What Are the Grades of Lifting Chains?

Lifting chains are an essential component in various industries such as construction, manufacturing, and transportation. They provide a secure and reliable means of lifting heavy loads, ensuring safety and efficiency in lifting operations. However, not all lifting chains are created equal. Different grades of lifting chains are available to accommodate different weight capacities and operating conditions. In this article, we will explore the various grades of lifting chains and their applications.

Grade 30 Lifting Chains

Grade 30 lifting chains, also known as general purpose chains, are the most common type used in light-duty applications. These chains are made from low-carbon steel and are typically not heat-treated. They are suitable for lifting relatively light loads and have a working load limit (WLL) range between 800 and 3,500 lbs. Grade 30 lifting chains find their applications in home workshops, agriculture, and marine environments where heavy lifting is not required.

Grade 43 Lifting Chains

Grade 43 lifting chains, also referred to as high-test chains, are a step up from Grade 30 chains in terms of strength and load capacity. They are manufactured from medium-carbon steel and feature a higher WLL range, typically between 2,600 and 10,000 lbs. These chains undergo a heat treatment process that increases their strength and durability. Grade 43 lifting chains are commonly used in transport and tie-down applications, as well as in logging and construction industries.

Grade 70 Lifting Chains

Grade 70 lifting chains are specifically designed for demanding applications that require exceptional strength and load-bearing capacities. These chains are made from heat-treated carbon steel and are capable of withstanding heavy loads with a WLL range of 4,700 to 11,300 lbs. Due to their exceptional strength, Grade 70 lifting chains are widely used in the transportation industry for securing heavy equipment and cargo.

Grade 80 and Grade 100 Lifting Chains

Grade 80 and Grade 100 lifting chains are the strongest and most durable chains available. They are made from alloy steel and undergo an even more rigorous heat treatment process, ensuring maximum strength and toughness. Grade 80 and Grade 100 lifting chains have impressive WLL ranges between 7,100 and 35,300 lbs, making them suitable for heavy-duty lifting operations. These chains find their applications in industries such as mining, construction, and offshore operations.

It is essential to choose the appropriate grade of lifting chain for your specific lifting requirements. Selecting a chain with a lower grade than necessary can jeopardize the safety of lifting operations, while opting for a higher grade than required may result in unnecessary expenses. Consulting with a reputable lifting chain supplier can help you determine the best grade of lifting chain for your needs.

In conclusion, the grades of lifting chains determine their strength, load capacity, and suitability for different applications. From general purpose chains to heavy-duty chains, each grade offers a specific range of benefits and performance capabilities. By understanding the different grades of lifting chains and consulting an experienced supplier, you can ensure the safety and efficiency of your lifting operations. For more information, please do not hesitate to contact us.