What are the Differences Between Grade 70 Chain, Grade 80 Chain, Grade 100 Chain, and Grade 120 Chain?

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A common question our sales team hears from customers is “What are the differences between grade 70 chain, grade 80 chain, grade 100 chain, and grade 120 chain?”

Grade 70 chain

image of grade 70 transport chain / truckers chain from US Cargo Control

Grade 70 is transport chain manufactured in heat-treated carbon steel. As the name suggests, it’s used as tie downs on over-the-road trailers so it’s also known as truckers chain. It’s never to be used for overhead lifting. Grade 70 chain generally features a gold chromate finish so it’s easy to recognize and to meet California Highway Patrol and DOT requirements. In addition to transport uses, it’s also commonly used in towing, logging, oil rigs, and safety chain applications.

Grade 70 chain is embossed with 7, 70, or 700.

 

Grade 80 chain

Grade 80 chain is a heat-treated steel chain with a high strength to weight ratio. Its strength makes it safe for overhead lifting and lifting slings. It’s also excellent for uses such as recovery, safety, and towing chains. Grade 80 chain is also becoming more common in the flatbed trucking industry to secure heavy duty industrial loads. Because these types of chains are generally equipped with a specific type of clevis grab hook, Grade 80 tie down chain is not approved for overhead lifting.

Grade 80 alloy chain is embossed with 8, 80, or 800.

 

Grade 100 chain

Grade 100 chain is a newer product and is becoming increasingly popular as a replacement for grade 80 chain. Considered premium quality by chain manufacturers, it provides about 25% higher work load limits than grade 80 chain and is approved for overhead lifting applications. Due to the added strength of grade 100 chain over grade 80 chain, it’s becoming more widely used to secure flatbed loads since a smaller-sized chain can be used without sacrificing working load limit capacities. However, because these chains are generally equipped with a specific type of clevis grab hook, Grade 100 tie down chain is not approved for overhead lifting.

Grade 100 alloy chain is embossed with 10, 100, or 1000.

 

Grade 120 chain

Grade 120 chainimage of grade 120 chain from US Cargo Control is also a newer category of high performance chain, offering the highest strength in the industry. The square link style creates increased contact between the bearing surfaces on the links, which reduces pressure on the chain. This translates to work load limits that are 50% higher than grade 80 chain, and 20% higher than grade 100 chain. Chain grade 120 is approved for overhead lifting. It’s important to note that as with Grade 80 tie down chain and Grade 100 tie down chain, Grade 120 tie down chain is also not safe for overhead lifting due to the type of hooks used.

Grade 120 chains have a bright blue finish to make them easily recognizable.

 

 

 

Regardless of the type of chain, all must adhere to standards set by the National Association of Chain Manufacturers (NACM), which include:

• Chain lifted loads should never to be transported or suspended over people.

• All chains should be periodically inspected for cracks, gouges, wear, elongation, nicks, and suitability.

• Excessive temperatures or exposure to chemically active environments such as acids or corrosive liquids or fumes can reduce a chain’s performance.

• If chains are to be used outside the recommended temperature range ( -40 °F to 400 °F), the user should first consult the chain’s manufacturer.

• If the thickness at any location on the link is less than the listed minimum value, all chain should be removed from service.

• When mixing chain or component types, all should be rated at the work load limit of the lowest rated component or chain.

US Cargo Control offers a full line of grade 70 transport chain, grade 80 chain, grade 100 chain, grade 120 chain, as well as chain slings.

Questions? Give our sales team a call at  866-444-9990. They will be happy to help, or place an order for you.

 

 

 

 

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4 Responses to What are the Differences Between Grade 70 Chain, Grade 80 Chain, Grade 100 Chain, and Grade 120 Chain?

  1. Steven Santos December 1, 2013 at 6:58 PM #

    Can you tell me WHY grade 70 chain is not to be used for overhead lifting?

    • Lisa December 5, 2013 at 12:16 PM #

      Hi Steven,

      Grade 70 chain is a heat-treated carbon steel which is not as strong as a grade 80 or grade 100 which are an alloy, heat-treated steel. Grade 80 and grade 100 are specifically designed for safety and approved by OSHA and other governing agencies for overhead lifting. We hope this is helpful, let us know if you have any other questions. Thanks for visiting the USCC blog!

  2. Vahoa April 15, 2014 at 6:15 AM #

    Est ce qu’il est possible de fabriquer une élingue de levage avec une chaîne de grade 100 raccordée à un anneau de grade 80?

    • Lisa April 18, 2014 at 11:38 AM #

      Thanks for your question “Is it possible to make a lifting sling with a chain grade 100 connected to a ring of grade 80?”.

      Yes, you can combine two different grades of chain in a lifting sling, but it’s important to remember that the strength rating will always be rated using the weakest component. Because the grade 80 ring is the weakest, the rating for the sling will be based on the grade 80 part.