Understanding the Various Grades of Chain Slings
While chain slings are typically the preferred choice for situations in which a sling is needed that is capable of holding up high temperatures or other rugged conditions, it is important to ensure that you select the right chain sling for the application. Alloy chain is the material of choice when manufacturing chain slings, due to the strength it provides through its mechanical properties and chemical content. Even so, it should be understood that there are various grades of chain slings available and it is important to choose the correct grade for the relevant application.
Grade 80 chain slings are the most commonly used type of alloy chain today. This grade of chain sling is available in single, double, triple and quad legged working loads. It is also important to verify the working load limit of the chain sling. While 4 to 1 safety factor chain slings are available, when chain slings are to be used in construction in Ontario, they must carry a 5 to 1 safety factor.
Grade 100 chain slings offer a new and maximum strength grade. Four different sizes of Grade 100 chain slings are available and may be selected in conjunction with the preferred leg setting based on the maximum weight that needs to be lifted in the relevant application.
Grade 70 chain slings may be used in certain situations in which the weight limits range between about 3,000 pounds and 11,000 pounds. Various fittings, including twin clevis and truck winch fittings are available for use with Grade 70 chain slings.
In choosing chain slings, it is important to ensure that you do not use any type of chain sling, particularly for overhead lifting, until it has been verified that the sling is produced from high quality alloy steel.
The choice of the right chain sling is vital to successful overhead lifting. Understanding the types of chain slings available can ensure the correct choice.