What is a grade 70 chain?

Asked By: Pavla Daalen | Last Updated: 9th April, 2020
Category: automotive pickup trucks
4.2/5 (87 Views . 26 Votes)
Grade 70 chain. Grade 70 chain 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 is embossed with 7, 70, or 700.

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Also asked, what is grade 70 chain used for?

Grade 70 chain, or G70, is constructed of high-strength, heat-treated carbon steel. It is used by truckers, loggers and highway crews for load securement, towing, lashing and as trawler chain.

Subsequently, question is, how can you tell a 70 grade chain? First, all of Laclede's domestic chain is stamped about every six links to help you identify the grade of chain. Just look for the “L” and then the number after it. Each number following the “L” corresponds with a grade of chain. On grade 70 this can also show that the chains are DOT approved!

Consequently, is grade 70 chain good?

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.

What is the grade of a chain?

The chain grade numbers which manufacturers use are actually one tenth of the actual grades. Therefore, our grade 80 is 800, grade 70 is 700, and so on. The grade refers to the tensile strength of the chain. This is expressed in newtons per square millimeter (a newton is approximately 0.224805 lbs).

26 Related Question Answers Found

How strong is a 3/8 chain?

Chain Strength Chart (Working Load Limit Comparisons)
Chain Size Grade 30 Proof Coil (WLL in lbs) Dimensions Prices Gr 80 Alloy (WLL in lbs) Dimensions Prices
5/8 6,900 18,100
3/4 10,600 28,300
7/8 - 34,200
1" 17,900 47,700

Can you cut grade 70 chain?

This chain is common in the US and can be identified by the term "Grade 70" and the typical gold color. The 5/16" size can BARELY be cut by 36" bolt cutters with a 180lb guy bouncing all his weight on the handle for about 20-30 seconds, including 1 or 2 chain repositions.

How much weight can a 3/8 chain hold?

Grade 80 & Grade 100 Alloy Chain
Single Leg Sling Triple & Quad Leg Sling
5/16″ 5,700 14,800
3/8″ 8,800 22,900
1/2″ 15,000 39,000
5/8″ 22,600 58,700

Is cable or chain stronger?

One link in 250 is greater than along the length of a cable. Chain is more rugged than a cable..so in rough use a chain is a better choice but for safety sake and pure strength a cable is stronger.

Can grade 70 chain be used for lifting?


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

What's the strongest chain?

Mariner chain necklaces are one of the strongest of the different types of chains. It's as strong as the curb and cable chain.

How much is a tow chain?

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What is the difference between grade 80 and grade 100 chain?

Grade 100 chain has roughly a 25% higher capacity rating when compared to a comparable size Grade 80. Lifting this load would require the rigger to use a 1/2” Grade 80 chain sling. 3/8” Grade 100 has an approximate weight of 1.5 lbs/ft and the 1/2” Grade 80 weighs about 2.5 lbs/ft.

What is proof chain?

Proof coil is a general purpose, carbon steel chain. Common uses are for binding or tie down chains, tow chains and logging. This chain comes in galvanized or self-colored and can either be sold by the drum or by the foot. It is not to be used for overhead lifting.

How much weight can a chain hold?


Welded Chain Specifications – Transport Chain (Grade 70)
Trade Size In Inches Working* Load Limit Lbs. Weight per Foot In Lbs.
1/4 3,150 .63
5/16 4,700 .93
3/8 6,600 1.41
1/2 11,300 2.40

What is g43 chain?

ACCO G43 Domestic High Test ISO Chain is a high tensile strength carbon steel anchor (windlass) chain with an ISO short link. The short link makes it more flexible and ideally suited as a windlass chain. This extra thick hot dip galvanized finish is recommended for all marine applications.

What is high test chain?

High Test – Grade 43. High test grade 43 chain is used for load binding, towing and logging. It is a higher strength carbon steel and can be purchased galvinized or self-colored. High test chain can be sold either in a drum or per foot price. It is not to be used for overhead lifting.

How strong is a chain?

It doesn't matter how strong the other 99 links are. If just one link is weak, the chain will break. The overall strength of a chain is not the strength of the strongest link, or even of the average link. The overall strength of a chain is the strength of the weakest link.

What is 30proof Chain?

Grade 30 proof coil steel chain is a light to medium duty chain used in the automotive and marine markets, security barriers, agriculture, and tow/logging. Proof Coil is available in electro-galvanized, hot galvanized or self-colored finishes.

Which grade of chain is the only acceptable type for use in chain slings?


Steel chain slings are regulated under the MIOSHA Part 49 Slings. Only alloy steel chain, grade 80 or 100 is to be used for overhead lifting.

What are lifting chains made of?

Lifting chains are used to hoist and manoeuvre items safely and efficiently. All our chains are made of high-grade steel that has been quenched and tempered for extra security. You can choose the exact lifting chain needed to meet your specific requirements.

What does not for lifting mean?

All it means is if you lift with it, the guys who made it will accept no responsibility for it breaking. Don't lift people with it, and don't lift over people with it.