300.

Grade 43 Chain

Also called Grade 43 High Test Chain  or Grade 43 Tow Chain, this is common in the towing and logging industries. It is not rated safe for overhead lifting. Grade 43 chain is embossed using a 43 or a G4.shutterstock_2337463

Grade 70 Chain

Grade 70 Transport Chain is also called Grade 70 Truckers Chain as it’s common in securing loads for over-the-road hauling. It is not rated safe for overhead lifting. Grade 70 chain is embossed using a 7, 70, or 700.

Grade 80 Chain

Grade 80 Alloy Chain is heat-treated making it safe and rated for overhead lifting. It’s also commonly used as a heavy duty tow chain. Grade 80 chain is embossed using an 8, 80, or 800.

Grade 100 Chain

Considered premium quality chain, it offers about a 25% higher work load limit over Grade 80 chain. It is safe for overhead lifting. Grade 100 chains are embossed with a 10 or 100.

Grade 120 Chain

A newer product in the market, Grade 120 chain is up to 50% stronger than Grade 80 chain and 20% stronger than Grade 100 chain. It’s also more resistant to abrasion than both Grade 80 and Grade 100 chains. It’s safe  for overhead lifts.

LEARN MORE: 

Learn more about the differences between grades 70, 80 and 100 here: What are the Differences Between Grade 70 Chain, Grade 80 Chain, and Grade 100 Chain?

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