What is a Grade 8 lifting chain?

Grade 8 chains and fittings are made of alloy steel of the highest quality, exceeding the minimum characteristics prescribed by the standards.

What must you never do with a grade 8 lifting chain?

Hackett Grade 8 Chain Slings should not be in or near acidic or caustic solutions due to the risk of hydrogen embrittlement. Chain is designed to support a load in a straight line. Never tie knots in the chain and always make sure chain is free from twists before putting it under tension.

What grade of chain is used for lifting?

Grade 80 chain is recommended by OSHA for overhead lifting applications and is most commonly used in sling assemblies. Other regulations can be found in ASTM A391 – Standard Specification for Grade 80 Alloy Steel Chain. In the majority of cases, either Grade 80 or Grade 100 chain can be used for a lifting application.

How much can 8mm chain lift?

8mm chain = from 2 tonne (2000kg) to 4.2 tonnes (4200kg).

What are the different types of lifting chains?

Alloy Chain Grade 80 or Grade 100 should be used for overhead lifting.

How do I tell what grade my chain is?

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! The “L” represents Laclede and our commitment to high quality chain products.

What are the different grades of chains?

There are five main grades of chain: 30, 43, 70, 80, and 100. Grade 120 is a newer product available for extremely heavy-duty applications, but it is less common. Each number is the maximum stress that the chain can take per millimeter squared.

What is a rated chain?

A chain grade's number or rating refers to the maximum stress it can handle per millimeter squared. If you were to make it a mathematical equation, it would look similar to the following: Chain Grade = Maximum Tensile Force (Newtons)/Link Cross-Sectional Area (millimeters)².

What is the minimum diameter of grade 80 chain for load lifting?

Grade 8 / 80 Lifting Chain - Chain Diameter 7mm to 32mm, WLL 1500kg to 31,500kg.

What is grade 70 chain used for?

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.

What is grade 80 chain used for?

With its high strength-to-weight ratio and heat-treated steel, grade 80 chain is safe for overhead lifting and rigging slings. It can also be used for recovery, safety, and towing chains. In recent years, grade 80 chains have become more popular in the flatbed trucking industry.

What is grade 43 chain used for?

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

How often should lifting chains be replaced?

It is essential that you get all machinery serviced regularly, which will be an important factor in deciding how often to replace lifting slings. The frequency of services will depend on the type of lifting equipment you have, but usually they will be required every 6-12 months.

What is the maximum allowable wear for a load chain?

(c) Check each chain link for excessive wear, twisted or bent links, cuts, nicks, or gouges, and stretched links. If wear exceeds 15 percent of the original diameter of the link, the chain should be removed from service. A 5 percent stretch on any link should be considered the maximum allowable.

Can grade 80 chain be used for transport?

Grade 80 Chain

Grade 80, a heat-treated steel chain, differs from Grade 70 in that it's known for its excellent strength to weight ratio; therefore, it can be safely used for overhead lifting. Additionally, it can be used as a towing, safety, and recovery chain.

What is the breaking strength of a grade 70 chain?

Example: Grade 70 chain is rated at 700 Newton per millimeter squared (101,526 Pound-force per square inch) while Grade 80 is rated at 800 Newton per millimeter squared )116,030 Pound-force per square inch). Grade 70 chains, also known as transport chain or trucker's chain, are designed as load securement.

How much weight can a 3/8 chain hold?

Made in the USA

Peerless 3/8" grade 100 alloy chain is quenched and tempered. Proof tested to 200% of working load limit. Meets or exceeds all existing OSHA, Government, NACM and ASTM specification requirements. This heavy duty chain has a working load limit (WLL) up to 8,800 lbs.

How do you determine 80 grade chain?

Grade 80 chain will typically have either an 8 or 80 embossed into one of the links, Grade 70 a 7 or 70, and so on. Always check the chain grade and size and use the appropriate chain for the job. And remember, only grade 80 alloy or higher chain is approved for overhead lifting.

Can grade 70 chain be used for towing?

Often coated in yellow chromate for an instantly recognizable bright gold appearance, chain grade 70 is the strongest carbon steel chain on the market as far as common chain grades go. It is used most commonly in trucking applications like tying down heavy loads or towing.

Can Grade 120 chain be used for transport?

Grade 120 Transport Chain

The patented square link design of grade 120 chain also outperforms lesser grades of chain in fatigue and bending resistance, making it an excellent choice for many heavy-duty tie down applications.

Is there a chain that Cannot be cut?

The Best Chain Has Hexagonal or Square Links

A heavy-duty, hardened steel chain with hexagonal links thwarts nearly every thief with a bolt cutter. Hexagonal links (or square or trapezoidal) make it impossible for bolt cutters to get a grip.

Can you weld grade 80 chain?

First, all grade 70, 80 and 100 chain is heat treated. If you heat the steel above 900F or so, you're taking quite a bit of the strength out of the steel in the chain link unless you re-quench and re-temper the steel. Since it would be welded to a larger chunk of steel, that's basically impossible to accomplish.